22 files changed, 9051 insertions, 8711 deletions

diff --git a/src/dhcp/nm-dhcp-client-logging.h b/src/dhcp/nm-dhcp-client-logging.h
index 4e69c698..ecbf5210 100644
--- a/src/dhcp/nm-dhcp-client-logging.h
+++ b/src/dhcp/nm-dhcp-client-logging.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2016 Red Hat, Inc.
  */
@@ -9,69 +9,79 @@
 #include "nm-dhcp-client.h"
 
 static inline NMLogDomain
-_nm_dhcp_client_get_domain (NMDhcpClient *self)
+_nm_dhcp_client_get_domain(NMDhcpClient *self)
 {
-	if (self) {
-		switch (nm_dhcp_client_get_addr_family (self)) {
-		case AF_INET:
-			return LOGD_DHCP4;
-		case AF_INET6:
-			return LOGD_DHCP6;
-		default:
-			nm_assert_not_reached ();
-			break;
-		}
-	}
-	return LOGD_DHCP;
+    if (self) {
+        switch (nm_dhcp_client_get_addr_family(self)) {
+        case AF_INET:
+            return LOGD_DHCP4;
+        case AF_INET6:
+            return LOGD_DHCP6;
+        default:
+            nm_assert_not_reached();
+            break;
+        }
+    }
+    return LOGD_DHCP;
 }
 
-#define _NMLOG_PREFIX_NAME    "dhcp"
-#define _NMLOG_DOMAIN         LOGD_DHCP
-#define _NMLOG(level, ...) \
-    G_STMT_START { \
-        const NMLogLevel _level = (level); \
-        \
+#define _NMLOG_PREFIX_NAME "dhcp"
+#define _NMLOG_DOMAIN      LOGD_DHCP
+#define _NMLOG(level, ...)                                                               \
+    G_STMT_START                                                                         \
+    {                                                                                    \
+        const NMLogLevel _level = (level);                                               \
+                                                                                         \
         /* we check first for LOGD_DHCP instead of the correct domain.
          * In the worst case, we guess wrong and enter the block.
          *
          * Same for the _NMLOG_ENABLED() macro. Probably it would be more
          * expensive to determine the correct value then what we could
-         * safe. */ \
-        if (nm_logging_enabled (_level, _NMLOG_DOMAIN)) { \
-            NMDhcpClient *_self = (NMDhcpClient *) (self); \
-            const char *__ifname = _self ? nm_dhcp_client_get_iface (_self) : NULL; \
-            const NMLogDomain _domain = _nm_dhcp_client_get_domain (_self); \
-            \
-            nm_log (_level, _domain, __ifname, NULL, \
-                    "%s%s%s%s%s: " _NM_UTILS_MACRO_FIRST (__VA_ARGS__), \
-                    _NMLOG_PREFIX_NAME, \
-                    (_domain == LOGD_DHCP4 ? "4" : (_domain == LOGD_DHCP6 ? "6" : "")), \
-                    NM_PRINT_FMT_QUOTED (__ifname, " (", __ifname, ")", "") \
-                    _NM_UTILS_MACRO_REST (__VA_ARGS__)); \
-        } \
-    } G_STMT_END
+         * safe. */                   \
+        if (nm_logging_enabled(_level, _NMLOG_DOMAIN)) {                                 \
+            NMDhcpClient *    _self    = (NMDhcpClient *) (self);                        \
+            const char *      __ifname = _self ? nm_dhcp_client_get_iface(_self) : NULL; \
+            const NMLogDomain _domain  = _nm_dhcp_client_get_domain(_self);              \
+                                                                                         \
+            nm_log(_level,                                                               \
+                   _domain,                                                              \
+                   __ifname,                                                             \
+                   NULL,                                                                 \
+                   "%s%s%s%s%s: " _NM_UTILS_MACRO_FIRST(__VA_ARGS__),                    \
+                   _NMLOG_PREFIX_NAME,                                                   \
+                   (_domain == LOGD_DHCP4 ? "4" : (_domain == LOGD_DHCP6 ? "6" : "")),   \
+                   NM_PRINT_FMT_QUOTED(__ifname, " (", __ifname, ")", "")                \
+                       _NM_UTILS_MACRO_REST(__VA_ARGS__));                               \
+        }                                                                                \
+    }                                                                                    \
+    G_STMT_END
 
-#define _NMLOG2(level, domain, ifname, ...) \
-    G_STMT_START { \
-        const NMLogLevel _level = (level); \
-        const NMLogDomain _domain = (domain); \
-        \
+#define _NMLOG2(level, domain, ifname, ...)                                            \
+    G_STMT_START                                                                       \
+    {                                                                                  \
+        const NMLogLevel  _level  = (level);                                           \
+        const NMLogDomain _domain = (domain);                                          \
+                                                                                       \
         /* we check first for LOGD_DHCP instead of the correct domain.
          * In the worst case, we guess wrong and enter the block.
          *
          * Same for the _NMLOG_ENABLED() macro. Probably it would be more
          * expensive to determine the correct value then what we could
-         * safe. */ \
-        if (nm_logging_enabled (_level, _domain)) { \
-            const char *__ifname = (ifname); \
-            \
-            nm_log (_level, _domain, __ifname, NULL, \
-                    "%s%s%s%s%s: " _NM_UTILS_MACRO_FIRST (__VA_ARGS__), \
-                    _NMLOG_PREFIX_NAME, \
-                    (_domain == LOGD_DHCP4 ? "4" : (_domain == LOGD_DHCP6 ? "6" : "")), \
-                    NM_PRINT_FMT_QUOTED (__ifname, " (", __ifname, ")", "") \
-                    _NM_UTILS_MACRO_REST (__VA_ARGS__)); \
-        } \
-    } G_STMT_END
+         * safe. */                 \
+        if (nm_logging_enabled(_level, _domain)) {                                     \
+            const char *__ifname = (ifname);                                           \
+                                                                                       \
+            nm_log(_level,                                                             \
+                   _domain,                                                            \
+                   __ifname,                                                           \
+                   NULL,                                                               \
+                   "%s%s%s%s%s: " _NM_UTILS_MACRO_FIRST(__VA_ARGS__),                  \
+                   _NMLOG_PREFIX_NAME,                                                 \
+                   (_domain == LOGD_DHCP4 ? "4" : (_domain == LOGD_DHCP6 ? "6" : "")), \
+                   NM_PRINT_FMT_QUOTED(__ifname, " (", __ifname, ")", "")              \
+                       _NM_UTILS_MACRO_REST(__VA_ARGS__));                             \
+        }                                                                              \
+    }                                                                                  \
+    G_STMT_END
 
 #endif /* __NETWORKMANAGER_DHCP_CLIENT_LOGGING_H__ */
diff --git a/src/dhcp/nm-dhcp-client.c b/src/dhcp/nm-dhcp-client.c
index f7324baf..46ab4895 100644
--- a/src/dhcp/nm-dhcp-client.c
+++ b/src/dhcp/nm-dhcp-client.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2005 - 2010 Red Hat, Inc.
  */
@@ -26,1232 +26,1312 @@
 
 /*****************************************************************************/
 
-enum {
-	SIGNAL_STATE_CHANGED,
-	SIGNAL_PREFIX_DELEGATED,
-	LAST_SIGNAL
-};
-
-static guint signals[LAST_SIGNAL] = { 0 };
-
-NM_GOBJECT_PROPERTIES_DEFINE (NMDhcpClient,
-	PROP_ADDR_FAMILY,
-	PROP_FLAGS,
-	PROP_HWADDR,
-	PROP_BROADCAST_HWADDR,
-	PROP_IFACE,
-	PROP_IFINDEX,
-	PROP_MULTI_IDX,
-	PROP_ROUTE_METRIC,
-	PROP_ROUTE_TABLE,
-	PROP_TIMEOUT,
-	PROP_UUID,
-	PROP_IAID,
-	PROP_IAID_EXPLICIT,
-	PROP_HOSTNAME,
-	PROP_HOSTNAME_FLAGS,
-	PROP_MUD_URL,
-);
+enum { SIGNAL_STATE_CHANGED, SIGNAL_PREFIX_DELEGATED, LAST_SIGNAL };
+
+static guint signals[LAST_SIGNAL] = {0};
+
+NM_GOBJECT_PROPERTIES_DEFINE(NMDhcpClient,
+                             PROP_ADDR_FAMILY,
+                             PROP_FLAGS,
+                             PROP_HWADDR,
+                             PROP_BROADCAST_HWADDR,
+                             PROP_IFACE,
+                             PROP_IFINDEX,
+                             PROP_MULTI_IDX,
+                             PROP_ROUTE_METRIC,
+                             PROP_ROUTE_TABLE,
+                             PROP_TIMEOUT,
+                             PROP_UUID,
+                             PROP_IAID,
+                             PROP_IAID_EXPLICIT,
+                             PROP_HOSTNAME,
+                             PROP_HOSTNAME_FLAGS,
+                             PROP_MUD_URL,
+                             PROP_VENDOR_CLASS_IDENTIFIER,
+                             PROP_REJECT_SERVERS, );
 
 typedef struct _NMDhcpClientPrivate {
-	NMDedupMultiIndex *multi_idx;
-	char *       iface;
-	GBytes *     hwaddr;
-	GBytes *     bcast_hwaddr;
-	char *       uuid;
-	GBytes *     client_id;
-	char *       hostname;
-	char *       mud_url;
-	pid_t        pid;
-	guint        timeout_id;
-	guint        watch_id;
-	int          addr_family;
-	int          ifindex;
-	guint32      route_table;
-	guint32      route_metric;
-	guint32      timeout;
-	guint32      iaid;
-	NMDhcpState  state;
-	NMDhcpHostnameFlags hostname_flags;
-	bool         info_only:1;
-	bool         use_fqdn:1;
-	bool         iaid_explicit:1;
+    NMDedupMultiIndex * multi_idx;
+    char *              iface;
+    GBytes *            hwaddr;
+    GBytes *            bcast_hwaddr;
+    char *              uuid;
+    GBytes *            client_id;
+    char *              hostname;
+    const char **       reject_servers;
+    char *              mud_url;
+    GBytes *            vendor_class_identifier;
+    pid_t               pid;
+    guint               timeout_id;
+    guint               watch_id;
+    int                 addr_family;
+    int                 ifindex;
+    guint32             route_table;
+    guint32             route_metric;
+    guint32             timeout;
+    guint32             iaid;
+    NMDhcpState         state;
+    NMDhcpHostnameFlags hostname_flags;
+    bool                info_only : 1;
+    bool                use_fqdn : 1;
+    bool                iaid_explicit : 1;
 } NMDhcpClientPrivate;
 
-G_DEFINE_ABSTRACT_TYPE (NMDhcpClient, nm_dhcp_client, G_TYPE_OBJECT)
+G_DEFINE_ABSTRACT_TYPE(NMDhcpClient, nm_dhcp_client, G_TYPE_OBJECT)
 
-#define NM_DHCP_CLIENT_GET_PRIVATE(self) _NM_GET_PRIVATE_PTR (self, NMDhcpClient, NM_IS_DHCP_CLIENT)
+#define NM_DHCP_CLIENT_GET_PRIVATE(self) _NM_GET_PRIVATE_PTR(self, NMDhcpClient, NM_IS_DHCP_CLIENT)
 
 /*****************************************************************************/
 
 pid_t
-nm_dhcp_client_get_pid (NMDhcpClient *self)
+nm_dhcp_client_get_pid(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), -1);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), -1);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->pid;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->pid;
 }
 
 NMDedupMultiIndex *
-nm_dhcp_client_get_multi_idx (NMDhcpClient *self)
+nm_dhcp_client_get_multi_idx(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NULL);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->multi_idx;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->multi_idx;
 }
 
 const char *
-nm_dhcp_client_get_iface (NMDhcpClient *self)
+nm_dhcp_client_get_iface(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NULL);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->iface;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->iface;
 }
 
 int
-nm_dhcp_client_get_ifindex (NMDhcpClient *self)
+nm_dhcp_client_get_ifindex(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), -1);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), -1);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->ifindex;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->ifindex;
 }
 
 int
-nm_dhcp_client_get_addr_family (NMDhcpClient *self)
+nm_dhcp_client_get_addr_family(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), AF_UNSPEC);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), AF_UNSPEC);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->addr_family;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->addr_family;
 }
 
 const char *
-nm_dhcp_client_get_uuid (NMDhcpClient *self)
+nm_dhcp_client_get_uuid(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NULL);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->uuid;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->uuid;
 }
 
 GBytes *
-nm_dhcp_client_get_hw_addr (NMDhcpClient *self)
+nm_dhcp_client_get_hw_addr(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NULL);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->hwaddr;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->hwaddr;
 }
 
 GBytes *
-nm_dhcp_client_get_broadcast_hw_addr (NMDhcpClient *self)
+nm_dhcp_client_get_broadcast_hw_addr(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NULL);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->bcast_hwaddr;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->bcast_hwaddr;
 }
 
 guint32
-nm_dhcp_client_get_route_table (NMDhcpClient *self)
+nm_dhcp_client_get_route_table(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), RT_TABLE_MAIN);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), RT_TABLE_MAIN);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->route_table;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->route_table;
 }
 
 void
-nm_dhcp_client_set_route_table (NMDhcpClient *self, guint32 route_table)
+nm_dhcp_client_set_route_table(NMDhcpClient *self, guint32 route_table)
 {
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	if (route_table != priv->route_table) {
-		priv->route_table = route_table;
-		_notify (self, PROP_ROUTE_TABLE);
-	}
+    if (route_table != priv->route_table) {
+        priv->route_table = route_table;
+        _notify(self, PROP_ROUTE_TABLE);
+    }
 }
 
 guint32
-nm_dhcp_client_get_route_metric (NMDhcpClient *self)
+nm_dhcp_client_get_route_metric(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), G_MAXUINT32);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), G_MAXUINT32);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->route_metric;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->route_metric;
 }
 
 void
-nm_dhcp_client_set_route_metric (NMDhcpClient *self, guint32 route_metric)
+nm_dhcp_client_set_route_metric(NMDhcpClient *self, guint32 route_metric)
 {
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	if (route_metric != priv->route_metric) {
-		priv->route_metric = route_metric;
-		_notify (self, PROP_ROUTE_METRIC);
-	}
+    if (route_metric != priv->route_metric) {
+        priv->route_metric = route_metric;
+        _notify(self, PROP_ROUTE_METRIC);
+    }
 }
 
 guint32
-nm_dhcp_client_get_timeout (NMDhcpClient *self)
+nm_dhcp_client_get_timeout(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), 0);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), 0);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->timeout;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->timeout;
 }
 
 guint32
-nm_dhcp_client_get_iaid (NMDhcpClient *self)
+nm_dhcp_client_get_iaid(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), 0);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), 0);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->iaid;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->iaid;
 }
 
 gboolean
-nm_dhcp_client_get_iaid_explicit (NMDhcpClient *self)
+nm_dhcp_client_get_iaid_explicit(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), FALSE);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->iaid_explicit;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->iaid_explicit;
 }
 
 GBytes *
-nm_dhcp_client_get_client_id (NMDhcpClient *self)
+nm_dhcp_client_get_client_id(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NULL);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->client_id;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->client_id;
 }
 
 static void
-_set_client_id (NMDhcpClient *self, GBytes *client_id, gboolean take)
+_set_client_id(NMDhcpClient *self, GBytes *client_id, gboolean take)
 {
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
-
-	nm_assert (!client_id || g_bytes_get_size (client_id) >= 2);
-
-	if (   priv->client_id == client_id
-	    || (   priv->client_id
-	        && client_id
-	        && g_bytes_equal (priv->client_id, client_id))) {
-		if (take && client_id)
-			g_bytes_unref (client_id);
-		return;
-	}
-
-	if (priv->client_id)
-		g_bytes_unref (priv->client_id);
-	priv->client_id = client_id;
-	if (!take && client_id)
-		g_bytes_ref (client_id);
-
-	{
-		gs_free char *s = NULL;
-
-		_LOGT ("%s: set %s",
-		       nm_dhcp_client_get_addr_family (self) == AF_INET6
-		         ? "duid"
-		         : "client-id",
-		       priv->client_id
-		         ? (s = nm_dhcp_utils_duid_to_string (priv->client_id))
-		         : "default");
-	}
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
+
+    nm_assert(!client_id || g_bytes_get_size(client_id) >= 2);
+
+    if (priv->client_id == client_id
+        || (priv->client_id && client_id && g_bytes_equal(priv->client_id, client_id))) {
+        if (take && client_id)
+            g_bytes_unref(client_id);
+        return;
+    }
+
+    if (priv->client_id)
+        g_bytes_unref(priv->client_id);
+    priv->client_id = client_id;
+    if (!take && client_id)
+        g_bytes_ref(client_id);
+
+    {
+        gs_free char *s = NULL;
+
+        _LOGT("%s: set %s",
+              nm_dhcp_client_get_addr_family(self) == AF_INET6 ? "duid" : "client-id",
+              priv->client_id ? (s = nm_dhcp_utils_duid_to_string(priv->client_id)) : "default");
+    }
 }
 
 void
-nm_dhcp_client_set_client_id (NMDhcpClient *self, GBytes *client_id)
+nm_dhcp_client_set_client_id(NMDhcpClient *self, GBytes *client_id)
 {
-	g_return_if_fail (NM_IS_DHCP_CLIENT (self));
-	g_return_if_fail (!client_id || g_bytes_get_size (client_id) >= 2);
+    g_return_if_fail(NM_IS_DHCP_CLIENT(self));
+    g_return_if_fail(!client_id || g_bytes_get_size(client_id) >= 2);
 
-	_set_client_id (self, client_id, FALSE);
+    _set_client_id(self, client_id, FALSE);
 }
 
 void
-nm_dhcp_client_set_client_id_bin (NMDhcpClient *self,
-                                  guint8 type,
-                                  const guint8 *client_id,
-                                  gsize len)
+nm_dhcp_client_set_client_id_bin(NMDhcpClient *self,
+                                 guint8        type,
+                                 const guint8 *client_id,
+                                 gsize         len)
 {
-	guint8 *buf;
-	GBytes *b;
-
-	g_return_if_fail (NM_IS_DHCP_CLIENT (self));
-	g_return_if_fail (client_id);
-	g_return_if_fail (len > 0);
-
-	buf = g_malloc (len + 1);
-	buf[0] = type;
-	memcpy (buf + 1, client_id, len);
-	b = g_bytes_new_take (buf, len + 1);
-	_set_client_id (self, b, TRUE);
+    guint8 *buf;
+    GBytes *b;
+
+    g_return_if_fail(NM_IS_DHCP_CLIENT(self));
+    g_return_if_fail(client_id);
+    g_return_if_fail(len > 0);
+
+    buf    = g_malloc(len + 1);
+    buf[0] = type;
+    memcpy(buf + 1, client_id, len);
+    b = g_bytes_new_take(buf, len + 1);
+    _set_client_id(self, b, TRUE);
 }
 
 const char *
-nm_dhcp_client_get_hostname (NMDhcpClient *self)
+nm_dhcp_client_get_hostname(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NULL);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->hostname;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->hostname;
 }
 
 NMDhcpHostnameFlags
-nm_dhcp_client_get_hostname_flags (NMDhcpClient *self)
+nm_dhcp_client_get_hostname_flags(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NM_DHCP_HOSTNAME_FLAG_NONE);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NM_DHCP_HOSTNAME_FLAG_NONE);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->hostname_flags;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->hostname_flags;
 }
 
 gboolean
-nm_dhcp_client_get_info_only (NMDhcpClient *self)
+nm_dhcp_client_get_info_only(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), FALSE);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->info_only;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->info_only;
 }
 
 gboolean
-nm_dhcp_client_get_use_fqdn (NMDhcpClient *self)
+nm_dhcp_client_get_use_fqdn(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), FALSE);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->use_fqdn;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->use_fqdn;
 }
 
 const char *
-nm_dhcp_client_get_mud_url (NMDhcpClient *self)
+nm_dhcp_client_get_mud_url(NMDhcpClient *self)
+{
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NULL);
+
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->mud_url;
+}
+
+GBytes *
+nm_dhcp_client_get_vendor_class_identifier(NMDhcpClient *self)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), NULL);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NULL);
 
-	return NM_DHCP_CLIENT_GET_PRIVATE (self)->mud_url;
+    return NM_DHCP_CLIENT_GET_PRIVATE(self)->vendor_class_identifier;
+}
+
+const char *const *
+nm_dhcp_client_get_reject_servers(NMDhcpClient *self)
+{
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), NULL);
+
+    return (const char *const *) NM_DHCP_CLIENT_GET_PRIVATE(self)->reject_servers;
 }
 
 /*****************************************************************************/
 
 static const char *state_table[NM_DHCP_STATE_MAX + 1] = {
-	[NM_DHCP_STATE_UNKNOWN]    = "unknown",
-	[NM_DHCP_STATE_BOUND]      = "bound",
-	[NM_DHCP_STATE_EXTENDED]   = "extended",
-	[NM_DHCP_STATE_TIMEOUT]    = "timeout",
-	[NM_DHCP_STATE_EXPIRE]     = "expire",
-	[NM_DHCP_STATE_DONE]       = "done",
-	[NM_DHCP_STATE_FAIL]       = "fail",
-	[NM_DHCP_STATE_TERMINATED] = "terminated",
+    [NM_DHCP_STATE_UNKNOWN]    = "unknown",
+    [NM_DHCP_STATE_BOUND]      = "bound",
+    [NM_DHCP_STATE_EXTENDED]   = "extended",
+    [NM_DHCP_STATE_TIMEOUT]    = "timeout",
+    [NM_DHCP_STATE_EXPIRE]     = "expire",
+    [NM_DHCP_STATE_DONE]       = "done",
+    [NM_DHCP_STATE_FAIL]       = "fail",
+    [NM_DHCP_STATE_TERMINATED] = "terminated",
 };
 
 static const char *
-state_to_string (NMDhcpState state)
+state_to_string(NMDhcpState state)
 {
-	if ((gsize) state < G_N_ELEMENTS (state_table))
-		return state_table[state];
-	return NULL;
+    if ((gsize) state < G_N_ELEMENTS(state_table))
+        return state_table[state];
+    return NULL;
 }
 
 static NMDhcpState
-reason_to_state (NMDhcpClient *self, const char *iface, const char *reason)
+reason_to_state(NMDhcpClient *self, const char *iface, const char *reason)
 {
-	if (g_ascii_strcasecmp (reason, "bound") == 0 ||
-	    g_ascii_strcasecmp (reason, "bound6") == 0)
-		return NM_DHCP_STATE_BOUND;
-	else if (g_ascii_strcasecmp (reason, "renew") == 0 ||
-	         g_ascii_strcasecmp (reason, "renew6") == 0 ||
-	         g_ascii_strcasecmp (reason, "reboot") == 0 ||
-	         g_ascii_strcasecmp (reason, "rebind") == 0 ||
-	         g_ascii_strcasecmp (reason, "rebind6") == 0)
-		return NM_DHCP_STATE_EXTENDED;
-	else if (g_ascii_strcasecmp (reason, "timeout") == 0)
-		return NM_DHCP_STATE_TIMEOUT;
-	else if (g_ascii_strcasecmp (reason, "nak") == 0 ||
-	         g_ascii_strcasecmp (reason, "expire") == 0 ||
-	         g_ascii_strcasecmp (reason, "expire6") == 0)
-		return NM_DHCP_STATE_EXPIRE;
-	else if (g_ascii_strcasecmp (reason, "end") == 0)
-		return NM_DHCP_STATE_DONE;
-	else if (g_ascii_strcasecmp (reason, "fail") == 0 ||
-	         g_ascii_strcasecmp (reason, "abend") == 0)
-		return NM_DHCP_STATE_FAIL;
-
-	_LOGD ("unmapped DHCP state '%s'", reason);
-	return NM_DHCP_STATE_UNKNOWN;
+    if (g_ascii_strcasecmp(reason, "bound") == 0 || g_ascii_strcasecmp(reason, "bound6") == 0)
+        return NM_DHCP_STATE_BOUND;
+    else if (g_ascii_strcasecmp(reason, "renew") == 0 || g_ascii_strcasecmp(reason, "renew6") == 0
+             || g_ascii_strcasecmp(reason, "reboot") == 0
+             || g_ascii_strcasecmp(reason, "rebind") == 0
+             || g_ascii_strcasecmp(reason, "rebind6") == 0)
+        return NM_DHCP_STATE_EXTENDED;
+    else if (g_ascii_strcasecmp(reason, "timeout") == 0)
+        return NM_DHCP_STATE_TIMEOUT;
+    else if (g_ascii_strcasecmp(reason, "nak") == 0 || g_ascii_strcasecmp(reason, "expire") == 0
+             || g_ascii_strcasecmp(reason, "expire6") == 0)
+        return NM_DHCP_STATE_EXPIRE;
+    else if (g_ascii_strcasecmp(reason, "end") == 0)
+        return NM_DHCP_STATE_DONE;
+    else if (g_ascii_strcasecmp(reason, "fail") == 0 || g_ascii_strcasecmp(reason, "abend") == 0)
+        return NM_DHCP_STATE_FAIL;
+
+    _LOGD("unmapped DHCP state '%s'", reason);
+    return NM_DHCP_STATE_UNKNOWN;
 }
 
 /*****************************************************************************/
 
 static void
-timeout_cleanup (NMDhcpClient *self)
+timeout_cleanup(NMDhcpClient *self)
 {
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	nm_clear_g_source (&priv->timeout_id);
+    nm_clear_g_source(&priv->timeout_id);
 }
 
 static void
-watch_cleanup (NMDhcpClient *self)
+watch_cleanup(NMDhcpClient *self)
 {
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	nm_clear_g_source (&priv->watch_id);
+    nm_clear_g_source(&priv->watch_id);
 }
 
 void
-nm_dhcp_client_stop_pid (pid_t pid, const char *iface)
+nm_dhcp_client_stop_pid(pid_t pid, const char *iface)
 {
-	char *name = iface ? g_strdup_printf ("dhcp-client-%s", iface) : NULL;
-
-	g_return_if_fail (pid > 1);
-
-	nm_utils_kill_child_sync (pid, SIGTERM, LOGD_DHCP, name ?: "dhcp-client", NULL,
-	                          1000 / 2, 1000 / 20);
-	g_free (name);
+    char *name = iface ? g_strdup_printf("dhcp-client-%s", iface) : NULL;
+
+    g_return_if_fail(pid > 1);
+
+    nm_utils_kill_child_sync(pid,
+                             SIGTERM,
+                             LOGD_DHCP,
+                             name ?: "dhcp-client",
+                             NULL,
+                             1000 / 2,
+                             1000 / 20);
+    g_free(name);
 }
 
 static void
-stop (NMDhcpClient *self, gboolean release)
+stop(NMDhcpClient *self, gboolean release)
 {
-	NMDhcpClientPrivate *priv;
+    NMDhcpClientPrivate *priv;
 
-	g_return_if_fail (NM_IS_DHCP_CLIENT (self));
+    g_return_if_fail(NM_IS_DHCP_CLIENT(self));
 
-	priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	if (priv->pid > 0) {
-		/* Clean up the watch handler since we're explicitly killing the daemon */
-		watch_cleanup (self);
-		nm_dhcp_client_stop_pid (priv->pid, priv->iface);
-	}
-	priv->pid = -1;
+    if (priv->pid > 0) {
+        /* Clean up the watch handler since we're explicitly killing the daemon */
+        watch_cleanup(self);
+        nm_dhcp_client_stop_pid(priv->pid, priv->iface);
+    }
+    priv->pid = -1;
 }
 
 void
-nm_dhcp_client_set_state (NMDhcpClient *self,
-                          NMDhcpState new_state,
-                          NMIPConfig *ip_config,
-                          GHashTable *options)
+nm_dhcp_client_set_state(NMDhcpClient *self,
+                         NMDhcpState   new_state,
+                         NMIPConfig *  ip_config,
+                         GHashTable *  options)
 {
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
-	gs_free char *event_id = NULL;
-
-	if (NM_IN_SET (new_state, NM_DHCP_STATE_BOUND, NM_DHCP_STATE_EXTENDED)) {
-		g_return_if_fail (NM_IS_IP_CONFIG (ip_config, priv->addr_family));
-		g_return_if_fail (options);
-	} else {
-		g_return_if_fail (!ip_config);
-		g_return_if_fail (!options);
-	}
-
-	if (new_state >= NM_DHCP_STATE_BOUND)
-		timeout_cleanup (self);
-	if (new_state >= NM_DHCP_STATE_TIMEOUT)
-		watch_cleanup (self);
-
-	/* The client may send same-state transitions for RENEW/REBIND events and
-	 * the lease may have changed, so handle same-state transitions for the
-	 * EXTENDED and BOUND states.  Ignore same-state transitions for other
-	 * events since the lease won't have changed and the state was already handled.
-	 */
-	if (   (priv->state == new_state)
-	    && !NM_IN_SET (new_state, NM_DHCP_STATE_BOUND, NM_DHCP_STATE_EXTENDED))
-		return;
-
-	if (_LOGI_ENABLED ()) {
-		gs_free const char **keys = NULL;
-		guint i, nkeys;
-
-		keys = nm_utils_strdict_get_keys (options, TRUE, &nkeys);
-		for (i = 0; i < nkeys; i++) {
-			_LOGI ("option %-20s => '%s'", keys[i],
-		               (char *) g_hash_table_lookup (options, keys[i]));
-		}
-	}
-
-	if (   priv->addr_family == AF_INET6
-	    && NM_IN_SET (new_state, NM_DHCP_STATE_BOUND, NM_DHCP_STATE_EXTENDED)) {
-		char *start, *iaid;
-
-		iaid = g_hash_table_lookup (options, "iaid");
-		start = g_hash_table_lookup (options, "life_starts");
-		if (iaid && start)
-			event_id = g_strdup_printf ("%s|%s", iaid, start);
-	}
-
-	_LOGI ("state changed %s -> %s%s%s%s",
-	       state_to_string (priv->state),
-	       state_to_string (new_state),
-	       NM_PRINT_FMT_QUOTED (event_id, ", event ID=\"", event_id, "\"", ""));
-
-	priv->state = new_state;
-	g_signal_emit (G_OBJECT (self),
-	               signals[SIGNAL_STATE_CHANGED], 0,
-	               new_state,
-	               ip_config,
-	               options,
-	               event_id);
+    NMDhcpClientPrivate *priv     = NM_DHCP_CLIENT_GET_PRIVATE(self);
+    gs_free char *       event_id = NULL;
+
+    if (NM_IN_SET(new_state, NM_DHCP_STATE_BOUND, NM_DHCP_STATE_EXTENDED)) {
+        g_return_if_fail(NM_IS_IP_CONFIG_ADDR_FAMILY(ip_config, priv->addr_family));
+        g_return_if_fail(options);
+    } else {
+        g_return_if_fail(!ip_config);
+        g_return_if_fail(!options);
+    }
+
+    if (new_state >= NM_DHCP_STATE_BOUND)
+        timeout_cleanup(self);
+    if (new_state >= NM_DHCP_STATE_TIMEOUT)
+        watch_cleanup(self);
+
+    /* The client may send same-state transitions for RENEW/REBIND events and
+     * the lease may have changed, so handle same-state transitions for the
+     * EXTENDED and BOUND states.  Ignore same-state transitions for other
+     * events since the lease won't have changed and the state was already handled.
+     */
+    if ((priv->state == new_state)
+        && !NM_IN_SET(new_state, NM_DHCP_STATE_BOUND, NM_DHCP_STATE_EXTENDED))
+        return;
+
+    if (_LOGI_ENABLED()) {
+        gs_free const char **keys = NULL;
+        guint                i, nkeys;
+
+        keys = nm_utils_strdict_get_keys(options, TRUE, &nkeys);
+        for (i = 0; i < nkeys; i++) {
+            _LOGI("option %-20s => '%s'", keys[i], (char *) g_hash_table_lookup(options, keys[i]));
+        }
+    }
+
+    if (priv->addr_family == AF_INET6)
+        event_id = nm_dhcp_utils_get_dhcp6_event_id(options);
+
+    _LOGI("state changed %s -> %s%s%s%s",
+          state_to_string(priv->state),
+          state_to_string(new_state),
+          NM_PRINT_FMT_QUOTED(event_id, ", event ID=\"", event_id, "\"", ""));
+
+    priv->state = new_state;
+    g_signal_emit(G_OBJECT(self), signals[SIGNAL_STATE_CHANGED], 0, new_state, ip_config, options);
 }
 
 static gboolean
-transaction_timeout (gpointer user_data)
+transaction_timeout(gpointer user_data)
 {
-	NMDhcpClient *self = NM_DHCP_CLIENT (user_data);
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    NMDhcpClient *       self = NM_DHCP_CLIENT(user_data);
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	priv->timeout_id = 0;
-	_LOGW ("request timed out");
-	nm_dhcp_client_set_state (self, NM_DHCP_STATE_TIMEOUT, NULL, NULL);
-	return G_SOURCE_REMOVE;
+    priv->timeout_id = 0;
+    _LOGW("request timed out");
+    nm_dhcp_client_set_state(self, NM_DHCP_STATE_TIMEOUT, NULL, NULL);
+    return G_SOURCE_REMOVE;
 }
 
 static void
-daemon_watch_cb (GPid pid, int status, gpointer user_data)
+daemon_watch_cb(GPid pid, int status, gpointer user_data)
 {
-	NMDhcpClient *self = NM_DHCP_CLIENT (user_data);
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
-
-	g_return_if_fail (priv->watch_id);
-	priv->watch_id = 0;
-
-	if (WIFEXITED (status))
-		_LOGI ("client pid %d exited with status %d", pid, WEXITSTATUS (status));
-	else if (WIFSIGNALED (status))
-		_LOGI ("client pid %d killed by signal %d", pid, WTERMSIG (status));
-	else if (WIFSTOPPED(status))
-		_LOGI ("client pid %d stopped by signal %d", pid, WSTOPSIG (status));
-	else if (WIFCONTINUED (status))
-		_LOGI ("client pid %d resumed (by SIGCONT)", pid);
-	else
-		_LOGW ("client died abnormally");
-
-	priv->pid = -1;
-
-	nm_dhcp_client_set_state (self, NM_DHCP_STATE_TERMINATED, NULL, NULL);
+    NMDhcpClient *       self = NM_DHCP_CLIENT(user_data);
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
+
+    g_return_if_fail(priv->watch_id);
+    priv->watch_id = 0;
+
+    if (WIFEXITED(status))
+        _LOGI("client pid %d exited with status %d", pid, WEXITSTATUS(status));
+    else if (WIFSIGNALED(status))
+        _LOGI("client pid %d killed by signal %d", pid, WTERMSIG(status));
+    else if (WIFSTOPPED(status))
+        _LOGI("client pid %d stopped by signal %d", pid, WSTOPSIG(status));
+    else if (WIFCONTINUED(status))
+        _LOGI("client pid %d resumed (by SIGCONT)", pid);
+    else
+        _LOGW("client died abnormally");
+
+    priv->pid = -1;
+
+    nm_dhcp_client_set_state(self, NM_DHCP_STATE_TERMINATED, NULL, NULL);
 }
 
 void
-nm_dhcp_client_start_timeout (NMDhcpClient *self)
+nm_dhcp_client_start_timeout(NMDhcpClient *self)
 {
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	g_return_if_fail (priv->timeout_id == 0);
+    g_return_if_fail(priv->timeout_id == 0);
 
-	/* Set up a timeout on the transaction to kill it after the timeout */
+    /* Set up a timeout on the transaction to kill it after the timeout */
 
-	if (priv->timeout == NM_DHCP_TIMEOUT_INFINITY)
-		return;
+    if (priv->timeout == NM_DHCP_TIMEOUT_INFINITY)
+        return;
 
-	priv->timeout_id = g_timeout_add_seconds (priv->timeout,
-	                                          transaction_timeout,
-	                                          self);
+    priv->timeout_id = g_timeout_add_seconds(priv->timeout, transaction_timeout, self);
 }
 
 void
-nm_dhcp_client_watch_child (NMDhcpClient *self, pid_t pid)
+nm_dhcp_client_watch_child(NMDhcpClient *self, pid_t pid)
 {
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	g_return_if_fail (priv->pid == -1);
-	priv->pid = pid;
+    g_return_if_fail(priv->pid == -1);
+    priv->pid = pid;
 
-	nm_dhcp_client_start_timeout (self);
+    nm_dhcp_client_start_timeout(self);
 
-	g_return_if_fail (priv->watch_id == 0);
-	priv->watch_id = g_child_watch_add (pid, daemon_watch_cb, self);
+    g_return_if_fail(priv->watch_id == 0);
+    priv->watch_id = g_child_watch_add(pid, daemon_watch_cb, self);
 }
 
 gboolean
-nm_dhcp_client_start_ip4 (NMDhcpClient *self,
-                          GBytes *client_id,
-                          const char *dhcp_anycast_addr,
-                          const char *last_ip4_address,
-                          GError **error)
+nm_dhcp_client_start_ip4(NMDhcpClient *self,
+                         GBytes *      client_id,
+                         const char *  dhcp_anycast_addr,
+                         const char *  last_ip4_address,
+                         GError **     error)
 {
-	NMDhcpClientPrivate *priv;
+    NMDhcpClientPrivate *priv;
 
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), FALSE);
 
-	priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
-	g_return_val_if_fail (priv->pid == -1, FALSE);
-	g_return_val_if_fail (priv->addr_family == AF_INET, FALSE);
-	g_return_val_if_fail (priv->uuid != NULL, FALSE);
+    priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
+    g_return_val_if_fail(priv->pid == -1, FALSE);
+    g_return_val_if_fail(priv->addr_family == AF_INET, FALSE);
+    g_return_val_if_fail(priv->uuid != NULL, FALSE);
 
-	if (priv->timeout == NM_DHCP_TIMEOUT_INFINITY)
-		_LOGI ("activation: beginning transaction (no timeout)");
-	else
-		_LOGI ("activation: beginning transaction (timeout in %u seconds)", (guint) priv->timeout);
+    if (priv->timeout == NM_DHCP_TIMEOUT_INFINITY)
+        _LOGI("activation: beginning transaction (no timeout)");
+    else
+        _LOGI("activation: beginning transaction (timeout in %u seconds)", (guint) priv->timeout);
 
-	nm_dhcp_client_set_client_id (self, client_id);
+    nm_dhcp_client_set_client_id(self, client_id);
 
-	return NM_DHCP_CLIENT_GET_CLASS (self)->ip4_start (self,
-	                                                   dhcp_anycast_addr,
-	                                                   last_ip4_address,
-	                                                   error);
+    return NM_DHCP_CLIENT_GET_CLASS(self)->ip4_start(self,
+                                                     dhcp_anycast_addr,
+                                                     last_ip4_address,
+                                                     error);
 }
 
 gboolean
-nm_dhcp_client_accept (NMDhcpClient *self,
-                       GError **error)
+nm_dhcp_client_accept(NMDhcpClient *self, GError **error)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), FALSE);
 
-	if (NM_DHCP_CLIENT_GET_CLASS (self)->accept) {
-		return NM_DHCP_CLIENT_GET_CLASS (self)->accept (self,
-		                                                error);
-	}
+    if (NM_DHCP_CLIENT_GET_CLASS(self)->accept) {
+        return NM_DHCP_CLIENT_GET_CLASS(self)->accept(self, error);
+    }
 
-	return TRUE;
+    return TRUE;
 }
 
 gboolean
-nm_dhcp_client_decline (NMDhcpClient *self,
-                        const char *error_message,
-                        GError **error)
+nm_dhcp_client_decline(NMDhcpClient *self, const char *error_message, GError **error)
 {
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), FALSE);
 
-	if (NM_DHCP_CLIENT_GET_CLASS (self)->decline) {
-		return NM_DHCP_CLIENT_GET_CLASS (self)->decline (self,
-		                                                 error_message,
-		                                                 error);
-	}
+    if (NM_DHCP_CLIENT_GET_CLASS(self)->decline) {
+        return NM_DHCP_CLIENT_GET_CLASS(self)->decline(self, error_message, error);
+    }
 
-	return TRUE;
+    return TRUE;
 }
 
 static GBytes *
-get_duid (NMDhcpClient *self)
+get_duid(NMDhcpClient *self)
 {
-	return NULL;
+    return NULL;
 }
 
 gboolean
-nm_dhcp_client_start_ip6 (NMDhcpClient *self,
-                          GBytes *client_id,
-                          gboolean enforce_duid,
-                          const char *dhcp_anycast_addr,
-                          const struct in6_addr *ll_addr,
-                          NMSettingIP6ConfigPrivacy privacy,
-                          guint needed_prefixes,
-                          GError **error)
+nm_dhcp_client_start_ip6(NMDhcpClient *            self,
+                         GBytes *                  client_id,
+                         gboolean                  enforce_duid,
+                         const char *              dhcp_anycast_addr,
+                         const struct in6_addr *   ll_addr,
+                         NMSettingIP6ConfigPrivacy privacy,
+                         guint                     needed_prefixes,
+                         GError **                 error)
 {
-	NMDhcpClientPrivate *priv;
-	gs_unref_bytes GBytes *own_client_id = NULL;
+    NMDhcpClientPrivate *priv;
+    gs_unref_bytes GBytes *own_client_id = NULL;
 
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
-	g_return_val_if_fail (client_id, FALSE);
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), FALSE);
+    g_return_val_if_fail(client_id, FALSE);
 
-	priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	g_return_val_if_fail (priv->pid == -1, FALSE);
-	g_return_val_if_fail (priv->addr_family == AF_INET6, FALSE);
-	g_return_val_if_fail (priv->uuid != NULL, FALSE);
-	g_return_val_if_fail (!priv->client_id, FALSE);
+    g_return_val_if_fail(priv->pid == -1, FALSE);
+    g_return_val_if_fail(priv->addr_family == AF_INET6, FALSE);
+    g_return_val_if_fail(priv->uuid != NULL, FALSE);
+    g_return_val_if_fail(!priv->client_id, FALSE);
 
-	if (!enforce_duid)
-		own_client_id = NM_DHCP_CLIENT_GET_CLASS (self)->get_duid (self);
+    if (!enforce_duid)
+        own_client_id = NM_DHCP_CLIENT_GET_CLASS(self)->get_duid(self);
 
-	_set_client_id (self,
-	                own_client_id ?: client_id,
-	                FALSE);
+    _set_client_id(self, own_client_id ?: client_id, FALSE);
 
-	if (priv->timeout == NM_DHCP_TIMEOUT_INFINITY)
-		_LOGI ("activation: beginning transaction (no timeout)");
-	else
-		_LOGI ("activation: beginning transaction (timeout in %u seconds)", (guint) priv->timeout);
+    if (priv->timeout == NM_DHCP_TIMEOUT_INFINITY)
+        _LOGI("activation: beginning transaction (no timeout)");
+    else
+        _LOGI("activation: beginning transaction (timeout in %u seconds)", (guint) priv->timeout);
 
-	return NM_DHCP_CLIENT_GET_CLASS (self)->ip6_start (self,
-	                                                   dhcp_anycast_addr,
-	                                                   ll_addr,
-	                                                   privacy,
-	                                                   needed_prefixes,
-	                                                   error);
+    return NM_DHCP_CLIENT_GET_CLASS(self)
+        ->ip6_start(self, dhcp_anycast_addr, ll_addr, privacy, needed_prefixes, error);
 }
 
 void
-nm_dhcp_client_stop_existing (const char *pid_file, const char *binary_name)
+nm_dhcp_client_stop_existing(const char *pid_file, const char *binary_name)
 {
-	guint64 start_time;
-	pid_t pid, ppid;
-	const char *exe;
-	char proc_path[NM_STRLEN ("/proc/%lu/cmdline") + 100];
-	gs_free char *pid_contents = NULL, *proc_contents = NULL;
-
-	/* Check for an existing instance and stop it */
-	if (!g_file_get_contents (pid_file, &pid_contents, NULL, NULL))
-		return;
-
-	pid = _nm_utils_ascii_str_to_int64 (pid_contents, 10, 1, G_MAXINT64, 0);
-	if (pid <= 0)
-		goto out;
-
-	start_time = nm_utils_get_start_time_for_pid (pid, NULL, &ppid);
-	if (start_time == 0)
-		goto out;
-
-	nm_sprintf_buf (proc_path, "/proc/%lu/cmdline", (unsigned long) pid);
-	if (!g_file_get_contents (proc_path, &proc_contents, NULL, NULL))
-		goto out;
-
-	exe = strrchr (proc_contents, '/');
-	if (exe)
-		exe++;
-	else
-		exe = proc_contents;
-	if (!nm_streq0 (exe, binary_name))
-		goto out;
-
-	if (ppid == getpid ()) {
-		/* the process is our own child. */
-		nm_utils_kill_child_sync (pid, SIGTERM, LOGD_DHCP, "dhcp-client", NULL, 1000 / 2, 1000 / 20);
-	} else {
-		nm_utils_kill_process_sync (pid, start_time, SIGTERM, LOGD_DHCP,
-		                            "dhcp-client", 1000 / 2, 1000 / 20, 2000);
-	}
+    guint64       start_time;
+    pid_t         pid, ppid;
+    const char *  exe;
+    char          proc_path[NM_STRLEN("/proc/%lu/cmdline") + 100];
+    gs_free char *pid_contents = NULL, *proc_contents = NULL;
+
+    /* Check for an existing instance and stop it */
+    if (!g_file_get_contents(pid_file, &pid_contents, NULL, NULL))
+        return;
+
+    pid = _nm_utils_ascii_str_to_int64(pid_contents, 10, 1, G_MAXINT64, 0);
+    if (pid <= 0)
+        goto out;
+
+    start_time = nm_utils_get_start_time_for_pid(pid, NULL, &ppid);
+    if (start_time == 0)
+        goto out;
+
+    nm_sprintf_buf(proc_path, "/proc/%lu/cmdline", (unsigned long) pid);
+    if (!g_file_get_contents(proc_path, &proc_contents, NULL, NULL))
+        goto out;
+
+    exe = strrchr(proc_contents, '/');
+    if (exe)
+        exe++;
+    else
+        exe = proc_contents;
+    if (!nm_streq0(exe, binary_name))
+        goto out;
+
+    if (ppid == getpid()) {
+        /* the process is our own child. */
+        nm_utils_kill_child_sync(pid, SIGTERM, LOGD_DHCP, "dhcp-client", NULL, 1000 / 2, 1000 / 20);
+    } else {
+        nm_utils_kill_process_sync(pid,
+                                   start_time,
+                                   SIGTERM,
+                                   LOGD_DHCP,
+                                   "dhcp-client",
+                                   1000 / 2,
+                                   1000 / 20,
+                                   2000);
+    }
 
 out:
-	if (remove (pid_file) == -1) {
-		int errsv = errno;
-
-		nm_log_dbg (LOGD_DHCP, "dhcp: could not remove pid file \"%s\": %s (%d)",
-		            pid_file, nm_strerror_native (errsv), errsv);
-	}
+    if (remove(pid_file) == -1) {
+        int errsv = errno;
+
+        nm_log_dbg(LOGD_DHCP,
+                   "dhcp: could not remove pid file \"%s\": %s (%d)",
+                   pid_file,
+                   nm_strerror_native(errsv),
+                   errsv);
+    }
 }
 
 void
-nm_dhcp_client_stop (NMDhcpClient *self, gboolean release)
+nm_dhcp_client_stop(NMDhcpClient *self, gboolean release)
 {
-	NMDhcpClientPrivate *priv;
-	pid_t old_pid = 0;
+    NMDhcpClientPrivate *priv;
+    pid_t                old_pid = 0;
 
-	g_return_if_fail (NM_IS_DHCP_CLIENT (self));
+    g_return_if_fail(NM_IS_DHCP_CLIENT(self));
 
-	priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	/* Kill the DHCP client */
-	old_pid = priv->pid;
-	NM_DHCP_CLIENT_GET_CLASS (self)->stop (self, release);
-	if (old_pid > 0)
-		_LOGI ("canceled DHCP transaction, DHCP client pid %d", old_pid);
-	else
-		_LOGI ("canceled DHCP transaction");
-	nm_assert (priv->pid == -1);
+    /* Kill the DHCP client */
+    old_pid = priv->pid;
+    NM_DHCP_CLIENT_GET_CLASS(self)->stop(self, release);
+    if (old_pid > 0)
+        _LOGI("canceled DHCP transaction, DHCP client pid %d", old_pid);
+    else
+        _LOGI("canceled DHCP transaction");
+    nm_assert(priv->pid == -1);
 
-	nm_dhcp_client_set_state (self, NM_DHCP_STATE_DONE, NULL, NULL);
+    nm_dhcp_client_set_state(self, NM_DHCP_STATE_DONE, NULL, NULL);
 }
 
 /*****************************************************************************/
 
 static char *
-bytearray_variant_to_string (NMDhcpClient *self, GVariant *value, const char *key)
+bytearray_variant_to_string(NMDhcpClient *self, GVariant *value, const char *key)
 {
-	const guint8 *array;
-	gsize length;
-	GString *str;
-	int i;
-	unsigned char c;
-	char *converted = NULL;
-
-	g_return_val_if_fail (value != NULL, NULL);
-
-	array = g_variant_get_fixed_array (value, &length, 1);
-
-	/* Since the DHCP options come through environment variables, they should
-	 * already be UTF-8 safe, but just make sure.
-	 */
-	str = g_string_sized_new (length);
-	for (i = 0; i < length; i++) {
-		c = array[i];
-
-		/* Convert NULLs to spaces and non-ASCII characters to ? */
-		if (c == '\0')
-			c = ' ';
-		else if (c > 127)
-			c = '?';
-		str = g_string_append_c (str, c);
-	}
-	str = g_string_append_c (str, '\0');
-
-	converted = str->str;
-	if (!g_utf8_validate (converted, -1, NULL))
-		_LOGW ("option '%s' couldn't be converted to UTF-8", key);
-	g_string_free (str, FALSE);
-	return converted;
+    const guint8 *array;
+    gsize         length;
+    GString *     str;
+    int           i;
+    unsigned char c;
+    char *        converted = NULL;
+
+    g_return_val_if_fail(value != NULL, NULL);
+
+    array = g_variant_get_fixed_array(value, &length, 1);
+
+    /* Since the DHCP options come through environment variables, they should
+     * already be UTF-8 safe, but just make sure.
+     */
+    str = g_string_sized_new(length);
+    for (i = 0; i < length; i++) {
+        c = array[i];
+
+        /* Convert NULLs to spaces and non-ASCII characters to ? */
+        if (c == '\0')
+            c = ' ';
+        else if (c > 127)
+            c = '?';
+        str = g_string_append_c(str, c);
+    }
+    str = g_string_append_c(str, '\0');
+
+    converted = str->str;
+    if (!g_utf8_validate(converted, -1, NULL))
+        _LOGW("option '%s' couldn't be converted to UTF-8", key);
+    g_string_free(str, FALSE);
+    return converted;
 }
 
 static int
-label_is_unknown_xyz (const char *label)
+label_is_unknown_xyz(const char *label)
 {
-	if (!NM_STR_HAS_PREFIX (label, "unknown_"))
-		return -EINVAL;
+    if (!NM_STR_HAS_PREFIX(label, "unknown_"))
+        return -EINVAL;
 
-	label += NM_STRLEN  ("unknown_");
-	if (   label[0] != '2'
-	    || !g_ascii_isdigit (label[1])
-	    || !g_ascii_isdigit (label[2])
-	    || label[3] != '\0')
-		return -EINVAL;
+    label += NM_STRLEN("unknown_");
+    if (label[0] != '2' || !g_ascii_isdigit(label[1]) || !g_ascii_isdigit(label[2])
+        || label[3] != '\0')
+        return -EINVAL;
 
-	return _nm_utils_ascii_str_to_int64 (label, 10, 224, 254, -EINVAL);
+    return _nm_utils_ascii_str_to_int64(label, 10, 224, 254, -EINVAL);
 }
 
-
 #define OLD_TAG "old_"
 #define NEW_TAG "new_"
 
 static void
-maybe_add_option (NMDhcpClient *self,
-                  GHashTable *hash,
-                  const char *key,
-                  GVariant *value)
+maybe_add_option(NMDhcpClient *self, GHashTable *hash, const char *key, GVariant *value)
 {
-	char *str_value = NULL;
-
-	g_return_if_fail (g_variant_is_of_type (value, G_VARIANT_TYPE_BYTESTRING));
-
-	if (g_str_has_prefix (key, OLD_TAG))
-		return;
-
-	/* Filter out stuff that's not actually new DHCP options */
-	if (NM_IN_STRSET (key, "interface",
-	                       "pid",
-	                       "reason",
-	                       "dhcp_message_type"))
-		return;
-
-	if (NM_STR_HAS_PREFIX (key, NEW_TAG))
-		key += NM_STRLEN (NEW_TAG);
-	if (NM_STR_HAS_PREFIX (key, "private_") || !key[0])
-		return;
-
-	str_value = bytearray_variant_to_string (self, value, key);
-	if (str_value) {
-		int priv_opt_num;
-
-		g_hash_table_insert (hash, g_strdup (key), str_value);
-
-		/* dhclient has no special labels for private dhcp options: it uses "unknown_xyz"
-		 * labels for that. We need to identify those to alias them to our "private_xyz"
-		 * format unsed in the internal dchp plugins.
-		 */
-		if ((priv_opt_num = label_is_unknown_xyz (key)) > 0) {
-			gs_free guint8 *check_val = NULL;
-			char *hex_str = NULL;
-			gsize len;
-
-			/* dhclient passes values from dhcp private options in its own "string" format:
-			 * if the raw values are printable as ascii strings, it will pass the string
-			 * representation; if the values are not printable as an ascii string, it will
-			 * pass a string displaying the hex values (hex string). Try to enforce passing
-			 * always an hex string, converting string representation if needed.
-			 */
-			check_val = nm_utils_hexstr2bin_alloc (str_value, FALSE, TRUE, ":", 0, &len);
-			hex_str = nm_utils_bin2hexstr_full (check_val ?: (guint8 *) str_value,
-			                                    check_val ? len : strlen (str_value),
-			                                    ':', FALSE, NULL);
-			g_hash_table_insert (hash,
-			                     g_strdup_printf ("private_%d", priv_opt_num),
-			                     hex_str);
-		}
-	}
+    char *str_value = NULL;
+
+    g_return_if_fail(g_variant_is_of_type(value, G_VARIANT_TYPE_BYTESTRING));
+
+    if (g_str_has_prefix(key, OLD_TAG))
+        return;
+
+    /* Filter out stuff that's not actually new DHCP options */
+    if (NM_IN_STRSET(key, "interface", "pid", "reason", "dhcp_message_type"))
+        return;
+
+    if (NM_STR_HAS_PREFIX(key, NEW_TAG))
+        key += NM_STRLEN(NEW_TAG);
+    if (NM_STR_HAS_PREFIX(key, "private_") || !key[0])
+        return;
+
+    str_value = bytearray_variant_to_string(self, value, key);
+    if (str_value) {
+        int priv_opt_num;
+
+        g_hash_table_insert(hash, g_strdup(key), str_value);
+
+        /* dhclient has no special labels for private dhcp options: it uses "unknown_xyz"
+         * labels for that. We need to identify those to alias them to our "private_xyz"
+         * format unused in the internal dchp plugins.
+         */
+        if ((priv_opt_num = label_is_unknown_xyz(key)) > 0) {
+            gs_free guint8 *check_val = NULL;
+            char *          hex_str   = NULL;
+            gsize           len;
+
+            /* dhclient passes values from dhcp private options in its own "string" format:
+             * if the raw values are printable as ascii strings, it will pass the string
+             * representation; if the values are not printable as an ascii string, it will
+             * pass a string displaying the hex values (hex string). Try to enforce passing
+             * always an hex string, converting string representation if needed.
+             */
+            check_val = nm_utils_hexstr2bin_alloc(str_value, FALSE, TRUE, ":", 0, &len);
+            hex_str   = nm_utils_bin2hexstr_full(check_val ?: (guint8 *) str_value,
+                                               check_val ? len : strlen(str_value),
+                                               ':',
+                                               FALSE,
+                                               NULL);
+            g_hash_table_insert(hash, g_strdup_printf("private_%d", priv_opt_num), hex_str);
+        }
+    }
 }
 
 void
-nm_dhcp_client_emit_ipv6_prefix_delegated (NMDhcpClient *self,
-                                           const NMPlatformIP6Address *prefix)
+nm_dhcp_client_emit_ipv6_prefix_delegated(NMDhcpClient *self, const NMPlatformIP6Address *prefix)
+{
+    g_signal_emit(G_OBJECT(self), signals[SIGNAL_PREFIX_DELEGATED], 0, prefix);
+}
+
+gboolean
+nm_dhcp_client_handle_event(gpointer      unused,
+                            const char *  iface,
+                            int           pid,
+                            GVariant *    options,
+                            const char *  reason,
+                            NMDhcpClient *self)
 {
-	g_signal_emit (G_OBJECT (self),
-	               signals[SIGNAL_PREFIX_DELEGATED], 0,
-	               prefix);
+    NMDhcpClientPrivate *priv;
+    guint32              old_state;
+    guint32              new_state;
+    gs_unref_hashtable GHashTable *str_options = NULL;
+    gs_unref_object NMIPConfig *ip_config      = NULL;
+    NMPlatformIP6Address        prefix         = {
+        0,
+    };
+
+    g_return_val_if_fail(NM_IS_DHCP_CLIENT(self), FALSE);
+    g_return_val_if_fail(iface != NULL, FALSE);
+    g_return_val_if_fail(pid > 0, FALSE);
+    g_return_val_if_fail(g_variant_is_of_type(options, G_VARIANT_TYPE_VARDICT), FALSE);
+    g_return_val_if_fail(reason != NULL, FALSE);
+
+    priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
+
+    if (g_strcmp0(priv->iface, iface) != 0)
+        return FALSE;
+    if (priv->pid != pid)
+        return FALSE;
+
+    old_state = priv->state;
+    new_state = reason_to_state(self, priv->iface, reason);
+    _LOGD("DHCP state '%s' -> '%s' (reason: '%s')",
+          state_to_string(old_state),
+          state_to_string(new_state),
+          reason);
+
+    if (NM_IN_SET(new_state, NM_DHCP_STATE_BOUND, NM_DHCP_STATE_EXTENDED)) {
+        GVariantIter iter;
+        const char * name;
+        GVariant *   value;
+
+        /* Copy options */
+        str_options = g_hash_table_new_full(nm_str_hash, g_str_equal, g_free, g_free);
+        g_variant_iter_init(&iter, options);
+        while (g_variant_iter_next(&iter, "{&sv}", &name, &value)) {
+            maybe_add_option(self, str_options, name, value);
+            g_variant_unref(value);
+        }
+
+        /* Create the IP config */
+        if (g_hash_table_size(str_options) > 0) {
+            if (priv->addr_family == AF_INET) {
+                ip_config = NM_IP_CONFIG_CAST(
+                    nm_dhcp_utils_ip4_config_from_options(nm_dhcp_client_get_multi_idx(self),
+                                                          priv->ifindex,
+                                                          priv->iface,
+                                                          str_options,
+                                                          priv->route_table,
+                                                          priv->route_metric));
+            } else {
+                prefix    = nm_dhcp_utils_ip6_prefix_from_options(str_options);
+                ip_config = NM_IP_CONFIG_CAST(
+                    nm_dhcp_utils_ip6_config_from_options(nm_dhcp_client_get_multi_idx(self),
+                                                          priv->ifindex,
+                                                          priv->iface,
+                                                          str_options,
+                                                          priv->info_only));
+            }
+        } else
+            g_warn_if_reached();
+    }
+
+    if (!IN6_IS_ADDR_UNSPECIFIED(&prefix.address)) {
+        /* If we got an IPv6 prefix to delegate, we don't change the state
+         * of the DHCP client instance. Instead, we just signal the prefix
+         * to the device. */
+        nm_dhcp_client_emit_ipv6_prefix_delegated(self, &prefix);
+    } else {
+        /* Fail if no valid IP config was received */
+        if (NM_IN_SET(new_state, NM_DHCP_STATE_BOUND, NM_DHCP_STATE_EXTENDED) && !ip_config) {
+            _LOGW("client bound but IP config not received");
+            new_state = NM_DHCP_STATE_FAIL;
+            nm_clear_pointer(&str_options, g_hash_table_unref);
+        }
+
+        nm_dhcp_client_set_state(self, new_state, ip_config, str_options);
+    }
+
+    return TRUE;
 }
 
 gboolean
-nm_dhcp_client_handle_event (gpointer unused,
-                             const char *iface,
-                             int pid,
-                             GVariant *options,
-                             const char *reason,
-                             NMDhcpClient *self)
+nm_dhcp_client_server_id_is_rejected(NMDhcpClient *self, gconstpointer addr)
 {
-	NMDhcpClientPrivate *priv;
-	guint32 old_state;
-	guint32 new_state;
-	gs_unref_hashtable GHashTable *str_options = NULL;
-	gs_unref_object NMIPConfig *ip_config = NULL;
-	NMPlatformIP6Address prefix = { 0, };
-
-	g_return_val_if_fail (NM_IS_DHCP_CLIENT (self), FALSE);
-	g_return_val_if_fail (iface != NULL, FALSE);
-	g_return_val_if_fail (pid > 0, FALSE);
-	g_return_val_if_fail (g_variant_is_of_type (options, G_VARIANT_TYPE_VARDICT), FALSE);
-	g_return_val_if_fail (reason != NULL, FALSE);
-
-	priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
-
-	if (g_strcmp0 (priv->iface, iface) != 0)
-		return FALSE;
-	if (priv->pid != pid)
-		return FALSE;
-
-	old_state = priv->state;
-	new_state = reason_to_state (self, priv->iface, reason);
-	_LOGD ("DHCP state '%s' -> '%s' (reason: '%s')",
-	       state_to_string (old_state), state_to_string (new_state), reason);
-
-	if (NM_IN_SET (new_state, NM_DHCP_STATE_BOUND, NM_DHCP_STATE_EXTENDED)) {
-		GVariantIter iter;
-		const char *name;
-		GVariant *value;
-
-		/* Copy options */
-		str_options = g_hash_table_new_full (nm_str_hash, g_str_equal, g_free, g_free);
-		g_variant_iter_init (&iter, options);
-		while (g_variant_iter_next (&iter, "{&sv}", &name, &value)) {
-			maybe_add_option (self, str_options, name, value);
-			g_variant_unref (value);
-		}
-
-		/* Create the IP config */
-		if (g_hash_table_size (str_options) > 0) {
-			if (priv->addr_family == AF_INET) {
-				ip_config = NM_IP_CONFIG_CAST (nm_dhcp_utils_ip4_config_from_options (nm_dhcp_client_get_multi_idx (self),
-				                                                                      priv->ifindex,
-				                                                                      priv->iface,
-				                                                                      str_options,
-				                                                                      priv->route_table,
-				                                                                      priv->route_metric));
-			} else {
-				prefix = nm_dhcp_utils_ip6_prefix_from_options (str_options);
-				ip_config = NM_IP_CONFIG_CAST (nm_dhcp_utils_ip6_config_from_options (nm_dhcp_client_get_multi_idx (self),
-				                                                                      priv->ifindex,
-				                                                                      priv->iface,
-				                                                                      str_options,
-				                                                                      priv->info_only));
-			}
-		} else
-			g_warn_if_reached ();
-	}
-
-	if (!IN6_IS_ADDR_UNSPECIFIED (&prefix.address)) {
-		/* If we got an IPv6 prefix to delegate, we don't change the state
-		 * of the DHCP client instance. Instead, we just signal the prefix
-		 * to the device. */
-		nm_dhcp_client_emit_ipv6_prefix_delegated (self, &prefix);
-	} else {
-		/* Fail if no valid IP config was received */
-		if (   NM_IN_SET (new_state, NM_DHCP_STATE_BOUND, NM_DHCP_STATE_EXTENDED)
-		    && !ip_config) {
-			_LOGW ("client bound but IP config not received");
-			new_state = NM_DHCP_STATE_FAIL;
-			nm_clear_pointer (&str_options, g_hash_table_unref);
-		}
-
-		nm_dhcp_client_set_state (self, new_state, ip_config, str_options);
-	}
-
-	return TRUE;
+    NMDhcpClientPrivate *priv  = NM_DHCP_CLIENT_GET_PRIVATE(self);
+    in_addr_t            addr4 = *(in_addr_t *) addr;
+    guint                i;
+
+    /* IPv6 not implemented yet */
+    nm_assert(priv->addr_family == AF_INET);
+
+    if (!priv->reject_servers || !priv->reject_servers[0])
+        return FALSE;
+
+    for (i = 0; priv->reject_servers[i]; i++) {
+        in_addr_t r_addr;
+        in_addr_t mask;
+        int       r_prefix;
+
+        if (!nm_utils_parse_inaddr_prefix_bin(AF_INET,
+                                              priv->reject_servers[i],
+                                              NULL,
+                                              &r_addr,
+                                              &r_prefix))
+            nm_assert_not_reached();
+        mask = _nm_utils_ip4_prefix_to_netmask(r_prefix < 0 ? 32 : r_prefix);
+        if ((addr4 & mask) == (r_addr & mask))
+            return TRUE;
+    }
+
+    return FALSE;
 }
 
 /*****************************************************************************/
 
 static void
-get_property (GObject *object, guint prop_id,
-              GValue *value, GParamSpec *pspec)
+get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
 {
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (object);
-
-	switch (prop_id) {
-	case PROP_IFACE:
-		g_value_set_string (value, priv->iface);
-		break;
-	case PROP_IFINDEX:
-		g_value_set_int (value, priv->ifindex);
-		break;
-	case PROP_HWADDR:
-		g_value_set_boxed (value, priv->hwaddr);
-		break;
-	case PROP_BROADCAST_HWADDR:
-		g_value_set_boxed (value, priv->bcast_hwaddr);
-		break;
-	case PROP_ADDR_FAMILY:
-		g_value_set_int (value, priv->addr_family);
-		break;
-	case PROP_UUID:
-		g_value_set_string (value, priv->uuid);
-		break;
-	case PROP_IAID:
-		g_value_set_uint (value, priv->iaid);
-		break;
-	case PROP_IAID_EXPLICIT:
-		g_value_set_boolean (value, priv->iaid_explicit);
-		break;
-	case PROP_HOSTNAME:
-		g_value_set_string (value, priv->hostname);
-		break;
-	case PROP_ROUTE_METRIC:
-		g_value_set_uint (value, priv->route_metric);
-		break;
-	case PROP_ROUTE_TABLE:
-		g_value_set_uint (value, priv->route_table);
-		break;
-	case PROP_TIMEOUT:
-		g_value_set_uint (value, priv->timeout);
-		break;
-	default:
-		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-		break;
-	}
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(object);
+
+    switch (prop_id) {
+    case PROP_IFACE:
+        g_value_set_string(value, priv->iface);
+        break;
+    case PROP_IFINDEX:
+        g_value_set_int(value, priv->ifindex);
+        break;
+    case PROP_HWADDR:
+        g_value_set_boxed(value, priv->hwaddr);
+        break;
+    case PROP_BROADCAST_HWADDR:
+        g_value_set_boxed(value, priv->bcast_hwaddr);
+        break;
+    case PROP_ADDR_FAMILY:
+        g_value_set_int(value, priv->addr_family);
+        break;
+    case PROP_UUID:
+        g_value_set_string(value, priv->uuid);
+        break;
+    case PROP_IAID:
+        g_value_set_uint(value, priv->iaid);
+        break;
+    case PROP_IAID_EXPLICIT:
+        g_value_set_boolean(value, priv->iaid_explicit);
+        break;
+    case PROP_HOSTNAME:
+        g_value_set_string(value, priv->hostname);
+        break;
+    case PROP_ROUTE_METRIC:
+        g_value_set_uint(value, priv->route_metric);
+        break;
+    case PROP_ROUTE_TABLE:
+        g_value_set_uint(value, priv->route_table);
+        break;
+    case PROP_TIMEOUT:
+        g_value_set_uint(value, priv->timeout);
+        break;
+    default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
+        break;
+    }
 }
 
 static void
-set_property (GObject *object, guint prop_id,
-              const GValue *value, GParamSpec *pspec)
+set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
 {
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (object);
-	guint flags;
-
-	switch (prop_id) {
-	case PROP_FLAGS:
-		/* construct-only */
-		flags = g_value_get_uint (value);
-		nm_assert ((flags & ~((guint) (NM_DHCP_CLIENT_FLAGS_INFO_ONLY | NM_DHCP_CLIENT_FLAGS_USE_FQDN))) == 0);
-		priv->info_only = NM_FLAGS_HAS (flags, NM_DHCP_CLIENT_FLAGS_INFO_ONLY);
-		priv->use_fqdn = NM_FLAGS_HAS (flags, NM_DHCP_CLIENT_FLAGS_USE_FQDN);
-		break;
-	case PROP_MULTI_IDX:
-		/* construct-only */
-		priv->multi_idx = g_value_get_pointer (value);
-		if (!priv->multi_idx)
-			g_return_if_reached ();
-		nm_dedup_multi_index_ref (priv->multi_idx);
-		break;
-	case PROP_IFACE:
-		/* construct-only */
-		priv->iface = g_value_dup_string (value);
-		g_return_if_fail (priv->iface);
-		nm_assert (nm_utils_ifname_valid_kernel (priv->iface, NULL));
-		break;
-	case PROP_IFINDEX:
-		/* construct-only */
-		priv->ifindex = g_value_get_int (value);
-		g_return_if_fail (priv->ifindex > 0);
-		break;
-	case PROP_HWADDR:
-		/* construct-only */
-		priv->hwaddr = g_value_dup_boxed (value);
-		break;
-	case PROP_BROADCAST_HWADDR:
-		/* construct-only */
-		priv->bcast_hwaddr = g_value_dup_boxed (value);
-		break;
-	case PROP_ADDR_FAMILY:
-		/* construct-only */
-		priv->addr_family = g_value_get_int (value);
-		if (!NM_IN_SET (priv->addr_family, AF_INET, AF_INET6))
-			g_return_if_reached ();
-		break;
-	case PROP_UUID:
-		/* construct-only */
-		priv->uuid = g_value_dup_string (value);
-		break;
-	case PROP_IAID:
-		/* construct-only */
-		priv->iaid = g_value_get_uint (value);
-		break;
-	case PROP_IAID_EXPLICIT:
-		/* construct-only */
-		priv->iaid_explicit = g_value_get_boolean (value);
-		break;
-	case PROP_HOSTNAME:
-		/* construct-only */
-		priv->hostname = g_value_dup_string (value);
-		break;
-	case PROP_HOSTNAME_FLAGS:
-		/* construct-only */
-		priv->hostname_flags = g_value_get_uint (value);
-		break;
-	case PROP_MUD_URL:
-		/* construct-only */
-		priv->mud_url = g_value_dup_string (value);
-		break;
-	case PROP_ROUTE_TABLE:
-		priv->route_table = g_value_get_uint (value);
-		break;
-	case PROP_ROUTE_METRIC:
-		priv->route_metric = g_value_get_uint (value);
-		break;
-	case PROP_TIMEOUT:
-		/* construct-only */
-		priv->timeout = g_value_get_uint (value);
-		break;
-	default:
-		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-		break;
-	}
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(object);
+    guint                flags;
+
+    switch (prop_id) {
+    case PROP_FLAGS:
+        /* construct-only */
+        flags = g_value_get_uint(value);
+        nm_assert(
+            (flags & ~((guint)(NM_DHCP_CLIENT_FLAGS_INFO_ONLY | NM_DHCP_CLIENT_FLAGS_USE_FQDN)))
+            == 0);
+        priv->info_only = NM_FLAGS_HAS(flags, NM_DHCP_CLIENT_FLAGS_INFO_ONLY);
+        priv->use_fqdn  = NM_FLAGS_HAS(flags, NM_DHCP_CLIENT_FLAGS_USE_FQDN);
+        break;
+    case PROP_MULTI_IDX:
+        /* construct-only */
+        priv->multi_idx = g_value_get_pointer(value);
+        if (!priv->multi_idx)
+            g_return_if_reached();
+        nm_dedup_multi_index_ref(priv->multi_idx);
+        break;
+    case PROP_IFACE:
+        /* construct-only */
+        priv->iface = g_value_dup_string(value);
+        g_return_if_fail(priv->iface);
+        nm_assert(nm_utils_ifname_valid_kernel(priv->iface, NULL));
+        break;
+    case PROP_IFINDEX:
+        /* construct-only */
+        priv->ifindex = g_value_get_int(value);
+        g_return_if_fail(priv->ifindex > 0);
+        break;
+    case PROP_HWADDR:
+        /* construct-only */
+        priv->hwaddr = g_value_dup_boxed(value);
+        break;
+    case PROP_BROADCAST_HWADDR:
+        /* construct-only */
+        priv->bcast_hwaddr = g_value_dup_boxed(value);
+        break;
+    case PROP_ADDR_FAMILY:
+        /* construct-only */
+        priv->addr_family = g_value_get_int(value);
+        if (!NM_IN_SET(priv->addr_family, AF_INET, AF_INET6))
+            g_return_if_reached();
+        break;
+    case PROP_UUID:
+        /* construct-only */
+        priv->uuid = g_value_dup_string(value);
+        break;
+    case PROP_IAID:
+        /* construct-only */
+        priv->iaid = g_value_get_uint(value);
+        break;
+    case PROP_IAID_EXPLICIT:
+        /* construct-only */
+        priv->iaid_explicit = g_value_get_boolean(value);
+        break;
+    case PROP_HOSTNAME:
+        /* construct-only */
+        priv->hostname = g_value_dup_string(value);
+        break;
+    case PROP_HOSTNAME_FLAGS:
+        /* construct-only */
+        priv->hostname_flags = g_value_get_uint(value);
+        break;
+    case PROP_MUD_URL:
+        /* construct-only */
+        priv->mud_url = g_value_dup_string(value);
+        break;
+    case PROP_ROUTE_TABLE:
+        priv->route_table = g_value_get_uint(value);
+        break;
+    case PROP_ROUTE_METRIC:
+        priv->route_metric = g_value_get_uint(value);
+        break;
+    case PROP_TIMEOUT:
+        /* construct-only */
+        priv->timeout = g_value_get_uint(value);
+        break;
+    case PROP_VENDOR_CLASS_IDENTIFIER:
+        /* construct-only */
+        priv->vendor_class_identifier = g_value_dup_boxed(value);
+        break;
+    case PROP_REJECT_SERVERS:
+        /* construct-only */
+        priv->reject_servers = nm_utils_strv_dup_packed(g_value_get_boxed(value), -1);
+        break;
+    default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
+        break;
+    }
 }
 
 /*****************************************************************************/
 
 static void
-nm_dhcp_client_init (NMDhcpClient *self)
+nm_dhcp_client_init(NMDhcpClient *self)
 {
-	NMDhcpClientPrivate *priv;
+    NMDhcpClientPrivate *priv;
 
-	priv = G_TYPE_INSTANCE_GET_PRIVATE (self, NM_TYPE_DHCP_CLIENT, NMDhcpClientPrivate);
-	self->_priv = priv;
+    priv        = G_TYPE_INSTANCE_GET_PRIVATE(self, NM_TYPE_DHCP_CLIENT, NMDhcpClientPrivate);
+    self->_priv = priv;
 
-	c_list_init (&self->dhcp_client_lst);
+    c_list_init(&self->dhcp_client_lst);
 
-	priv->pid = -1;
+    priv->pid = -1;
 }
 
 static void
-dispose (GObject *object)
+dispose(GObject *object)
 {
-	NMDhcpClient *self = NM_DHCP_CLIENT (object);
-	NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE (self);
+    NMDhcpClient *       self = NM_DHCP_CLIENT(object);
+    NMDhcpClientPrivate *priv = NM_DHCP_CLIENT_GET_PRIVATE(self);
 
-	/* Stopping the client is left up to the controlling device
-	 * explicitly since we may want to quit NetworkManager but not terminate
-	 * the DHCP client.
-	 */
+    /* Stopping the client is left up to the controlling device
+     * explicitly since we may want to quit NetworkManager but not terminate
+     * the DHCP client.
+     */
 
-	nm_assert (c_list_is_empty (&self->dhcp_client_lst));
+    nm_assert(c_list_is_empty(&self->dhcp_client_lst));
 
-	watch_cleanup (self);
-	timeout_cleanup (self);
+    watch_cleanup(self);
+    timeout_cleanup(self);
 
-	nm_clear_g_free (&priv->iface);
-	nm_clear_g_free (&priv->hostname);
-	nm_clear_g_free (&priv->uuid);
-	nm_clear_g_free (&priv->mud_url);
-	nm_clear_pointer (&priv->client_id, g_bytes_unref);
-	nm_clear_pointer (&priv->hwaddr, g_bytes_unref);
-	nm_clear_pointer (&priv->bcast_hwaddr, g_bytes_unref);
+    nm_clear_g_free(&priv->iface);
+    nm_clear_g_free(&priv->hostname);
+    nm_clear_g_free(&priv->uuid);
+    nm_clear_g_free(&priv->mud_url);
+    nm_clear_g_free(&priv->reject_servers);
+    nm_clear_pointer(&priv->client_id, g_bytes_unref);
+    nm_clear_pointer(&priv->hwaddr, g_bytes_unref);
+    nm_clear_pointer(&priv->bcast_hwaddr, g_bytes_unref);
+    nm_clear_pointer(&priv->vendor_class_identifier, g_bytes_unref);
 
-	G_OBJECT_CLASS (nm_dhcp_client_parent_class)->dispose (object);
+    G_OBJECT_CLASS(nm_dhcp_client_parent_class)->dispose(object);
 
-	priv->multi_idx = nm_dedup_multi_index_unref (priv->multi_idx);
+    priv->multi_idx = nm_dedup_multi_index_unref(priv->multi_idx);
 }
 
 static void
-nm_dhcp_client_class_init (NMDhcpClientClass *client_class)
+nm_dhcp_client_class_init(NMDhcpClientClass *client_class)
 {
-	GObjectClass *object_class = G_OBJECT_CLASS (client_class);
-
-	g_type_class_add_private (client_class, sizeof (NMDhcpClientPrivate));
-
-	object_class->dispose = dispose;
-	object_class->get_property = get_property;
-	object_class->set_property = set_property;
-
-	client_class->stop = stop;
-	client_class->get_duid = get_duid;
-
-	obj_properties[PROP_MULTI_IDX] =
-	    g_param_spec_pointer (NM_DHCP_CLIENT_MULTI_IDX, "", "",
-	                            G_PARAM_WRITABLE
-	                          | G_PARAM_CONSTRUCT_ONLY
-	                          | G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_IFACE] =
-	    g_param_spec_string (NM_DHCP_CLIENT_INTERFACE, "", "",
-	                         NULL,
-	                         G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
-	                         G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_IFINDEX] =
-	    g_param_spec_int (NM_DHCP_CLIENT_IFINDEX, "", "",
-	                      -1, G_MAXINT, -1,
-	                      G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
-	                      G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_HWADDR] =
-	    g_param_spec_boxed (NM_DHCP_CLIENT_HWADDR, "", "",
-	                        G_TYPE_BYTES,
-	                        G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
-	                        G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_BROADCAST_HWADDR] =
-	    g_param_spec_boxed (NM_DHCP_CLIENT_BROADCAST_HWADDR, "", "",
-	                        G_TYPE_BYTES,
-	                        G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
-	                        G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_ADDR_FAMILY] =
-	    g_param_spec_int (NM_DHCP_CLIENT_ADDR_FAMILY, "", "",
-	                      0, G_MAXINT, AF_UNSPEC,
-	                      G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
-	                      G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_UUID] =
-	    g_param_spec_string (NM_DHCP_CLIENT_UUID, "", "",
-	                         NULL,
-	                         G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
-	                         G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_IAID] =
-	    g_param_spec_uint (NM_DHCP_CLIENT_IAID, "", "",
-	                       0, G_MAXUINT32, 0,
-	                       G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
-	                       G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_IAID_EXPLICIT] =
-	    g_param_spec_boolean (NM_DHCP_CLIENT_IAID_EXPLICIT, "", "",
-	                          FALSE,
-	                          G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
-	                          G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_HOSTNAME] =
-	    g_param_spec_string (NM_DHCP_CLIENT_HOSTNAME, "", "",
-	                         NULL,
-	                         G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
-	                         G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_HOSTNAME_FLAGS] =
-	    g_param_spec_uint (NM_DHCP_CLIENT_HOSTNAME_FLAGS, "", "",
-	                       0, G_MAXUINT32, NM_DHCP_HOSTNAME_FLAG_NONE,
-	                       G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY |
-	                       G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_MUD_URL] =
-	    g_param_spec_string (NM_DHCP_CLIENT_MUD_URL, "", "",
-	                         NULL,
-	                         G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY |
-	                         G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_ROUTE_TABLE] =
-	    g_param_spec_uint (NM_DHCP_CLIENT_ROUTE_TABLE, "", "",
-	                       0, G_MAXUINT32, RT_TABLE_MAIN,
-	                       G_PARAM_READWRITE |
-	                       G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_ROUTE_METRIC] =
-	    g_param_spec_uint (NM_DHCP_CLIENT_ROUTE_METRIC, "", "",
-	                       0, G_MAXUINT32, 0,
-	                       G_PARAM_READWRITE |
-	                       G_PARAM_STATIC_STRINGS);
-
-	G_STATIC_ASSERT_EXPR (G_MAXINT32 == NM_DHCP_TIMEOUT_INFINITY);
-	obj_properties[PROP_TIMEOUT] =
-	    g_param_spec_uint (NM_DHCP_CLIENT_TIMEOUT, "", "",
-	                       1, G_MAXINT32, NM_DHCP_TIMEOUT_DEFAULT,
-	                       G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
-	                       G_PARAM_STATIC_STRINGS);
-
-	obj_properties[PROP_FLAGS] =
-	    g_param_spec_uint (NM_DHCP_CLIENT_FLAGS, "", "",
-	                       0, G_MAXUINT32, 0,
-	                       G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY |
-	                       G_PARAM_STATIC_STRINGS);
-
-	g_object_class_install_properties (object_class, _PROPERTY_ENUMS_LAST, obj_properties);
-
-	signals[SIGNAL_STATE_CHANGED] =
-	    g_signal_new (NM_DHCP_CLIENT_SIGNAL_STATE_CHANGED,
-	                  G_OBJECT_CLASS_TYPE (object_class),
-	                  G_SIGNAL_RUN_FIRST,
-	                  0,
-	                  NULL, NULL, NULL,
-	                  G_TYPE_NONE, 4, G_TYPE_UINT, G_TYPE_OBJECT, G_TYPE_HASH_TABLE, G_TYPE_STRING);
-
-	signals[SIGNAL_PREFIX_DELEGATED] =
-	    g_signal_new (NM_DHCP_CLIENT_SIGNAL_PREFIX_DELEGATED,
-	                  G_OBJECT_CLASS_TYPE (object_class),
-	                  G_SIGNAL_RUN_FIRST,
-	                  0,
-	                  NULL, NULL, NULL,
-	                  G_TYPE_NONE, 1, G_TYPE_POINTER);
+    GObjectClass *object_class = G_OBJECT_CLASS(client_class);
+
+    g_type_class_add_private(client_class, sizeof(NMDhcpClientPrivate));
+
+    object_class->dispose      = dispose;
+    object_class->get_property = get_property;
+    object_class->set_property = set_property;
+
+    client_class->stop     = stop;
+    client_class->get_duid = get_duid;
+
+    obj_properties[PROP_MULTI_IDX] =
+        g_param_spec_pointer(NM_DHCP_CLIENT_MULTI_IDX,
+                             "",
+                             "",
+                             G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_IFACE] =
+        g_param_spec_string(NM_DHCP_CLIENT_INTERFACE,
+                            "",
+                            "",
+                            NULL,
+                            G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_IFINDEX] =
+        g_param_spec_int(NM_DHCP_CLIENT_IFINDEX,
+                         "",
+                         "",
+                         -1,
+                         G_MAXINT,
+                         -1,
+                         G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_HWADDR] =
+        g_param_spec_boxed(NM_DHCP_CLIENT_HWADDR,
+                           "",
+                           "",
+                           G_TYPE_BYTES,
+                           G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_BROADCAST_HWADDR] =
+        g_param_spec_boxed(NM_DHCP_CLIENT_BROADCAST_HWADDR,
+                           "",
+                           "",
+                           G_TYPE_BYTES,
+                           G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_ADDR_FAMILY] =
+        g_param_spec_int(NM_DHCP_CLIENT_ADDR_FAMILY,
+                         "",
+                         "",
+                         0,
+                         G_MAXINT,
+                         AF_UNSPEC,
+                         G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_UUID] =
+        g_param_spec_string(NM_DHCP_CLIENT_UUID,
+                            "",
+                            "",
+                            NULL,
+                            G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_IAID] =
+        g_param_spec_uint(NM_DHCP_CLIENT_IAID,
+                          "",
+                          "",
+                          0,
+                          G_MAXUINT32,
+                          0,
+                          G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_IAID_EXPLICIT] =
+        g_param_spec_boolean(NM_DHCP_CLIENT_IAID_EXPLICIT,
+                             "",
+                             "",
+                             FALSE,
+                             G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_HOSTNAME] =
+        g_param_spec_string(NM_DHCP_CLIENT_HOSTNAME,
+                            "",
+                            "",
+                            NULL,
+                            G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_HOSTNAME_FLAGS] =
+        g_param_spec_uint(NM_DHCP_CLIENT_HOSTNAME_FLAGS,
+                          "",
+                          "",
+                          0,
+                          G_MAXUINT32,
+                          NM_DHCP_HOSTNAME_FLAG_NONE,
+                          G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_MUD_URL] =
+        g_param_spec_string(NM_DHCP_CLIENT_MUD_URL,
+                            "",
+                            "",
+                            NULL,
+                            G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_ROUTE_TABLE] =
+        g_param_spec_uint(NM_DHCP_CLIENT_ROUTE_TABLE,
+                          "",
+                          "",
+                          0,
+                          G_MAXUINT32,
+                          RT_TABLE_MAIN,
+                          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_ROUTE_METRIC] =
+        g_param_spec_uint(NM_DHCP_CLIENT_ROUTE_METRIC,
+                          "",
+                          "",
+                          0,
+                          G_MAXUINT32,
+                          0,
+                          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+
+    G_STATIC_ASSERT_EXPR(G_MAXINT32 == NM_DHCP_TIMEOUT_INFINITY);
+    obj_properties[PROP_TIMEOUT] =
+        g_param_spec_uint(NM_DHCP_CLIENT_TIMEOUT,
+                          "",
+                          "",
+                          1,
+                          G_MAXINT32,
+                          NM_DHCP_TIMEOUT_DEFAULT,
+                          G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_FLAGS] =
+        g_param_spec_uint(NM_DHCP_CLIENT_FLAGS,
+                          "",
+                          "",
+                          0,
+                          G_MAXUINT32,
+                          0,
+                          G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_VENDOR_CLASS_IDENTIFIER] =
+        g_param_spec_boxed(NM_DHCP_CLIENT_VENDOR_CLASS_IDENTIFIER,
+                           "",
+                           "",
+                           G_TYPE_BYTES,
+                           G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    obj_properties[PROP_REJECT_SERVERS] =
+        g_param_spec_boxed(NM_DHCP_CLIENT_REJECT_SERVERS,
+                           "",
+                           "",
+                           G_TYPE_STRV,
+                           G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+    g_object_class_install_properties(object_class, _PROPERTY_ENUMS_LAST, obj_properties);
+
+    signals[SIGNAL_STATE_CHANGED] = g_signal_new(NM_DHCP_CLIENT_SIGNAL_STATE_CHANGED,
+                                                 G_OBJECT_CLASS_TYPE(object_class),
+                                                 G_SIGNAL_RUN_FIRST,
+                                                 0,
+                                                 NULL,
+                                                 NULL,
+                                                 NULL,
+                                                 G_TYPE_NONE,
+                                                 3,
+                                                 G_TYPE_UINT,
+                                                 G_TYPE_OBJECT,
+                                                 G_TYPE_HASH_TABLE);
+
+    signals[SIGNAL_PREFIX_DELEGATED] = g_signal_new(NM_DHCP_CLIENT_SIGNAL_PREFIX_DELEGATED,
+                                                    G_OBJECT_CLASS_TYPE(object_class),
+                                                    G_SIGNAL_RUN_FIRST,
+                                                    0,
+                                                    NULL,
+                                                    NULL,
+                                                    NULL,
+                                                    G_TYPE_NONE,
+                                                    1,
+                                                    G_TYPE_POINTER);
 }
diff --git a/src/dhcp/nm-dhcp-client.h b/src/dhcp/nm-dhcp-client.h
index 479ea000..05faa9ea 100644
--- a/src/dhcp/nm-dhcp-client.h
+++ b/src/dhcp/nm-dhcp-client.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2005 - 2010 Red Hat, Inc.
  */
@@ -15,209 +15,210 @@
 #define NM_DHCP_TIMEOUT_DEFAULT  ((guint32) 45) /* default DHCP timeout, in seconds */
 #define NM_DHCP_TIMEOUT_INFINITY ((guint32) G_MAXINT32)
 
-#define NM_TYPE_DHCP_CLIENT            (nm_dhcp_client_get_type ())
-#define NM_DHCP_CLIENT(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_DHCP_CLIENT, NMDhcpClient))
-#define NM_DHCP_CLIENT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_DHCP_CLIENT, NMDhcpClientClass))
-#define NM_IS_DHCP_CLIENT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_DHCP_CLIENT))
-#define NM_IS_DHCP_CLIENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_DHCP_CLIENT))
-#define NM_DHCP_CLIENT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_DHCP_CLIENT, NMDhcpClientClass))
-
-#define NM_DHCP_CLIENT_ADDR_FAMILY      "addr-family"
-#define NM_DHCP_CLIENT_FLAGS            "flags"
-#define NM_DHCP_CLIENT_HWADDR           "hwaddr"
-#define NM_DHCP_CLIENT_BROADCAST_HWADDR "broadcast-hwaddr"
-#define NM_DHCP_CLIENT_IFINDEX          "ifindex"
-#define NM_DHCP_CLIENT_INTERFACE        "iface"
-#define NM_DHCP_CLIENT_MULTI_IDX        "multi-idx"
-#define NM_DHCP_CLIENT_HOSTNAME         "hostname"
-#define NM_DHCP_CLIENT_MUD_URL          "mud-url"
-#define NM_DHCP_CLIENT_ROUTE_METRIC     "route-metric"
-#define NM_DHCP_CLIENT_ROUTE_TABLE      "route-table"
-#define NM_DHCP_CLIENT_TIMEOUT          "timeout"
-#define NM_DHCP_CLIENT_UUID             "uuid"
-#define NM_DHCP_CLIENT_IAID             "iaid"
-#define NM_DHCP_CLIENT_IAID_EXPLICIT    "iaid-explicit"
-#define NM_DHCP_CLIENT_HOSTNAME_FLAGS   "hostname-flags"
-
-#define NM_DHCP_CLIENT_SIGNAL_STATE_CHANGED "state-changed"
+#define NM_TYPE_DHCP_CLIENT (nm_dhcp_client_get_type())
+#define NM_DHCP_CLIENT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_DHCP_CLIENT, NMDhcpClient))
+#define NM_DHCP_CLIENT_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), NM_TYPE_DHCP_CLIENT, NMDhcpClientClass))
+#define NM_IS_DHCP_CLIENT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_DHCP_CLIENT))
+#define NM_IS_DHCP_CLIENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), NM_TYPE_DHCP_CLIENT))
+#define NM_DHCP_CLIENT_GET_CLASS(obj) \
+    (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_DHCP_CLIENT, NMDhcpClientClass))
+
+#define NM_DHCP_CLIENT_ADDR_FAMILY             "addr-family"
+#define NM_DHCP_CLIENT_FLAGS                   "flags"
+#define NM_DHCP_CLIENT_HWADDR                  "hwaddr"
+#define NM_DHCP_CLIENT_BROADCAST_HWADDR        "broadcast-hwaddr"
+#define NM_DHCP_CLIENT_IFINDEX                 "ifindex"
+#define NM_DHCP_CLIENT_INTERFACE               "iface"
+#define NM_DHCP_CLIENT_MULTI_IDX               "multi-idx"
+#define NM_DHCP_CLIENT_HOSTNAME                "hostname"
+#define NM_DHCP_CLIENT_MUD_URL                 "mud-url"
+#define NM_DHCP_CLIENT_ROUTE_METRIC            "route-metric"
+#define NM_DHCP_CLIENT_ROUTE_TABLE             "route-table"
+#define NM_DHCP_CLIENT_TIMEOUT                 "timeout"
+#define NM_DHCP_CLIENT_UUID                    "uuid"
+#define NM_DHCP_CLIENT_IAID                    "iaid"
+#define NM_DHCP_CLIENT_IAID_EXPLICIT           "iaid-explicit"
+#define NM_DHCP_CLIENT_HOSTNAME_FLAGS          "hostname-flags"
+#define NM_DHCP_CLIENT_VENDOR_CLASS_IDENTIFIER "vendor-class-identifier"
+#define NM_DHCP_CLIENT_REJECT_SERVERS          "reject-servers"
+
+#define NM_DHCP_CLIENT_SIGNAL_STATE_CHANGED    "state-changed"
 #define NM_DHCP_CLIENT_SIGNAL_PREFIX_DELEGATED "prefix-delegated"
 
 typedef enum {
-	NM_DHCP_STATE_UNKNOWN = 0,
-	NM_DHCP_STATE_BOUND,        /* new lease */
-	NM_DHCP_STATE_EXTENDED,     /* lease extended */
-	NM_DHCP_STATE_TIMEOUT,      /* timed out contacting server */
-	NM_DHCP_STATE_DONE,         /* client quit or stopped */
-	NM_DHCP_STATE_EXPIRE,       /* lease expired or NAKed */
-	NM_DHCP_STATE_FAIL,         /* failed for some reason */
-	NM_DHCP_STATE_TERMINATED,   /* client is no longer running */
-	__NM_DHCP_STATE_MAX,
-	NM_DHCP_STATE_MAX = __NM_DHCP_STATE_MAX - 1,
+    NM_DHCP_STATE_UNKNOWN = 0,
+    NM_DHCP_STATE_BOUND,      /* new lease */
+    NM_DHCP_STATE_EXTENDED,   /* lease extended */
+    NM_DHCP_STATE_TIMEOUT,    /* timed out contacting server */
+    NM_DHCP_STATE_DONE,       /* client quit or stopped */
+    NM_DHCP_STATE_EXPIRE,     /* lease expired or NAKed */
+    NM_DHCP_STATE_FAIL,       /* failed for some reason */
+    NM_DHCP_STATE_TERMINATED, /* client is no longer running */
+    __NM_DHCP_STATE_MAX,
+    NM_DHCP_STATE_MAX = __NM_DHCP_STATE_MAX - 1,
 } NMDhcpState;
 
 struct _NMDhcpClientPrivate;
 
 typedef struct {
-	GObject parent;
-	struct _NMDhcpClientPrivate *_priv;
-	CList dhcp_client_lst;
+    GObject                      parent;
+    struct _NMDhcpClientPrivate *_priv;
+    CList                        dhcp_client_lst;
 } NMDhcpClient;
 
 typedef enum {
-	NM_DHCP_CLIENT_FLAGS_INFO_ONLY = (1LL <<  0),
-	NM_DHCP_CLIENT_FLAGS_USE_FQDN  = (1LL <<  1),
+    NM_DHCP_CLIENT_FLAGS_INFO_ONLY = (1LL << 0),
+    NM_DHCP_CLIENT_FLAGS_USE_FQDN  = (1LL << 1),
 } NMDhcpClientFlags;
 
 typedef struct {
-	GObjectClass parent;
-
-	gboolean (*ip4_start)     (NMDhcpClient *self,
-	                           const char *anycast_addr,
-	                           const char *last_ip4_address,
-	                           GError **error);
-
-	gboolean (*accept)        (NMDhcpClient *self,
-	                           GError **error);
-
-	gboolean (*decline)       (NMDhcpClient *self,
-	                           const char *error_message,
-	                           GError **error);
-
-	gboolean (*ip6_start)     (NMDhcpClient *self,
-	                           const char *anycast_addr,
-	                           const struct in6_addr *ll_addr,
-	                           NMSettingIP6ConfigPrivacy privacy,
-	                           guint needed_prefixes,
-	                           GError **error);
-
-	void (*stop)              (NMDhcpClient *self,
-	                           gboolean release);
-
-	/**
-	 * get_duid:
-	 * @self: the #NMDhcpClient
-	 *
-	 * Attempts to find an existing DHCPv6 DUID for this client in the DHCP
-	 * client's persistent configuration.  Returned DUID should be the binary
-	 * representation of the DUID.  If no DUID is found, %NULL should be
-	 * returned.
-	 */
-	GBytes *(*get_duid) (NMDhcpClient *self);
+    GObjectClass parent;
+
+    gboolean (*ip4_start)(NMDhcpClient *self,
+                          const char *  anycast_addr,
+                          const char *  last_ip4_address,
+                          GError **     error);
+
+    gboolean (*accept)(NMDhcpClient *self, GError **error);
+
+    gboolean (*decline)(NMDhcpClient *self, const char *error_message, GError **error);
+
+    gboolean (*ip6_start)(NMDhcpClient *            self,
+                          const char *              anycast_addr,
+                          const struct in6_addr *   ll_addr,
+                          NMSettingIP6ConfigPrivacy privacy,
+                          guint                     needed_prefixes,
+                          GError **                 error);
+
+    void (*stop)(NMDhcpClient *self, gboolean release);
+
+    /**
+     * get_duid:
+     * @self: the #NMDhcpClient
+     *
+     * Attempts to find an existing DHCPv6 DUID for this client in the DHCP
+     * client's persistent configuration.  Returned DUID should be the binary
+     * representation of the DUID.  If no DUID is found, %NULL should be
+     * returned.
+     */
+    GBytes *(*get_duid)(NMDhcpClient *self);
 } NMDhcpClientClass;
 
-GType nm_dhcp_client_get_type (void);
+GType nm_dhcp_client_get_type(void);
 
-struct _NMDedupMultiIndex *nm_dhcp_client_get_multi_idx (NMDhcpClient *self);
+struct _NMDedupMultiIndex *nm_dhcp_client_get_multi_idx(NMDhcpClient *self);
 
-pid_t nm_dhcp_client_get_pid (NMDhcpClient *self);
+pid_t nm_dhcp_client_get_pid(NMDhcpClient *self);
 
-int nm_dhcp_client_get_addr_family (NMDhcpClient *self);
+int nm_dhcp_client_get_addr_family(NMDhcpClient *self);
 
-const char *nm_dhcp_client_get_iface (NMDhcpClient *self);
+const char *nm_dhcp_client_get_iface(NMDhcpClient *self);
 
-int         nm_dhcp_client_get_ifindex (NMDhcpClient *self);
+int nm_dhcp_client_get_ifindex(NMDhcpClient *self);
 
-const char *nm_dhcp_client_get_uuid (NMDhcpClient *self);
+const char *nm_dhcp_client_get_uuid(NMDhcpClient *self);
 
-GBytes *nm_dhcp_client_get_duid (NMDhcpClient *self);
+GBytes *nm_dhcp_client_get_duid(NMDhcpClient *self);
 
-GBytes *nm_dhcp_client_get_hw_addr (NMDhcpClient *self);
+GBytes *nm_dhcp_client_get_hw_addr(NMDhcpClient *self);
 
-GBytes *nm_dhcp_client_get_broadcast_hw_addr (NMDhcpClient *self);
+GBytes *nm_dhcp_client_get_broadcast_hw_addr(NMDhcpClient *self);
 
-guint32 nm_dhcp_client_get_route_table (NMDhcpClient *self);
+guint32 nm_dhcp_client_get_route_table(NMDhcpClient *self);
 
-void nm_dhcp_client_set_route_table (NMDhcpClient *self, guint32 route_table);
+void nm_dhcp_client_set_route_table(NMDhcpClient *self, guint32 route_table);
 
-guint32 nm_dhcp_client_get_route_metric (NMDhcpClient *self);
+guint32 nm_dhcp_client_get_route_metric(NMDhcpClient *self);
 
-void nm_dhcp_client_set_route_metric (NMDhcpClient *self, guint32 route_metric);
+void nm_dhcp_client_set_route_metric(NMDhcpClient *self, guint32 route_metric);
 
-guint32 nm_dhcp_client_get_timeout (NMDhcpClient *self);
+guint32 nm_dhcp_client_get_timeout(NMDhcpClient *self);
 
-guint32 nm_dhcp_client_get_iaid (NMDhcpClient *self);
+guint32 nm_dhcp_client_get_iaid(NMDhcpClient *self);
 
-gboolean nm_dhcp_client_get_iaid_explicit (NMDhcpClient *self);
+gboolean nm_dhcp_client_get_iaid_explicit(NMDhcpClient *self);
 
-GBytes *nm_dhcp_client_get_client_id (NMDhcpClient *self);
+GBytes *nm_dhcp_client_get_client_id(NMDhcpClient *self);
 
-const char *nm_dhcp_client_get_hostname (NMDhcpClient *self);
-const char *nm_dhcp_client_get_mud_url (NMDhcpClient *self);
+const char *       nm_dhcp_client_get_hostname(NMDhcpClient *self);
+const char *       nm_dhcp_client_get_mud_url(NMDhcpClient *self);
+const char *const *nm_dhcp_client_get_reject_servers(NMDhcpClient *self);
 
-NMDhcpHostnameFlags nm_dhcp_client_get_hostname_flags (NMDhcpClient *self);
+NMDhcpHostnameFlags nm_dhcp_client_get_hostname_flags(NMDhcpClient *self);
 
-gboolean nm_dhcp_client_get_info_only (NMDhcpClient *self);
+gboolean nm_dhcp_client_get_info_only(NMDhcpClient *self);
 
-gboolean nm_dhcp_client_get_use_fqdn (NMDhcpClient *self);
+gboolean nm_dhcp_client_get_use_fqdn(NMDhcpClient *self);
 
-gboolean nm_dhcp_client_start_ip4 (NMDhcpClient *self,
-                                   GBytes *client_id,
-                                   const char *dhcp_anycast_addr,
-                                   const char *last_ip4_address,
-                                   GError **error);
+GBytes *nm_dhcp_client_get_vendor_class_identifier(NMDhcpClient *self);
 
-gboolean nm_dhcp_client_start_ip6 (NMDhcpClient *self,
-                                   GBytes *client_id,
-                                   gboolean enforce_duid,
-                                   const char *dhcp_anycast_addr,
-                                   const struct in6_addr *ll_addr,
-                                   NMSettingIP6ConfigPrivacy privacy,
-                                   guint needed_prefixes,
-                                   GError **error);
+gboolean nm_dhcp_client_start_ip4(NMDhcpClient *self,
+                                  GBytes *      client_id,
+                                  const char *  dhcp_anycast_addr,
+                                  const char *  last_ip4_address,
+                                  GError **     error);
 
-gboolean nm_dhcp_client_accept (NMDhcpClient *self,
-                                GError **error);
+gboolean nm_dhcp_client_start_ip6(NMDhcpClient *            self,
+                                  GBytes *                  client_id,
+                                  gboolean                  enforce_duid,
+                                  const char *              dhcp_anycast_addr,
+                                  const struct in6_addr *   ll_addr,
+                                  NMSettingIP6ConfigPrivacy privacy,
+                                  guint                     needed_prefixes,
+                                  GError **                 error);
 
-gboolean nm_dhcp_client_decline (NMDhcpClient *self,
-                                 const char *error_message,
-                                 GError **error);
+gboolean nm_dhcp_client_accept(NMDhcpClient *self, GError **error);
 
-void nm_dhcp_client_stop (NMDhcpClient *self, gboolean release);
+gboolean nm_dhcp_client_decline(NMDhcpClient *self, const char *error_message, GError **error);
+
+void nm_dhcp_client_stop(NMDhcpClient *self, gboolean release);
 
 /* Backend helpers for subclasses */
-void nm_dhcp_client_stop_existing (const char *pid_file, const char *binary_name);
+void nm_dhcp_client_stop_existing(const char *pid_file, const char *binary_name);
+
+void nm_dhcp_client_stop_pid(pid_t pid, const char *iface);
 
-void nm_dhcp_client_stop_pid (pid_t pid, const char *iface);
+void nm_dhcp_client_start_timeout(NMDhcpClient *self);
 
-void nm_dhcp_client_start_timeout (NMDhcpClient *self);
+void nm_dhcp_client_watch_child(NMDhcpClient *self, pid_t pid);
 
-void nm_dhcp_client_watch_child (NMDhcpClient *self, pid_t pid);
+void nm_dhcp_client_set_state(NMDhcpClient *self,
+                              NMDhcpState   new_state,
+                              NMIPConfig *  ip_config,
+                              GHashTable *  options); /* str:str hash */
 
-void nm_dhcp_client_set_state (NMDhcpClient *self,
-                               NMDhcpState new_state,
-                               NMIPConfig *ip_config,
-                               GHashTable *options); /* str:str hash */
+gboolean nm_dhcp_client_handle_event(gpointer      unused,
+                                     const char *  iface,
+                                     int           pid,
+                                     GVariant *    options,
+                                     const char *  reason,
+                                     NMDhcpClient *self);
 
-gboolean nm_dhcp_client_handle_event (gpointer unused,
-                                      const char *iface,
-                                      int pid,
-                                      GVariant *options,
-                                      const char *reason,
-                                      NMDhcpClient *self);
+void nm_dhcp_client_set_client_id(NMDhcpClient *self, GBytes *client_id);
+void nm_dhcp_client_set_client_id_bin(NMDhcpClient *self,
+                                      guint8        type,
+                                      const guint8 *client_id,
+                                      gsize         len);
 
-void nm_dhcp_client_set_client_id (NMDhcpClient *self,
-                                   GBytes *client_id);
-void nm_dhcp_client_set_client_id_bin (NMDhcpClient *self,
-                                       guint8 type,
-                                       const guint8 *client_id,
-                                       gsize len);
+void nm_dhcp_client_emit_ipv6_prefix_delegated(NMDhcpClient *              self,
+                                               const NMPlatformIP6Address *prefix);
 
-void nm_dhcp_client_emit_ipv6_prefix_delegated (NMDhcpClient *self,
-                                                const NMPlatformIP6Address *prefix);
+gboolean nm_dhcp_client_server_id_is_rejected(NMDhcpClient *self, gconstpointer addr);
 
 /*****************************************************************************
  * Client data
  *****************************************************************************/
 
 typedef struct {
-	GType (*get_type) (void);
-	GType (*get_type_per_addr_family) (int addr_family);
-	const char *name;
-	const char *(*get_path) (void);
-	bool experimental:1;
+    GType (*get_type)(void);
+    GType (*get_type_per_addr_family)(int addr_family);
+    const char *name;
+    const char *(*get_path)(void);
+    bool experimental : 1;
 } NMDhcpClientFactory;
 
-GType nm_dhcp_nettools_get_type (void);
+GType nm_dhcp_nettools_get_type(void);
 
 extern const NMDhcpClientFactory _nm_dhcp_client_factory_dhcpcanon;
 extern const NMDhcpClientFactory _nm_dhcp_client_factory_dhclient;
diff --git a/src/dhcp/nm-dhcp-dhclient-utils.c b/src/dhcp/nm-dhcp-dhclient-utils.c
index 76fc1a89..f0eed6f5 100644
--- a/src/dhcp/nm-dhcp-dhclient-utils.c
+++ b/src/dhcp/nm-dhcp-dhclient-utils.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2011 Red Hat, Inc.
  */
@@ -19,702 +19,695 @@
 #include "platform/nm-platform.h"
 #include "NetworkManagerUtils.h"
 
-#define TIMEOUT_TAG      "timeout "
-#define RETRY_TAG        "retry "
-#define CLIENTID_TAG     "send dhcp-client-identifier"
+#define TIMEOUT_TAG  "timeout "
+#define RETRY_TAG    "retry "
+#define CLIENTID_TAG "send dhcp-client-identifier"
 
 #define HOSTNAME4_TAG    "send host-name"
 #define HOSTNAME4_FORMAT HOSTNAME4_TAG " \"%s\"; # added by NetworkManager"
 
-#define FQDN_TAG_PREFIX  "send fqdn."
-#define FQDN_TAG         FQDN_TAG_PREFIX "fqdn"
-#define FQDN_FORMAT      FQDN_TAG " \"%s\"; # added by NetworkManager"
+#define FQDN_TAG_PREFIX "send fqdn."
+#define FQDN_TAG        FQDN_TAG_PREFIX "fqdn"
+#define FQDN_FORMAT     FQDN_TAG " \"%s\"; # added by NetworkManager"
 
 #define ALSOREQ_TAG "also request "
-#define REQ_TAG "request "
+#define REQ_TAG     "request "
 
-#define MUDURLv4_DEF    "option mudurl code 161 = text;\n"
-#define MUDURLv4_FMT    "send mudurl \"%s\";\n"
-
-#define MUDURLv6_DEF    "option dhcp6.mudurl code 112 = text;\n"
-#define MUDURLv6_FMT    "send dhcp6.mudurl \"%s\";\n"
+#define MUDURLv4_DEF "option mudurl code 161 = text;\n"
+#define MUDURLv4_FMT "send mudurl \"%s\";\n"
 
+#define MUDURLv6_DEF "option dhcp6.mudurl code 112 = text;\n"
+#define MUDURLv6_FMT "send dhcp6.mudurl \"%s\";\n"
 
 static void
-add_request (GPtrArray *array, const char *item)
+add_request(GPtrArray *array, const char *item)
 {
-	guint i;
+    guint i;
 
-	for (i = 0; i < array->len; i++) {
-		if (nm_streq (array->pdata[i], item))
-			return;
-	}
-	g_ptr_array_add (array, g_strdup (item));
+    for (i = 0; i < array->len; i++) {
+        if (nm_streq(array->pdata[i], item))
+            return;
+    }
+    g_ptr_array_add(array, g_strdup(item));
 }
 
 static gboolean
-grab_request_options (GPtrArray *store, const char* line)
+grab_request_options(GPtrArray *store, const char *line)
 {
-	gs_free const char **line_v = NULL;
-	gsize i;
-
-	/* Grab each 'request' or 'also request'  option and save for later */
-	line_v = nm_utils_strsplit_set (line, "\t ,");
-	for (i = 0; line_v && line_v[i]; i++) {
-		const char *ss = nm_str_skip_leading_spaces (line_v[i]);
-		gsize l;
-		gboolean end = FALSE;
-
-		if (!ss[0])
-			continue;
-		if (ss[0] == ';') {
-			/* all done */
-			return TRUE;
-		}
-
-		if (!g_ascii_isalnum (ss[0]))
-			continue;
-
-		l = strlen (ss);
-
-		while (   l > 0
-		       && g_ascii_isspace (ss[l - 1])) {
-			((char *) ss)[l - 1] = '\0';
-			l--;
-		}
-		if (   l > 0
-		    && ss[l - 1] == ';') {
-			/* Remove the EOL marker */
-			((char *) ss)[l - 1] = '\0';
-			end = TRUE;
-		}
-
-		if (ss[0])
-			add_request (store, ss);
-
-		if (end)
-			return TRUE;
-	}
-
-	return FALSE;
+    gs_free const char **line_v = NULL;
+    gsize                i;
+
+    /* Grab each 'request' or 'also request'  option and save for later */
+    line_v = nm_utils_strsplit_set(line, "\t ,");
+    for (i = 0; line_v && line_v[i]; i++) {
+        const char *ss = nm_str_skip_leading_spaces(line_v[i]);
+        gsize       l;
+        gboolean    end = FALSE;
+
+        if (!ss[0])
+            continue;
+        if (ss[0] == ';') {
+            /* all done */
+            return TRUE;
+        }
+
+        if (!g_ascii_isalnum(ss[0]))
+            continue;
+
+        l = strlen(ss);
+
+        while (l > 0 && g_ascii_isspace(ss[l - 1])) {
+            ((char *) ss)[l - 1] = '\0';
+            l--;
+        }
+        if (l > 0 && ss[l - 1] == ';') {
+            /* Remove the EOL marker */
+            ((char *) ss)[l - 1] = '\0';
+            end                  = TRUE;
+        }
+
+        if (ss[0])
+            add_request(store, ss);
+
+        if (end)
+            return TRUE;
+    }
+
+    return FALSE;
 }
 
 static void
-add_ip4_config (GString *str,
-                GBytes *client_id,
-                const char *hostname,
-                gboolean use_fqdn,
-                NMDhcpHostnameFlags hostname_flags)
+add_ip4_config(GString *           str,
+               GBytes *            client_id,
+               const char *        hostname,
+               gboolean            use_fqdn,
+               NMDhcpHostnameFlags hostname_flags)
 {
-	if (client_id) {
-		const char *p;
-		gsize l;
-		guint i;
-
-		p = g_bytes_get_data (client_id, &l);
-		nm_assert (p);
-
-		/* Allow type 0 (non-hardware address) to be represented as a string
-		 * as long as all the characters are printable.
-		 */
-		for (i = 1; (p[0] == 0) && i < l; i++) {
-			if (!g_ascii_isprint (p[i]) || p[i] == '\\' || p[i] == '"')
-				break;
-		}
-
-		g_string_append (str, CLIENTID_TAG " ");
-		if (i < l) {
-			/* Unprintable; convert to a hex string */
-			for (i = 0; i < l; i++) {
-				if (i > 0)
-					g_string_append_c (str, ':');
-				g_string_append_printf (str, "%02x", (guint8) p[i]);
-			}
-		} else {
-			/* Printable; just add to the line with type 0 */
-			g_string_append_c (str, '"');
-			g_string_append (str, "\\x00");
-			g_string_append_len (str, p + 1, l - 1);
-			g_string_append_c (str, '"');
-		}
-		g_string_append (str, "; # added by NetworkManager\n");
-	}
-
-	if (hostname) {
-		if (use_fqdn) {
-			g_string_append_printf (str, FQDN_FORMAT "\n", hostname);
-
-			g_string_append_printf (str, FQDN_TAG_PREFIX "encoded %s;\n",
-			                          (hostname_flags & NM_DHCP_HOSTNAME_FLAG_FQDN_ENCODED)
-			                        ? "on"
-			                        : "off");
-
-			g_string_append_printf (str, FQDN_TAG_PREFIX "server-update %s;\n",
-			                          (hostname_flags & NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE)
-			                        ? "on"
-			                        : "off");
-
-			g_string_append_printf (str, FQDN_TAG_PREFIX "no-client-update %s;\n",
-			                          (hostname_flags & NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE)
-			                        ? "on"
-			                        : "off");
-		} else
-			g_string_append_printf (str, HOSTNAME4_FORMAT "\n", hostname);
-	}
-
-	g_string_append_c (str, '\n');
-
-	/* Define options for classless static routes */
-	g_string_append (str,
-	                 "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n");
-	g_string_append (str,
-	                 "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n");
-	/* Web Proxy Auto-Discovery option (bgo #368423) */
-	g_string_append (str, "option wpad code 252 = string;\n");
-
-	g_string_append_c (str, '\n');
+    if (client_id) {
+        const char *p;
+        gsize       l;
+        guint       i;
+
+        p = g_bytes_get_data(client_id, &l);
+        nm_assert(p);
+
+        /* Allow type 0 (non-hardware address) to be represented as a string
+         * as long as all the characters are printable.
+         */
+        for (i = 1; (p[0] == 0) && i < l; i++) {
+            if (!g_ascii_isprint(p[i]) || p[i] == '\\' || p[i] == '"')
+                break;
+        }
+
+        g_string_append(str, CLIENTID_TAG " ");
+        if (i < l) {
+            /* Unprintable; convert to a hex string */
+            for (i = 0; i < l; i++) {
+                if (i > 0)
+                    g_string_append_c(str, ':');
+                g_string_append_printf(str, "%02x", (guint8) p[i]);
+            }
+        } else {
+            /* Printable; just add to the line with type 0 */
+            g_string_append_c(str, '"');
+            g_string_append(str, "\\x00");
+            g_string_append_len(str, p + 1, l - 1);
+            g_string_append_c(str, '"');
+        }
+        g_string_append(str, "; # added by NetworkManager\n");
+    }
+
+    if (hostname) {
+        if (use_fqdn) {
+            g_string_append_printf(str, FQDN_FORMAT "\n", hostname);
+
+            g_string_append_printf(str,
+                                   FQDN_TAG_PREFIX "encoded %s;\n",
+                                   (hostname_flags & NM_DHCP_HOSTNAME_FLAG_FQDN_ENCODED) ? "on"
+                                                                                         : "off");
+
+            g_string_append_printf(
+                str,
+                FQDN_TAG_PREFIX "server-update %s;\n",
+                (hostname_flags & NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE) ? "on" : "off");
+
+            g_string_append_printf(str,
+                                   FQDN_TAG_PREFIX "no-client-update %s;\n",
+                                   (hostname_flags & NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE) ? "on"
+                                                                                           : "off");
+        } else
+            g_string_append_printf(str, HOSTNAME4_FORMAT "\n", hostname);
+    }
+
+    g_string_append_c(str, '\n');
+
+    /* Define options for classless static routes */
+    g_string_append(
+        str,
+        "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n");
+    g_string_append(str,
+                    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n");
+    /* Web Proxy Auto-Discovery option (bgo #368423) */
+    g_string_append(str, "option wpad code 252 = string;\n");
+
+    g_string_append_c(str, '\n');
 }
 
 static void
-add_hostname6 (GString *str,
-               const char *hostname,
-               NMDhcpHostnameFlags hostname_flags)
+add_hostname6(GString *str, const char *hostname, NMDhcpHostnameFlags hostname_flags)
 {
-	if (hostname) {
-		g_string_append_printf (str, FQDN_FORMAT "\n", hostname);
-		if (hostname_flags & NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE)
-			g_string_append (str, FQDN_TAG_PREFIX "server-update on;\n");
-		if (hostname_flags & NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE)
-			g_string_append (str, FQDN_TAG_PREFIX "no-client-update on;\n");
-		g_string_append_c (str, '\n');
-	}
+    if (hostname) {
+        g_string_append_printf(str, FQDN_FORMAT "\n", hostname);
+        if (hostname_flags & NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE)
+            g_string_append(str, FQDN_TAG_PREFIX "server-update on;\n");
+        if (hostname_flags & NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE)
+            g_string_append(str, FQDN_TAG_PREFIX "no-client-update on;\n");
+        g_string_append_c(str, '\n');
+    }
 }
 
-static void add_mud_url_config(GString *str, const char *mud_url, int addr_family)
+static void
+add_mud_url_config(GString *str, const char *mud_url, int addr_family)
 {
-	if (mud_url) {
-		if (addr_family == AF_INET) {
-			g_string_append (str, MUDURLv4_DEF);
-			g_string_append_printf (str, MUDURLv4_FMT, mud_url);
-		} else {
-			g_string_append (str, MUDURLv6_DEF);
-			g_string_append_printf (str, MUDURLv6_FMT, mud_url);
-		}
-	}
+    if (mud_url) {
+        if (addr_family == AF_INET) {
+            g_string_append(str, MUDURLv4_DEF);
+            g_string_append_printf(str, MUDURLv4_FMT, mud_url);
+        } else {
+            g_string_append(str, MUDURLv6_DEF);
+            g_string_append_printf(str, MUDURLv6_FMT, mud_url);
+        }
+    }
 }
 
 static GBytes *
-read_client_id (const char *str)
+read_client_id(const char *str)
 {
-	gs_free char *s = NULL;
-	char *p;
-	int i = 0, j = 0;
-
-	nm_assert (!strncmp (str, CLIENTID_TAG, NM_STRLEN (CLIENTID_TAG)));
-	str += NM_STRLEN (CLIENTID_TAG);
-
-	if (!g_ascii_isspace (*str))
-		return NULL;
-	while (g_ascii_isspace (*str))
-		str++;
-
-	if (*str == '"') {
-		/* Parse string literal with escape sequences */
-		s = g_strdup (str + 1);
-		p = strrchr (s, '"');
-		if (p)
-			*p = '\0';
-		else
-			return NULL;
-
-		if (!s[0])
-			return NULL;
-
-		while (s[i]) {
-			if (   s[i] == '\\'
-			    && s[i + 1] == 'x'
-			    && g_ascii_isxdigit (s[i + 2])
-			    && g_ascii_isxdigit (s[i + 3])) {
-				s[j++] =  (g_ascii_xdigit_value (s[i + 2]) << 4)
-				         + g_ascii_xdigit_value (s[i + 3]);
-				i += 4;
-				continue;
-			}
-			if (   s[i] == '\\'
-			    && s[i + 1] >= '0' && s[i + 1] <= '7'
-			    && s[1 + 2] >= '0' && s[i + 2] <= '7'
-			    && s[1 + 3] >= '0' && s[i + 3] <= '7') {
-				s[j++] =    ((s[i + 1] - '0') << 6)
-				          + ((s[i + 2] - '0') << 3)
-				          + ( s[i + 3] - '0');
-				i += 4;
-				continue;
-			}
-			s[j++] = s[i++];
-		}
-		return g_bytes_new_take (g_steal_pointer (&s), j);
-	}
-
-	/* Otherwise, try to read a hexadecimal sequence */
-	s = g_strdup (str);
-	g_strchomp (s);
-	if (s[strlen (s) - 1] == ';')
-		s[strlen (s) - 1] = '\0';
-
-	return nm_utils_hexstr2bin (s);
+    gs_free char *s = NULL;
+    char *        p;
+    int           i = 0, j = 0;
+
+    nm_assert(!strncmp(str, CLIENTID_TAG, NM_STRLEN(CLIENTID_TAG)));
+    str += NM_STRLEN(CLIENTID_TAG);
+
+    if (!g_ascii_isspace(*str))
+        return NULL;
+    while (g_ascii_isspace(*str))
+        str++;
+
+    if (*str == '"') {
+        /* Parse string literal with escape sequences */
+        s = g_strdup(str + 1);
+        p = strrchr(s, '"');
+        if (p)
+            *p = '\0';
+        else
+            return NULL;
+
+        if (!s[0])
+            return NULL;
+
+        while (s[i]) {
+            if (s[i] == '\\' && s[i + 1] == 'x' && g_ascii_isxdigit(s[i + 2])
+                && g_ascii_isxdigit(s[i + 3])) {
+                s[j++] = (g_ascii_xdigit_value(s[i + 2]) << 4) + g_ascii_xdigit_value(s[i + 3]);
+                i += 4;
+                continue;
+            }
+            if (s[i] == '\\' && s[i + 1] >= '0' && s[i + 1] <= '7' && s[1 + 2] >= '0'
+                && s[i + 2] <= '7' && s[1 + 3] >= '0' && s[i + 3] <= '7') {
+                s[j++] = ((s[i + 1] - '0') << 6) + ((s[i + 2] - '0') << 3) + (s[i + 3] - '0');
+                i += 4;
+                continue;
+            }
+            s[j++] = s[i++];
+        }
+        return g_bytes_new_take(g_steal_pointer(&s), j);
+    }
+
+    /* Otherwise, try to read a hexadecimal sequence */
+    s = g_strdup(str);
+    g_strchomp(s);
+    if (s[strlen(s) - 1] == ';')
+        s[strlen(s) - 1] = '\0';
+
+    return nm_utils_hexstr2bin(s);
 }
 
 static gboolean
-read_interface (const char *line, char *interface, guint size)
+read_interface(const char *line, char *interface, guint size)
 {
-	gs_free char *dup = g_strdup (line + NM_STRLEN ("interface"));
-	char *ptr = dup, *end;
-
-	while (g_ascii_isspace (*ptr))
-		ptr++;
-
-	if (*ptr == '"') {
-		ptr++;
-		end = strchr (ptr, '"');
-		if (!end)
-			return FALSE;
-		*end = '\0';
-	} else {
-		end = strchr (ptr, ' ');
-		if (!end)
-			end = strchr (ptr, '{');
-		if (!end)
-			return FALSE;
-		*end = '\0';
-	}
-
-	if (   ptr[0] == '\0'
-	    || strlen (ptr) + 1 > size)
-		return FALSE;
-
-	snprintf (interface, size, "%s", ptr);
-
-	return TRUE;
+    gs_free char *dup = g_strdup(line + NM_STRLEN("interface"));
+    char *        ptr = dup, *end;
+
+    while (g_ascii_isspace(*ptr))
+        ptr++;
+
+    if (*ptr == '"') {
+        ptr++;
+        end = strchr(ptr, '"');
+        if (!end)
+            return FALSE;
+        *end = '\0';
+    } else {
+        end = strchr(ptr, ' ');
+        if (!end)
+            end = strchr(ptr, '{');
+        if (!end)
+            return FALSE;
+        *end = '\0';
+    }
+
+    if (ptr[0] == '\0' || strlen(ptr) + 1 > size)
+        return FALSE;
+
+    snprintf(interface, size, "%s", ptr);
+
+    return TRUE;
 }
 
 char *
-nm_dhcp_dhclient_create_config (const char *interface,
-                                int addr_family,
-                                GBytes *client_id,
-                                const char *anycast_addr,
-                                const char *hostname,
-                                guint32 timeout,
-                                gboolean use_fqdn,
-                                NMDhcpHostnameFlags hostname_flags,
-                                const char *mud_url,
-                                const char *orig_path,
-                                const char *orig_contents,
-                                GBytes **out_new_client_id)
+nm_dhcp_dhclient_create_config(const char *        interface,
+                               int                 addr_family,
+                               GBytes *            client_id,
+                               const char *        anycast_addr,
+                               const char *        hostname,
+                               guint32             timeout,
+                               gboolean            use_fqdn,
+                               NMDhcpHostnameFlags hostname_flags,
+                               const char *        mud_url,
+                               const char *const * reject_servers,
+                               const char *        orig_path,
+                               const char *        orig_contents,
+                               GBytes **           out_new_client_id)
 {
-	nm_auto_free_gstring GString *new_contents = NULL;
-	gs_unref_ptrarray GPtrArray *fqdn_opts = NULL;
-	gs_unref_ptrarray GPtrArray *reqs = NULL;
-	gboolean reset_reqlist = FALSE;
-	int i;
-
-	g_return_val_if_fail (!anycast_addr || nm_utils_hwaddr_valid (anycast_addr, ETH_ALEN), NULL);
-	g_return_val_if_fail (NM_IN_SET (addr_family, AF_INET, AF_INET6), NULL);
-	nm_assert (!out_new_client_id || !*out_new_client_id);
-
-	new_contents = g_string_new (_("# Created by NetworkManager\n"));
-	reqs = g_ptr_array_new_full (5, g_free);
-
-	if (orig_contents) {
-		gs_free const char **lines = NULL;
-		gsize line_i;
-		nm_auto_free_gstring GString *blocks_stack = NULL;
-		guint blocks_skip = 0;
-		gboolean in_alsoreq = FALSE;
-		gboolean in_req = FALSE;
-		char intf[IFNAMSIZ];
-
-		blocks_stack = g_string_new (NULL);
-		g_string_append_printf (new_contents, _("# Merged from %s\n\n"), orig_path);
-		intf[0] = '\0';
-
-		lines = nm_utils_strsplit_set (orig_contents, "\n\r");
-		for (line_i = 0; lines && lines[line_i]; line_i++) {
-			const char *line = nm_str_skip_leading_spaces (lines[line_i]);
-			const char *p;
-
-			if (line[0] == '\0')
-				continue;
-
-			g_strchomp ((char *) line);
-
-			p = line;
-			if (in_req) {
-				/* pass */
-			} else if (strchr (p, '{')) {
-				if (   NM_STR_HAS_PREFIX (p, "lease")
-				    || NM_STR_HAS_PREFIX (p, "alias")
-				    || NM_STR_HAS_PREFIX (p, "interface")
-				    || NM_STR_HAS_PREFIX (p, "pseudo")) {
-					/* skip over these blocks, except 'interface' when it
-					 * matches the current interface */
-					blocks_skip++;
-					g_string_append_c (blocks_stack, 'b');
-					if (   !intf[0]
-					    && NM_STR_HAS_PREFIX (p, "interface")) {
-						if (read_interface (p, intf, sizeof (intf)))
-							continue;
-					}
-				} else {
-					/* allow other blocks (conditionals) */
-					if (!strchr (p, '}')) /* '} else {'  */
-						g_string_append_c (blocks_stack, 'c');
-				}
-			} else if (strchr (p, '}')) {
-				if (blocks_stack->len > 0) {
-					if (blocks_stack->str[blocks_stack->len - 1] == 'b') {
-						g_string_truncate (blocks_stack, blocks_stack->len - 1);
-						nm_assert(blocks_skip > 0);
-						blocks_skip--;
-						intf[0] = '\0';
-						continue;
-					}
-					g_string_truncate (blocks_stack, blocks_stack->len - 1);
-				}
-			}
-
-			if (blocks_skip > 0 && !intf[0])
-				continue;
-
-			if (intf[0] && !nm_streq (intf, interface))
-				continue;
-
-			/* Some timing parameters in dhclient should not be imported (timeout, retry).
-			 * The retry parameter will be simply not used as we will exit on first failure.
-			 * The timeout one instead may affect NetworkManager behavior: if the timeout
-			 * elapses before dhcp-timeout dhclient will report failure and cause NM to
-			 * fail the dhcp process before dhcp-timeout. So, always skip importing timeout
-			 * as we will need to add one greater than dhcp-timeout.
-			 */
-			if (   !strncmp (p, TIMEOUT_TAG, strlen (TIMEOUT_TAG))
-			    || !strncmp (p, RETRY_TAG, strlen (RETRY_TAG)))
-				continue;
-
-			if (!strncmp (p, CLIENTID_TAG, strlen (CLIENTID_TAG))) {
-				/* Override config file "dhcp-client-id" and use one from the connection */
-				if (client_id)
-					continue;
-
-				/* Otherwise capture and return the existing client id */
-				if (out_new_client_id)
-					nm_clear_pointer (out_new_client_id, g_bytes_unref);
-				NM_SET_OUT (out_new_client_id, read_client_id (p));
-			}
-
-			/* Override config file hostname and use one from the connection */
-			if (hostname) {
-				if (strncmp (p, HOSTNAME4_TAG, strlen (HOSTNAME4_TAG)) == 0)
-					continue;
-				if (strncmp (p, FQDN_TAG, strlen (FQDN_TAG)) == 0)
-					continue;
-			}
-
-			/* To let user's FQDN options (except "fqdn.fqdn") override the
-			 * default ones set by NM, add them later
-			 */
-			if (!strncmp (p, FQDN_TAG_PREFIX, NM_STRLEN (FQDN_TAG_PREFIX))) {
-				if (!fqdn_opts)
-					fqdn_opts = g_ptr_array_new_full (5, g_free);
-				g_ptr_array_add (fqdn_opts, g_strdup (p + NM_STRLEN (FQDN_TAG_PREFIX)));
-				continue;
-			}
-
-			/* Ignore 'script' since we pass our own */
-			if (g_str_has_prefix (p, "script "))
-				continue;
-
-			/* Check for "request" */
-			if (!strncmp (p, REQ_TAG, strlen (REQ_TAG))) {
-				in_req = TRUE;
-				p += strlen (REQ_TAG);
-				g_ptr_array_set_size (reqs, 0);
-				reset_reqlist = TRUE;
-			}
-
-			/* Save all request options for later use */
-			if (in_req) {
-				in_req = !grab_request_options (reqs, p);
-				continue;
-			}
-
-			/* Check for "also require" */
-			if (!strncmp (p, ALSOREQ_TAG, strlen (ALSOREQ_TAG))) {
-				in_alsoreq = TRUE;
-				p += strlen (ALSOREQ_TAG);
-			}
-
-			if (in_alsoreq) {
-				in_alsoreq = !grab_request_options (reqs, p);
-				continue;
-			}
-
-			/* Existing configuration line is OK, add it to new configuration */
-			g_string_append (new_contents, line);
-			g_string_append_c (new_contents, '\n');
-		}
-	} else
-		g_string_append_c (new_contents, '\n');
-
-	/* ensure dhclient timeout is greater than dhcp-timeout: as dhclient timeout default value is
-	 * 60 seconds, we need this only if dhcp-timeout is greater than 60.
-	 */
-	if (timeout >= 60) {
-		timeout = timeout < G_MAXINT32 ? timeout + 1 : G_MAXINT32;
-		g_string_append_printf (new_contents, "timeout %u;\n", timeout);
-	}
-
-	add_mud_url_config (new_contents, mud_url, addr_family);
-	if (addr_family == AF_INET) {
-		add_ip4_config (new_contents, client_id, hostname, use_fqdn, hostname_flags);
-		add_request (reqs, "rfc3442-classless-static-routes");
-		add_request (reqs, "ms-classless-static-routes");
-		add_request (reqs, "static-routes");
-		add_request (reqs, "wpad");
-		add_request (reqs, "ntp-servers");
-		add_request (reqs, "root-path");
-	} else {
-		add_hostname6 (new_contents, hostname, hostname_flags);
-		add_request (reqs, "dhcp6.name-servers");
-		add_request (reqs, "dhcp6.domain-search");
-
-		/* FIXME: internal client does not support requesting client-id option. Does this even work? */
-		add_request (reqs, "dhcp6.client-id");
-	}
-
-	if (reset_reqlist)
-		g_string_append (new_contents, "request; # override dhclient defaults\n");
-	/* And add it to the dhclient configuration */
-	for (i = 0; i < reqs->len; i++)
-		g_string_append_printf (new_contents, "also request %s;\n", (char *) reqs->pdata[i]);
-
-	if (fqdn_opts) {
-		for (i = 0; i < fqdn_opts->len; i++) {
-			const char *t = fqdn_opts->pdata[i];
-
-			if (i == 0)
-				g_string_append_printf (new_contents, "\n# FQDN options from %s\n", orig_path);
-			g_string_append_printf (new_contents, FQDN_TAG_PREFIX "%s\n", t);
-		}
-	}
-
-	g_string_append_c (new_contents, '\n');
-
-	if (anycast_addr) {
-		g_string_append_printf (new_contents, "interface \"%s\" {\n"
-		                        " initial-interval 1; \n"
-		                        " anycast-mac ethernet %s;\n"
-		                        "}\n",
-		                        interface, anycast_addr);
-	}
-
-	return g_string_free (g_steal_pointer (&new_contents), FALSE);
+    nm_auto_free_gstring GString *new_contents = NULL;
+    gs_unref_ptrarray GPtrArray *fqdn_opts     = NULL;
+    gs_unref_ptrarray GPtrArray *reqs          = NULL;
+    gboolean                     reset_reqlist = FALSE;
+    int                          i;
+
+    g_return_val_if_fail(!anycast_addr || nm_utils_hwaddr_valid(anycast_addr, ETH_ALEN), NULL);
+    g_return_val_if_fail(NM_IN_SET(addr_family, AF_INET, AF_INET6), NULL);
+    g_return_val_if_fail(!reject_servers || addr_family == AF_INET, NULL);
+    nm_assert(!out_new_client_id || !*out_new_client_id);
+
+    new_contents = g_string_new(_("# Created by NetworkManager\n"));
+    reqs         = g_ptr_array_new_full(5, g_free);
+
+    if (orig_contents) {
+        gs_free const char **lines = NULL;
+        gsize                line_i;
+        nm_auto_free_gstring GString *blocks_stack = NULL;
+        guint                         blocks_skip  = 0;
+        gboolean                      in_alsoreq   = FALSE;
+        gboolean                      in_req       = FALSE;
+        char                          intf[IFNAMSIZ];
+
+        blocks_stack = g_string_new(NULL);
+        g_string_append_printf(new_contents, _("# Merged from %s\n\n"), orig_path);
+        intf[0] = '\0';
+
+        lines = nm_utils_strsplit_set(orig_contents, "\n\r");
+        for (line_i = 0; lines && lines[line_i]; line_i++) {
+            const char *line = nm_str_skip_leading_spaces(lines[line_i]);
+            const char *p;
+
+            if (line[0] == '\0')
+                continue;
+
+            g_strchomp((char *) line);
+
+            p = line;
+            if (in_req) {
+                /* pass */
+            } else if (strchr(p, '{')) {
+                if (NM_STR_HAS_PREFIX(p, "lease") || NM_STR_HAS_PREFIX(p, "alias")
+                    || NM_STR_HAS_PREFIX(p, "interface") || NM_STR_HAS_PREFIX(p, "pseudo")) {
+                    /* skip over these blocks, except 'interface' when it
+                     * matches the current interface */
+                    blocks_skip++;
+                    g_string_append_c(blocks_stack, 'b');
+                    if (!intf[0] && NM_STR_HAS_PREFIX(p, "interface")) {
+                        if (read_interface(p, intf, sizeof(intf)))
+                            continue;
+                    }
+                } else {
+                    /* allow other blocks (conditionals) */
+                    if (!strchr(p, '}')) /* '} else {'  */
+                        g_string_append_c(blocks_stack, 'c');
+                }
+            } else if (strchr(p, '}')) {
+                if (blocks_stack->len > 0) {
+                    if (blocks_stack->str[blocks_stack->len - 1] == 'b') {
+                        g_string_truncate(blocks_stack, blocks_stack->len - 1);
+                        nm_assert(blocks_skip > 0);
+                        blocks_skip--;
+                        intf[0] = '\0';
+                        continue;
+                    }
+                    g_string_truncate(blocks_stack, blocks_stack->len - 1);
+                }
+            }
+
+            if (blocks_skip > 0 && !intf[0])
+                continue;
+
+            if (intf[0] && !nm_streq(intf, interface))
+                continue;
+
+            /* Some timing parameters in dhclient should not be imported (timeout, retry).
+             * The retry parameter will be simply not used as we will exit on first failure.
+             * The timeout one instead may affect NetworkManager behavior: if the timeout
+             * elapses before dhcp-timeout dhclient will report failure and cause NM to
+             * fail the dhcp process before dhcp-timeout. So, always skip importing timeout
+             * as we will need to add one greater than dhcp-timeout.
+             */
+            if (!strncmp(p, TIMEOUT_TAG, strlen(TIMEOUT_TAG))
+                || !strncmp(p, RETRY_TAG, strlen(RETRY_TAG)))
+                continue;
+
+            if (!strncmp(p, CLIENTID_TAG, strlen(CLIENTID_TAG))) {
+                /* Override config file "dhcp-client-id" and use one from the connection */
+                if (client_id)
+                    continue;
+
+                /* Otherwise, capture and return the existing client id */
+                if (out_new_client_id)
+                    nm_clear_pointer(out_new_client_id, g_bytes_unref);
+                NM_SET_OUT(out_new_client_id, read_client_id(p));
+            }
+
+            /* Override config file hostname and use one from the connection */
+            if (hostname) {
+                if (strncmp(p, HOSTNAME4_TAG, strlen(HOSTNAME4_TAG)) == 0)
+                    continue;
+                if (strncmp(p, FQDN_TAG, strlen(FQDN_TAG)) == 0)
+                    continue;
+            }
+
+            /* To let user's FQDN options (except "fqdn.fqdn") override the
+             * default ones set by NM, add them later
+             */
+            if (!strncmp(p, FQDN_TAG_PREFIX, NM_STRLEN(FQDN_TAG_PREFIX))) {
+                if (!fqdn_opts)
+                    fqdn_opts = g_ptr_array_new_full(5, g_free);
+                g_ptr_array_add(fqdn_opts, g_strdup(p + NM_STRLEN(FQDN_TAG_PREFIX)));
+                continue;
+            }
+
+            /* Ignore 'script' since we pass our own */
+            if (g_str_has_prefix(p, "script "))
+                continue;
+
+            /* Check for "request" */
+            if (!strncmp(p, REQ_TAG, strlen(REQ_TAG))) {
+                in_req = TRUE;
+                p += strlen(REQ_TAG);
+                g_ptr_array_set_size(reqs, 0);
+                reset_reqlist = TRUE;
+            }
+
+            /* Save all request options for later use */
+            if (in_req) {
+                in_req = !grab_request_options(reqs, p);
+                continue;
+            }
+
+            /* Check for "also require" */
+            if (!strncmp(p, ALSOREQ_TAG, strlen(ALSOREQ_TAG))) {
+                in_alsoreq = TRUE;
+                p += strlen(ALSOREQ_TAG);
+            }
+
+            if (in_alsoreq) {
+                in_alsoreq = !grab_request_options(reqs, p);
+                continue;
+            }
+
+            /* Existing configuration line is OK, add it to new configuration */
+            g_string_append(new_contents, line);
+            g_string_append_c(new_contents, '\n');
+        }
+    } else
+        g_string_append_c(new_contents, '\n');
+
+    /* ensure dhclient timeout is greater than dhcp-timeout: as dhclient timeout default value is
+     * 60 seconds, we need this only if dhcp-timeout is greater than 60.
+     */
+    if (timeout >= 60) {
+        timeout = timeout < G_MAXINT32 ? timeout + 1 : G_MAXINT32;
+        g_string_append_printf(new_contents, "timeout %u;\n", timeout);
+    }
+
+    add_mud_url_config(new_contents, mud_url, addr_family);
+
+    if (reject_servers && reject_servers[0]) {
+        g_string_append(new_contents, "reject ");
+        for (i = 0; reject_servers[i]; i++) {
+            if (i != 0)
+                g_string_append(new_contents, ", ");
+            g_string_append(new_contents, reject_servers[i]);
+        }
+        g_string_append(new_contents, ";\n");
+    }
+
+    if (addr_family == AF_INET) {
+        add_ip4_config(new_contents, client_id, hostname, use_fqdn, hostname_flags);
+        add_request(reqs, "rfc3442-classless-static-routes");
+        add_request(reqs, "ms-classless-static-routes");
+        add_request(reqs, "static-routes");
+        add_request(reqs, "wpad");
+        add_request(reqs, "ntp-servers");
+        add_request(reqs, "root-path");
+    } else {
+        add_hostname6(new_contents, hostname, hostname_flags);
+        add_request(reqs, "dhcp6.name-servers");
+        add_request(reqs, "dhcp6.domain-search");
+
+        /* FIXME: internal client does not support requesting client-id option. Does this even work? */
+        add_request(reqs, "dhcp6.client-id");
+    }
+
+    if (reset_reqlist)
+        g_string_append(new_contents, "request; # override dhclient defaults\n");
+    /* And add it to the dhclient configuration */
+    for (i = 0; i < reqs->len; i++)
+        g_string_append_printf(new_contents, "also request %s;\n", (char *) reqs->pdata[i]);
+
+    if (fqdn_opts) {
+        for (i = 0; i < fqdn_opts->len; i++) {
+            const char *t = fqdn_opts->pdata[i];
+
+            if (i == 0)
+                g_string_append_printf(new_contents, "\n# FQDN options from %s\n", orig_path);
+            g_string_append_printf(new_contents, FQDN_TAG_PREFIX "%s\n", t);
+        }
+    }
+
+    g_string_append_c(new_contents, '\n');
+
+    if (anycast_addr) {
+        g_string_append_printf(new_contents,
+                               "interface \"%s\" {\n"
+                               " initial-interval 1; \n"
+                               " anycast-mac ethernet %s;\n"
+                               "}\n",
+                               interface,
+                               anycast_addr);
+    }
+
+    return g_string_free(g_steal_pointer(&new_contents), FALSE);
 }
 
 /* Roughly follow what dhclient's quotify_buf() and pretty_escape() functions do */
 char *
-nm_dhcp_dhclient_escape_duid (GBytes *duid)
+nm_dhcp_dhclient_escape_duid(GBytes *duid)
 {
-	char *escaped;
-	const guint8 *s, *s0;
-	gsize len;
-	char *d;
-
-	g_return_val_if_fail (duid, NULL);
-
-	s0 = g_bytes_get_data (duid, &len);
-	s = s0;
-
-	d = escaped = g_malloc ((len * 4) + 1);
-	while (s < (s0 + len)) {
-		if (!g_ascii_isprint (*s)) {
-			*d++ = '\\';
-			*d++ = '0' + ((*s >> 6) & 0x7);
-			*d++ = '0' + ((*s >> 3) & 0x7);
-			*d++ = '0' + (*s++ & 0x7);
-		} else if (*s == '"' || *s == '\'' || *s == '$' ||
-		           *s == '`' || *s == '\\' || *s == '|' ||
-		           *s == '&') {
-			*d++ = '\\';
-			*d++ = *s++;
-		} else
-			*d++ = *s++;
-	}
-	*d++ = '\0';
-	return escaped;
+    char *        escaped;
+    const guint8 *s, *s0;
+    gsize         len;
+    char *        d;
+
+    g_return_val_if_fail(duid, NULL);
+
+    s0 = g_bytes_get_data(duid, &len);
+    s  = s0;
+
+    d = escaped = g_malloc((len * 4) + 1);
+    while (s < (s0 + len)) {
+        if (!g_ascii_isprint(*s)) {
+            *d++ = '\\';
+            *d++ = '0' + ((*s >> 6) & 0x7);
+            *d++ = '0' + ((*s >> 3) & 0x7);
+            *d++ = '0' + (*s++ & 0x7);
+        } else if (*s == '"' || *s == '\'' || *s == '$' || *s == '`' || *s == '\\' || *s == '|'
+                   || *s == '&') {
+            *d++ = '\\';
+            *d++ = *s++;
+        } else
+            *d++ = *s++;
+    }
+    *d++ = '\0';
+    return escaped;
 }
 
 static gboolean
-isoctal (const guint8 *p)
+isoctal(const guint8 *p)
 {
-	return (   p[0] >= '0' && p[0] <= '3'
-	        && p[1] >= '0' && p[1] <= '7'
-	        && p[2] >= '0' && p[2] <= '7');
+    return (p[0] >= '0' && p[0] <= '3' && p[1] >= '0' && p[1] <= '7' && p[2] >= '0' && p[2] <= '7');
 }
 
 GBytes *
-nm_dhcp_dhclient_unescape_duid (const char *duid)
+nm_dhcp_dhclient_unescape_duid(const char *duid)
 {
-	GByteArray *unescaped;
-	const guint8 *p = (const guint8 *) duid;
-	guint i, len;
-	guint8 octal;
-
-	/* FIXME: it's wrong to have an "unescape-duid" function. dhclient
-	 * defines a file format with escaping. So we need a general unescape
-	 * function that can handle dhclient syntax. */
-
-	len = strlen (duid);
-	unescaped = g_byte_array_sized_new (len);
-	for (i = 0; i < len; i++) {
-		if (p[i] == '\\') {
-			i++;
-			if (isdigit (p[i])) {
-				/* Octal escape sequence */
-				if (i + 2 >= len || !isoctal (p + i))
-					goto error;
-				octal = ((p[i] - '0') << 6) + ((p[i + 1] - '0') << 3) + (p[i + 2] - '0');
-				g_byte_array_append (unescaped, &octal, 1);
-				i += 2;
-			} else {
-				/* FIXME: don't warn on untrusted data. Either signal an error, or accept
-				 * it silently. */
-
-				/* One of ", ', $, `, \, |, or & */
-				g_warn_if_fail (p[i] == '"' || p[i] == '\'' || p[i] == '$' ||
-				                p[i] == '`' || p[i] == '\\' || p[i] == '|' ||
-				                p[i] == '&');
-				g_byte_array_append (unescaped, &p[i], 1);
-			}
-		} else
-			g_byte_array_append (unescaped, &p[i], 1);
-	}
-
-	return g_byte_array_free_to_bytes (unescaped);
+    GByteArray *  unescaped;
+    const guint8 *p = (const guint8 *) duid;
+    guint         i, len;
+    guint8        octal;
+
+    /* FIXME: it's wrong to have an "unescape-duid" function. dhclient
+     * defines a file format with escaping. So we need a general unescape
+     * function that can handle dhclient syntax. */
+
+    len       = strlen(duid);
+    unescaped = g_byte_array_sized_new(len);
+    for (i = 0; i < len; i++) {
+        if (p[i] == '\\') {
+            i++;
+            if (isdigit(p[i])) {
+                /* Octal escape sequence */
+                if (i + 2 >= len || !isoctal(p + i))
+                    goto error;
+                octal = ((p[i] - '0') << 6) + ((p[i + 1] - '0') << 3) + (p[i + 2] - '0');
+                g_byte_array_append(unescaped, &octal, 1);
+                i += 2;
+            } else {
+                /* FIXME: don't warn on untrusted data. Either signal an error, or accept
+                 * it silently. */
+
+                /* One of ", ', $, `, \, |, or & */
+                g_warn_if_fail(p[i] == '"' || p[i] == '\'' || p[i] == '$' || p[i] == '`'
+                               || p[i] == '\\' || p[i] == '|' || p[i] == '&');
+                g_byte_array_append(unescaped, &p[i], 1);
+            }
+        } else
+            g_byte_array_append(unescaped, &p[i], 1);
+    }
+
+    return g_byte_array_free_to_bytes(unescaped);
 
 error:
-	g_byte_array_free (unescaped, TRUE);
-	return NULL;
+    g_byte_array_free(unescaped, TRUE);
+    return NULL;
 }
 
 #define DUID_PREFIX "default-duid \""
 
 /* Beware: @error may be unset even if the function returns %NULL. */
 GBytes *
-nm_dhcp_dhclient_read_duid (const char *leasefile, GError **error)
+nm_dhcp_dhclient_read_duid(const char *leasefile, GError **error)
 {
-	gs_free char *contents = NULL;
-	gs_free const char **contents_v = NULL;
-	gsize i;
+    gs_free char *       contents   = NULL;
+    gs_free const char **contents_v = NULL;
+    gsize                i;
 
-	if (!g_file_test (leasefile, G_FILE_TEST_EXISTS))
-		return NULL;
+    if (!g_file_test(leasefile, G_FILE_TEST_EXISTS))
+        return NULL;
 
-	if (!g_file_get_contents (leasefile, &contents, NULL, error))
-		return NULL;
+    if (!g_file_get_contents(leasefile, &contents, NULL, error))
+        return NULL;
 
-	contents_v = nm_utils_strsplit_set (contents, "\n\r");
-	for (i = 0; contents_v && contents_v[i]; i++) {
-		const char *p = nm_str_skip_leading_spaces (contents_v[i]);
-		GBytes *duid;
+    contents_v = nm_utils_strsplit_set(contents, "\n\r");
+    for (i = 0; contents_v && contents_v[i]; i++) {
+        const char *p = nm_str_skip_leading_spaces(contents_v[i]);
+        GBytes *    duid;
 
-		if (!NM_STR_HAS_PREFIX (p, DUID_PREFIX))
-			continue;
+        if (!NM_STR_HAS_PREFIX(p, DUID_PREFIX))
+            continue;
 
-		p += NM_STRLEN (DUID_PREFIX);
+        p += NM_STRLEN(DUID_PREFIX);
 
-		g_strchomp ((char *) p);
+        g_strchomp((char *) p);
 
-		if (!NM_STR_HAS_SUFFIX (p, "\";"))
-			continue;
+        if (!NM_STR_HAS_SUFFIX(p, "\";"))
+            continue;
 
-		((char *) p)[strlen (p) - 2] = '\0';
+        ((char *) p)[strlen(p) - 2] = '\0';
 
-		duid = nm_dhcp_dhclient_unescape_duid (p);
-		if (duid)
-			return duid;
-	}
+        duid = nm_dhcp_dhclient_unescape_duid(p);
+        if (duid)
+            return duid;
+    }
 
-	return NULL;
+    return NULL;
 }
 
 gboolean
-nm_dhcp_dhclient_save_duid (const char *leasefile,
-                            GBytes *duid,
-                            GError **error)
+nm_dhcp_dhclient_save_duid(const char *leasefile, GBytes *duid, GError **error)
 {
-	gs_free char *escaped_duid = NULL;
-	gs_free const char **lines = NULL;
-	nm_auto_free_gstring GString *s = NULL;
-	const char *const*iter;
-	gsize len = 0;
-
-	g_return_val_if_fail (leasefile != NULL, FALSE);
-	if (!duid) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN,
-		                            "missing duid");
-		g_return_val_if_reached (FALSE);
-	}
-
-	escaped_duid = nm_dhcp_dhclient_escape_duid (duid);
-	nm_assert (escaped_duid);
-
-	if (g_file_test (leasefile, G_FILE_TEST_EXISTS)) {
-		gs_free char *contents = NULL;
-
-		if (!g_file_get_contents (leasefile, &contents, &len, error)) {
-			g_prefix_error (error, "failed to read lease file %s: ", leasefile);
-			return FALSE;
-		}
-
-		lines = nm_utils_strsplit_set_with_empty (contents, "\n\r");
-	}
-
-	s = g_string_sized_new (len + 50);
-	g_string_append_printf (s, DUID_PREFIX "%s\";\n", escaped_duid);
-
-	/* Preserve existing leasefile contents */
-	if (lines) {
-		for (iter = lines; *iter; iter++) {
-			const char *str = *iter;
-			const char *l;
-
-			/* If we find an uncommented DUID in the file, check if
-			 * equal to the one we are going to write: if so, no need
-			 * to update the lease file, otherwise skip the old DUID.
-			 */
-			l = nm_str_skip_leading_spaces (str);
-			if (g_str_has_prefix (l, DUID_PREFIX)) {
-				gs_strfreev char **split = NULL;
-
-				split = g_strsplit (l, "\"", -1);
-				if (   split[0]
-				    && nm_streq0 (split[1], escaped_duid))
-					return TRUE;
-
-				continue;
-			}
-
-			if (str)
-				g_string_append (s, str);
-			/* avoid to add an extra '\n' at the end of file */
-			if ((iter[1]) != NULL)
-				g_string_append_c (s, '\n');
-		}
-	}
-
-	if (!g_file_set_contents (leasefile, s->str, -1, error)) {
-		g_prefix_error (error, "failed to set DUID in lease file %s: ", leasefile);
-		return FALSE;
-	}
-
-	return TRUE;
+    gs_free char *       escaped_duid = NULL;
+    gs_free const char **lines        = NULL;
+    nm_auto_free_gstring GString *s   = NULL;
+    const char *const *           iter;
+    gsize                         len = 0;
+
+    g_return_val_if_fail(leasefile != NULL, FALSE);
+    if (!duid) {
+        nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "missing duid");
+        g_return_val_if_reached(FALSE);
+    }
+
+    escaped_duid = nm_dhcp_dhclient_escape_duid(duid);
+    nm_assert(escaped_duid);
+
+    if (g_file_test(leasefile, G_FILE_TEST_EXISTS)) {
+        gs_free char *contents = NULL;
+
+        if (!g_file_get_contents(leasefile, &contents, &len, error)) {
+            g_prefix_error(error, "failed to read lease file %s: ", leasefile);
+            return FALSE;
+        }
+
+        lines = nm_utils_strsplit_set_with_empty(contents, "\n\r");
+    }
+
+    s = g_string_sized_new(len + 50);
+    g_string_append_printf(s, DUID_PREFIX "%s\";\n", escaped_duid);
+
+    /* Preserve existing leasefile contents */
+    if (lines) {
+        for (iter = lines; *iter; iter++) {
+            const char *str = *iter;
+            const char *l;
+
+            /* If we find an uncommented DUID in the file, check if
+             * equal to the one we are going to write: if so, no need
+             * to update the lease file, otherwise skip the old DUID.
+             */
+            l = nm_str_skip_leading_spaces(str);
+            if (g_str_has_prefix(l, DUID_PREFIX)) {
+                gs_strfreev char **split = NULL;
+
+                split = g_strsplit(l, "\"", -1);
+                if (split[0] && nm_streq0(split[1], escaped_duid))
+                    return TRUE;
+
+                continue;
+            }
+
+            if (str)
+                g_string_append(s, str);
+            /* avoid to add an extra '\n' at the end of file */
+            if ((iter[1]) != NULL)
+                g_string_append_c(s, '\n');
+        }
+    }
+
+    if (!g_file_set_contents(leasefile, s->str, -1, error)) {
+        g_prefix_error(error, "failed to set DUID in lease file %s: ", leasefile);
+        return FALSE;
+    }
+
+    return TRUE;
 }
diff --git a/src/dhcp/nm-dhcp-dhclient-utils.h b/src/dhcp/nm-dhcp-dhclient-utils.h
index 5094d614..3e524ee0 100644
--- a/src/dhcp/nm-dhcp-dhclient-utils.h
+++ b/src/dhcp/nm-dhcp-dhclient-utils.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2010 Red Hat, Inc.
  */
@@ -9,27 +9,26 @@
 #include "nm-setting-ip4-config.h"
 #include "nm-setting-ip6-config.h"
 
-char *nm_dhcp_dhclient_create_config (const char *interface,
-                                      int addr_family,
-                                      GBytes *client_id,
-                                      const char *anycast_addr,
-                                      const char *hostname,
-                                      guint32 timeout,
-                                      gboolean use_fqdn,
-                                      NMDhcpHostnameFlags hostname_flags,
-                                      const char *mud_url,
-                                      const char *orig_path,
-                                      const char *orig_contents,
-                                      GBytes **out_new_client_id);
+char *nm_dhcp_dhclient_create_config(const char *        interface,
+                                     int                 addr_family,
+                                     GBytes *            client_id,
+                                     const char *        anycast_addr,
+                                     const char *        hostname,
+                                     guint32             timeout,
+                                     gboolean            use_fqdn,
+                                     NMDhcpHostnameFlags hostname_flags,
+                                     const char *        mud_url,
+                                     const char *const * reject_servers,
+                                     const char *        orig_path,
+                                     const char *        orig_contents,
+                                     GBytes **           out_new_client_id);
 
-char *nm_dhcp_dhclient_escape_duid (GBytes *duid);
+char *nm_dhcp_dhclient_escape_duid(GBytes *duid);
 
-GBytes *nm_dhcp_dhclient_unescape_duid (const char *duid);
+GBytes *nm_dhcp_dhclient_unescape_duid(const char *duid);
 
-GBytes *nm_dhcp_dhclient_read_duid (const char *leasefile, GError **error);
+GBytes *nm_dhcp_dhclient_read_duid(const char *leasefile, GError **error);
 
-gboolean nm_dhcp_dhclient_save_duid (const char *leasefile,
-                                     GBytes *duid,
-                                     GError **error);
+gboolean nm_dhcp_dhclient_save_duid(const char *leasefile, GBytes *duid, GError **error);
 
 #endif /* __NETWORKMANAGER_DHCP_DHCLIENT_UTILS_H__ */
diff --git a/src/dhcp/nm-dhcp-dhclient.c b/src/dhcp/nm-dhcp-dhclient.c
index 4ad056e5..260f400e 100644
--- a/src/dhcp/nm-dhcp-dhclient.c
+++ b/src/dhcp/nm-dhcp-dhclient.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2005 - 2012 Red Hat, Inc.
  */
@@ -14,74 +14,79 @@
 
 #if WITH_DHCLIENT
 
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <ctype.h>
+    #include <stdlib.h>
+    #include <unistd.h>
+    #include <stdio.h>
+    #include <netinet/in.h>
+    #include <arpa/inet.h>
+    #include <ctype.h>
 
-#include "nm-glib-aux/nm-dedup-multi.h"
+    #include "nm-glib-aux/nm-dedup-multi.h"
 
-#include "nm-utils.h"
-#include "nm-dhcp-dhclient-utils.h"
-#include "nm-dhcp-manager.h"
-#include "NetworkManagerUtils.h"
-#include "nm-dhcp-listener.h"
-#include "nm-dhcp-client-logging.h"
+    #include "nm-utils.h"
+    #include "nm-dhcp-dhclient-utils.h"
+    #include "nm-dhcp-manager.h"
+    #include "NetworkManagerUtils.h"
+    #include "nm-dhcp-listener.h"
+    #include "nm-dhcp-client-logging.h"
 
 /*****************************************************************************/
 
 static const char *
-_addr_family_to_path_part (int addr_family)
+_addr_family_to_path_part(int addr_family)
 {
-	nm_assert (NM_IN_SET (addr_family, AF_INET, AF_INET6));
-	return (addr_family == AF_INET6) ? "6" : "";
+    nm_assert(NM_IN_SET(addr_family, AF_INET, AF_INET6));
+    return (addr_family == AF_INET6) ? "6" : "";
 }
 
 /*****************************************************************************/
 
-#define NM_TYPE_DHCP_DHCLIENT            (nm_dhcp_dhclient_get_type ())
-#define NM_DHCP_DHCLIENT(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_DHCP_DHCLIENT, NMDhcpDhclient))
-#define NM_DHCP_DHCLIENT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_DHCP_DHCLIENT, NMDhcpDhclientClass))
-#define NM_IS_DHCP_DHCLIENT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_DHCP_DHCLIENT))
-#define NM_IS_DHCP_DHCLIENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_DHCP_DHCLIENT))
-#define NM_DHCP_DHCLIENT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_DHCP_DHCLIENT, NMDhcpDhclientClass))
-
-typedef struct _NMDhcpDhclient NMDhcpDhclient;
+    #define NM_TYPE_DHCP_DHCLIENT (nm_dhcp_dhclient_get_type())
+    #define NM_DHCP_DHCLIENT(obj) \
+        (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_DHCP_DHCLIENT, NMDhcpDhclient))
+    #define NM_DHCP_DHCLIENT_CLASS(klass) \
+        (G_TYPE_CHECK_CLASS_CAST((klass), NM_TYPE_DHCP_DHCLIENT, NMDhcpDhclientClass))
+    #define NM_IS_DHCP_DHCLIENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_DHCP_DHCLIENT))
+    #define NM_IS_DHCP_DHCLIENT_CLASS(klass) \
+        (G_TYPE_CHECK_CLASS_TYPE((klass), NM_TYPE_DHCP_DHCLIENT))
+    #define NM_DHCP_DHCLIENT_GET_CLASS(obj) \
+        (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_DHCP_DHCLIENT, NMDhcpDhclientClass))
+
+typedef struct _NMDhcpDhclient      NMDhcpDhclient;
 typedef struct _NMDhcpDhclientClass NMDhcpDhclientClass;
 
-static GType nm_dhcp_dhclient_get_type (void);
+static GType nm_dhcp_dhclient_get_type(void);
 
 /*****************************************************************************/
 
 typedef struct {
-	char *conf_file;
-	const char *def_leasefile;
-	char *lease_file;
-	char *pid_file;
-	NMDhcpListener *dhcp_listener;
+    char *          conf_file;
+    const char *    def_leasefile;
+    char *          lease_file;
+    char *          pid_file;
+    NMDhcpListener *dhcp_listener;
 } NMDhcpDhclientPrivate;
 
 struct _NMDhcpDhclient {
-	NMDhcpClient parent;
-	NMDhcpDhclientPrivate _priv;
+    NMDhcpClient          parent;
+    NMDhcpDhclientPrivate _priv;
 };
 
 struct _NMDhcpDhclientClass {
-	NMDhcpClientClass parent;
+    NMDhcpClientClass parent;
 };
 
-G_DEFINE_TYPE (NMDhcpDhclient, nm_dhcp_dhclient, NM_TYPE_DHCP_CLIENT)
+G_DEFINE_TYPE(NMDhcpDhclient, nm_dhcp_dhclient, NM_TYPE_DHCP_CLIENT)
 
-#define NM_DHCP_DHCLIENT_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDhcpDhclient, NM_IS_DHCP_DHCLIENT)
+    #define NM_DHCP_DHCLIENT_GET_PRIVATE(self) \
+        _NM_GET_PRIVATE(self, NMDhcpDhclient, NM_IS_DHCP_DHCLIENT)
 
 /*****************************************************************************/
 
 static const char *
-nm_dhcp_dhclient_get_path (void)
+nm_dhcp_dhclient_get_path(void)
 {
-	return nm_utils_find_helper ("dhclient", DHCLIENT_PATH, NULL);
+    return nm_utils_find_helper("dhclient", DHCLIENT_PATH, NULL);
 }
 
 /**
@@ -98,159 +103,169 @@ nm_dhcp_dhclient_get_path (void)
  * Returns: an existing leasefile, or %NULL if no matching leasefile could be found
  */
 static char *
-get_dhclient_leasefile (int addr_family,
-                        const char *iface,
-                        const char *uuid,
-                        char **out_preferred_path)
+get_dhclient_leasefile(int         addr_family,
+                       const char *iface,
+                       const char *uuid,
+                       char **     out_preferred_path)
 {
-	gs_free char *path = NULL;
-
-	if (nm_dhcp_utils_get_leasefile_path (addr_family, "dhclient", iface, uuid, &path)) {
-		NM_SET_OUT (out_preferred_path, g_strdup (path));
-		return g_steal_pointer (&path);
-	}
-
-	NM_SET_OUT (out_preferred_path, g_steal_pointer (&path));
-
-	/* If the leasefile we're looking for doesn't exist yet in the new location
-	 * (eg, /var/lib/NetworkManager) then look in old locations to maintain
-	 * backwards compatibility with external tools (like dracut) that put
-	 * leasefiles there.
-	 */
-
-	/* Old Debian, SUSE, and Mandriva location */
-	g_free (path);
-	path = g_strdup_printf (LOCALSTATEDIR "/lib/dhcp/dhclient%s-%s-%s.lease",
-	                        _addr_family_to_path_part (addr_family), uuid, iface);
-	if (g_file_test (path, G_FILE_TEST_EXISTS))
-		return g_steal_pointer (&path);
-
-	/* Old Red Hat and Fedora location */
-	g_free (path);
-	path = g_strdup_printf (LOCALSTATEDIR "/lib/dhclient/dhclient%s-%s-%s.lease",
-	                        _addr_family_to_path_part (addr_family), uuid, iface);
-	if (g_file_test (path, G_FILE_TEST_EXISTS))
-		return g_steal_pointer (&path);
-
-	/* Fail */
-	return NULL;
+    gs_free char *path = NULL;
+
+    if (nm_dhcp_utils_get_leasefile_path(addr_family, "dhclient", iface, uuid, &path)) {
+        NM_SET_OUT(out_preferred_path, g_strdup(path));
+        return g_steal_pointer(&path);
+    }
+
+    NM_SET_OUT(out_preferred_path, g_steal_pointer(&path));
+
+    /* If the leasefile we're looking for doesn't exist yet in the new location
+     * (eg, /var/lib/NetworkManager) then look in old locations to maintain
+     * backwards compatibility with external tools (like dracut) that put
+     * leasefiles there.
+     */
+
+    /* Old Debian, SUSE, and Mandriva location */
+    g_free(path);
+    path = g_strdup_printf(LOCALSTATEDIR "/lib/dhcp/dhclient%s-%s-%s.lease",
+                           _addr_family_to_path_part(addr_family),
+                           uuid,
+                           iface);
+    if (g_file_test(path, G_FILE_TEST_EXISTS))
+        return g_steal_pointer(&path);
+
+    /* Old Red Hat and Fedora location */
+    g_free(path);
+    path = g_strdup_printf(LOCALSTATEDIR "/lib/dhclient/dhclient%s-%s-%s.lease",
+                           _addr_family_to_path_part(addr_family),
+                           uuid,
+                           iface);
+    if (g_file_test(path, G_FILE_TEST_EXISTS))
+        return g_steal_pointer(&path);
+
+    /* Fail */
+    return NULL;
 }
 
 static gboolean
-merge_dhclient_config (NMDhcpDhclient *self,
-                       int addr_family,
-                       const char *iface,
-                       const char *conf_file,
-                       GBytes *client_id,
-                       const char *anycast_addr,
-                       const char *hostname,
-                       guint32 timeout,
-                       gboolean use_fqdn,
-                       NMDhcpHostnameFlags hostname_flags,
-                       const char *mud_url,
-                       const char *orig_path,
-                       GBytes **out_new_client_id,
-                       GError **error)
+merge_dhclient_config(NMDhcpDhclient *    self,
+                      int                 addr_family,
+                      const char *        iface,
+                      const char *        conf_file,
+                      GBytes *            client_id,
+                      const char *        anycast_addr,
+                      const char *        hostname,
+                      guint32             timeout,
+                      gboolean            use_fqdn,
+                      NMDhcpHostnameFlags hostname_flags,
+                      const char *        mud_url,
+                      const char *const * reject_servers,
+                      const char *        orig_path,
+                      GBytes **           out_new_client_id,
+                      GError **           error)
 {
-	gs_free char *orig = NULL;
-	gs_free char *new = NULL;
-
-	g_return_val_if_fail (iface, FALSE);
-	g_return_val_if_fail (conf_file, FALSE);
-
-	if (   orig_path
-	    && g_file_test (orig_path, G_FILE_TEST_EXISTS)) {
-		GError *read_error = NULL;
-
-		if (!g_file_get_contents (orig_path, &orig, NULL, &read_error)) {
-			_LOGW ("error reading dhclient configuration %s: %s",
-			       orig_path, read_error->message);
-			g_error_free (read_error);
-		}
-	}
-
-	new = nm_dhcp_dhclient_create_config (iface,
-	                                      addr_family,
-	                                      client_id,
-	                                      anycast_addr,
-	                                      hostname,
-	                                      timeout,
-	                                      use_fqdn,
-	                                      hostname_flags,
-	                                      mud_url,
-	                                      orig_path,
-	                                      orig,
-	                                      out_new_client_id);
-	nm_assert (new);
-
-	return g_file_set_contents (conf_file,
-	                            new,
-	                            -1,
-	                            error);
+    gs_free char *orig = NULL;
+    gs_free char *new  = NULL;
+
+    g_return_val_if_fail(iface, FALSE);
+    g_return_val_if_fail(conf_file, FALSE);
+
+    if (orig_path && g_file_test(orig_path, G_FILE_TEST_EXISTS)) {
+        GError *read_error = NULL;
+
+        if (!g_file_get_contents(orig_path, &orig, NULL, &read_error)) {
+            _LOGW("error reading dhclient configuration %s: %s", orig_path, read_error->message);
+            g_error_free(read_error);
+        }
+    }
+
+    new = nm_dhcp_dhclient_create_config(iface,
+                                         addr_family,
+                                         client_id,
+                                         anycast_addr,
+                                         hostname,
+                                         timeout,
+                                         use_fqdn,
+                                         hostname_flags,
+                                         mud_url,
+                                         reject_servers,
+                                         orig_path,
+                                         orig,
+                                         out_new_client_id);
+    nm_assert(new);
+
+    return g_file_set_contents(conf_file, new, -1, error);
 }
 
 static char *
-find_existing_config (NMDhcpDhclient *self, int addr_family, const char *iface, const char *uuid)
+find_existing_config(NMDhcpDhclient *self, int addr_family, const char *iface, const char *uuid)
 {
-	char *path;
-
-	/* NetworkManager-overridden configuration can be used to ship DHCP config
-	 * with NetworkManager itself. It can be uuid-specific, device-specific
-	 * or generic.
-	 */
-	if (uuid) {
-		path = g_strdup_printf (NMCONFDIR "/dhclient%s-%s.conf", _addr_family_to_path_part (addr_family), uuid);
-		_LOGD ("looking for existing config %s", path);
-		if (g_file_test (path, G_FILE_TEST_EXISTS))
-			return path;
-		g_free (path);
-	}
-
-	path = g_strdup_printf (NMCONFDIR "/dhclient%s-%s.conf", _addr_family_to_path_part (addr_family), iface);
-	_LOGD ("looking for existing config %s", path);
-	if (g_file_test (path, G_FILE_TEST_EXISTS))
-		return path;
-	g_free (path);
-
-	path = g_strdup_printf (NMCONFDIR "/dhclient%s.conf", _addr_family_to_path_part (addr_family));
-	_LOGD ("looking for existing config %s", path);
-	if (g_file_test (path, G_FILE_TEST_EXISTS))
-		return path;
-	g_free (path);
-
-	/* Distribution's dhclient configuration is used so that we can use
-	 * configuration shipped with dhclient (if any).
-	 *
-	 * This replaces conditional compilation based on distribution name. Fedora
-	 * and Debian store the configs in /etc/dhcp while upstream defaults to /etc
-	 * which is then used by many other distributions. Some distributions
-	 * (including Fedora) don't even provide a default configuration file.
-	 */
-	path = g_strdup_printf (SYSCONFDIR "/dhcp/dhclient%s-%s.conf", _addr_family_to_path_part (addr_family), iface);
-	_LOGD ("looking for existing config %s", path);
-	if (g_file_test (path, G_FILE_TEST_EXISTS))
-		return path;
-	g_free (path);
-
-	path = g_strdup_printf (SYSCONFDIR "/dhclient%s-%s.conf", _addr_family_to_path_part (addr_family), iface);
-	_LOGD ("looking for existing config %s", path);
-	if (g_file_test (path, G_FILE_TEST_EXISTS))
-		return path;
-	g_free (path);
-
-	path = g_strdup_printf (SYSCONFDIR "/dhcp/dhclient%s.conf", _addr_family_to_path_part (addr_family));
-	_LOGD ("looking for existing config %s", path);
-	if (g_file_test (path, G_FILE_TEST_EXISTS))
-		return path;
-	g_free (path);
-
-	path = g_strdup_printf (SYSCONFDIR "/dhclient%s.conf", _addr_family_to_path_part (addr_family));
-	_LOGD ("looking for existing config %s", path);
-	if (g_file_test (path, G_FILE_TEST_EXISTS))
-		return path;
-	g_free (path);
-
-	return NULL;
+    char *path;
+
+    /* NetworkManager-overridden configuration can be used to ship DHCP config
+     * with NetworkManager itself. It can be uuid-specific, device-specific
+     * or generic.
+     */
+    if (uuid) {
+        path = g_strdup_printf(NMCONFDIR "/dhclient%s-%s.conf",
+                               _addr_family_to_path_part(addr_family),
+                               uuid);
+        _LOGD("looking for existing config %s", path);
+        if (g_file_test(path, G_FILE_TEST_EXISTS))
+            return path;
+        g_free(path);
+    }
+
+    path = g_strdup_printf(NMCONFDIR "/dhclient%s-%s.conf",
+                           _addr_family_to_path_part(addr_family),
+                           iface);
+    _LOGD("looking for existing config %s", path);
+    if (g_file_test(path, G_FILE_TEST_EXISTS))
+        return path;
+    g_free(path);
+
+    path = g_strdup_printf(NMCONFDIR "/dhclient%s.conf", _addr_family_to_path_part(addr_family));
+    _LOGD("looking for existing config %s", path);
+    if (g_file_test(path, G_FILE_TEST_EXISTS))
+        return path;
+    g_free(path);
+
+    /* Distribution's dhclient configuration is used so that we can use
+     * configuration shipped with dhclient (if any).
+     *
+     * This replaces conditional compilation based on distribution name. Fedora
+     * and Debian store the configs in /etc/dhcp while upstream defaults to /etc
+     * which is then used by many other distributions. Some distributions
+     * (including Fedora) don't even provide a default configuration file.
+     */
+    path = g_strdup_printf(SYSCONFDIR "/dhcp/dhclient%s-%s.conf",
+                           _addr_family_to_path_part(addr_family),
+                           iface);
+    _LOGD("looking for existing config %s", path);
+    if (g_file_test(path, G_FILE_TEST_EXISTS))
+        return path;
+    g_free(path);
+
+    path = g_strdup_printf(SYSCONFDIR "/dhclient%s-%s.conf",
+                           _addr_family_to_path_part(addr_family),
+                           iface);
+    _LOGD("looking for existing config %s", path);
+    if (g_file_test(path, G_FILE_TEST_EXISTS))
+        return path;
+    g_free(path);
+
+    path =
+        g_strdup_printf(SYSCONFDIR "/dhcp/dhclient%s.conf", _addr_family_to_path_part(addr_family));
+    _LOGD("looking for existing config %s", path);
+    if (g_file_test(path, G_FILE_TEST_EXISTS))
+        return path;
+    g_free(path);
+
+    path = g_strdup_printf(SYSCONFDIR "/dhclient%s.conf", _addr_family_to_path_part(addr_family));
+    _LOGD("looking for existing config %s", path);
+    if (g_file_test(path, G_FILE_TEST_EXISTS))
+        return path;
+    g_free(path);
+
+    return NULL;
 }
 
 /* NM provides interface-specific options; thus the same dhclient config
@@ -260,451 +275,453 @@ find_existing_config (NMDhcpDhclient *self, int addr_family, const char *iface,
  * config file along with the NM options.
  */
 static char *
-create_dhclient_config (NMDhcpDhclient *self,
-                        int addr_family,
-                        const char *iface,
-                        const char *uuid,
-                        GBytes *client_id,
-                        const char *dhcp_anycast_addr,
-                        const char *hostname,
-                        guint32 timeout,
-                        gboolean use_fqdn,
-                        NMDhcpHostnameFlags hostname_flags,
-                        const char *mud_url,
-                        GBytes **out_new_client_id)
+create_dhclient_config(NMDhcpDhclient *    self,
+                       int                 addr_family,
+                       const char *        iface,
+                       const char *        uuid,
+                       GBytes *            client_id,
+                       const char *        dhcp_anycast_addr,
+                       const char *        hostname,
+                       guint32             timeout,
+                       gboolean            use_fqdn,
+                       NMDhcpHostnameFlags hostname_flags,
+                       const char *        mud_url,
+                       const char *const * reject_servers,
+                       GBytes **           out_new_client_id)
 {
-	gs_free char *orig = NULL;
-	char *new = NULL;
-	GError *error = NULL;
-
-	g_return_val_if_fail (iface != NULL, NULL);
-
-	new = g_strdup_printf (NMSTATEDIR "/dhclient%s-%s.conf", _addr_family_to_path_part (addr_family), iface);
-
-	_LOGD ("creating composite dhclient config %s", new);
-
-	orig = find_existing_config (self, addr_family, iface, uuid);
-	if (orig)
-		_LOGD ("merging existing dhclient config %s", orig);
-	else
-		_LOGD ("no existing dhclient configuration to merge");
-
-	if (!merge_dhclient_config (self,
-	                            addr_family,
-	                            iface,
-	                            new,
-	                            client_id,
-	                            dhcp_anycast_addr,
-	                            hostname,
-	                            timeout,
-	                            use_fqdn,
-	                            hostname_flags,
-	                            mud_url,
-	                            orig,
-	                            out_new_client_id,
-	                            &error)) {
-		_LOGW ("error creating dhclient configuration: %s", error->message);
-		g_clear_error (&error);
-	}
-
-	return new;
+    gs_free char *orig = NULL;
+    char *new          = NULL;
+    GError *error      = NULL;
+
+    g_return_val_if_fail(iface != NULL, NULL);
+
+    new = g_strdup_printf(NMSTATEDIR "/dhclient%s-%s.conf",
+                          _addr_family_to_path_part(addr_family),
+                          iface);
+
+    _LOGD("creating composite dhclient config %s", new);
+
+    orig = find_existing_config(self, addr_family, iface, uuid);
+    if (orig)
+        _LOGD("merging existing dhclient config %s", orig);
+    else
+        _LOGD("no existing dhclient configuration to merge");
+
+    if (!merge_dhclient_config(self,
+                               addr_family,
+                               iface,
+                               new,
+                               client_id,
+                               dhcp_anycast_addr,
+                               hostname,
+                               timeout,
+                               use_fqdn,
+                               hostname_flags,
+                               mud_url,
+                               reject_servers,
+                               orig,
+                               out_new_client_id,
+                               &error)) {
+        _LOGW("error creating dhclient configuration: %s", error->message);
+        g_clear_error(&error);
+    }
+
+    return new;
 }
 
 static gboolean
-dhclient_start (NMDhcpClient *client,
-                const char *mode_opt,
-                gboolean release,
-                pid_t *out_pid,
-                int prefixes,
-                GError **error)
+dhclient_start(NMDhcpClient *client,
+               const char *  mode_opt,
+               gboolean      release,
+               pid_t *       out_pid,
+               int           prefixes,
+               GError **     error)
 {
-	NMDhcpDhclient *self = NM_DHCP_DHCLIENT (client);
-	NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE (self);
-	gs_unref_ptrarray GPtrArray *argv = NULL;
-	pid_t pid;
-	gs_free_error GError *local = NULL;
-	const char *iface;
-	const char *uuid;
-	const char *system_bus_address;
-	const char *dhclient_path;
-	char *binary_name;
-	gs_free char *cmd_str = NULL;
-	gs_free char *pid_file = NULL;
-	gs_free char *system_bus_address_env = NULL;
-	gs_free char *preferred_leasefile_path = NULL;
-	const int addr_family = nm_dhcp_client_get_addr_family (client);
-
-	g_return_val_if_fail (!priv->pid_file, FALSE);
-
-	NM_SET_OUT (out_pid, 0);
-
-	dhclient_path = nm_dhcp_dhclient_get_path ();
-	if (!dhclient_path) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "dhclient binary not found");
-		return FALSE;
-	}
-
-	iface = nm_dhcp_client_get_iface (client);
-	uuid = nm_dhcp_client_get_uuid (client);
-
-	pid_file = g_strdup_printf (NMRUNDIR "/dhclient%s-%s.pid",
-	                            _addr_family_to_path_part (addr_family),
-	                            iface);
-
-	/* Kill any existing dhclient from the pidfile */
-	binary_name = g_path_get_basename (dhclient_path);
-	nm_dhcp_client_stop_existing (pid_file, binary_name);
-	g_free (binary_name);
-
-	if (release) {
-		/* release doesn't use the pidfile after killing an old client */
-		nm_clear_g_free (&pid_file);
-	}
-
-	g_free (priv->lease_file);
-	priv->lease_file = get_dhclient_leasefile (addr_family, iface, uuid, &preferred_leasefile_path);
-	nm_assert (preferred_leasefile_path);
-	if (!priv->lease_file) {
-		/* No existing leasefile, dhclient will create one at the preferred path */
-		priv->lease_file = g_steal_pointer (&preferred_leasefile_path);
-	} else if (!nm_streq0 (priv->lease_file, preferred_leasefile_path)) {
-		gs_unref_object GFile *src = g_file_new_for_path (priv->lease_file);
-		gs_unref_object GFile *dst = g_file_new_for_path (preferred_leasefile_path);
-
-		/* Try to copy the existing leasefile to the preferred location */
-		if (!g_file_copy (src, dst, G_FILE_COPY_OVERWRITE, NULL, NULL, NULL, &local)) {
-			gs_free char *s_path = NULL;
-			gs_free char *d_path = NULL;
-
-			/* Failure; just use the existing leasefile */
-			_LOGW ("failed to copy leasefile %s to %s: %s",
-			       (s_path = g_file_get_path (src)),
-			       (d_path = g_file_get_path (dst)),
-			       local->message);
-			g_clear_error (&local);
-		} else {
-			/* Success; use the preferred leasefile path */
-			g_free (priv->lease_file);
-			priv->lease_file = g_file_get_path (dst);
-		}
-	}
-
-	/* Save the DUID to the leasefile dhclient will actually use */
-	if (addr_family == AF_INET6) {
-		if (!nm_dhcp_dhclient_save_duid (priv->lease_file,
-		                                 nm_dhcp_client_get_client_id (client),
-		                                 &local)) {
-			nm_utils_error_set (error,
-			                    NM_UTILS_ERROR_UNKNOWN,
-			                    "failed to save DUID to '%s': %s",
-			                    priv->lease_file,
-			                    local->message);
-			return FALSE;
-		}
-	}
-
-	argv = g_ptr_array_new ();
-	g_ptr_array_add (argv, (gpointer) dhclient_path);
-
-	g_ptr_array_add (argv, (gpointer) "-d");
-
-	/* Be quiet. dhclient logs to syslog anyway. And we duplicate the syslog
-	 * to stderr in case of NM running with --debug.
-	 */
-	g_ptr_array_add (argv, (gpointer) "-q");
-
-	if (release)
-		g_ptr_array_add (argv, (gpointer) "-r");
-
-	if (addr_family == AF_INET6) {
-		g_ptr_array_add (argv, (gpointer) "-6");
-		if (mode_opt)
-			g_ptr_array_add (argv, (gpointer) mode_opt);
-		while (prefixes--)
-			g_ptr_array_add (argv, (gpointer) "-P");
-	}
-	g_ptr_array_add (argv, (gpointer) "-sf"); /* Set script file */
-	g_ptr_array_add (argv, (gpointer) nm_dhcp_helper_path);
-
-	if (pid_file) {
-		g_ptr_array_add (argv, (gpointer) "-pf"); /* Set pid file */
-		g_ptr_array_add (argv, (gpointer) pid_file);
-	}
-
-	g_ptr_array_add (argv, (gpointer) "-lf"); /* Set lease file */
-	g_ptr_array_add (argv, (gpointer) priv->lease_file);
-
-	if (priv->conf_file) {
-		g_ptr_array_add (argv, (gpointer) "-cf"); /* Set interface config file */
-		g_ptr_array_add (argv, (gpointer) priv->conf_file);
-	}
-
-	/* Usually the system bus address is well-known; but if it's supposed
-	 * to be something else, we need to push it to dhclient, since dhclient
-	 * sanitizes the environment it gives the action scripts.
-	 */
-	system_bus_address = getenv ("DBUS_SYSTEM_BUS_ADDRESS");
-	if (system_bus_address) {
-		system_bus_address_env = g_strdup_printf ("DBUS_SYSTEM_BUS_ADDRESS=%s", system_bus_address);
-		g_ptr_array_add (argv, (gpointer) "-e");
-		g_ptr_array_add (argv, (gpointer) system_bus_address_env);
-	}
-
-	g_ptr_array_add (argv, (gpointer) iface);
-	g_ptr_array_add (argv, NULL);
-
-	_LOGD ("running: %s",
-	       (cmd_str = g_strjoinv (" ", (char **) argv->pdata)));
-
-	if (!g_spawn_async (NULL, (char **) argv->pdata, NULL,
-	                    G_SPAWN_DO_NOT_REAP_CHILD | G_SPAWN_STDOUT_TO_DEV_NULL | G_SPAWN_STDERR_TO_DEV_NULL,
-	                    nm_utils_setpgid, NULL, &pid, &local)) {
-		nm_utils_error_set (error,
-		                    NM_UTILS_ERROR_UNKNOWN,
-		                    "dhclient failed to start: %s",
-		                    local->message);
-		return FALSE;
-	}
-
-	_LOGI ("dhclient started with pid %lld", (long long int) pid);
-
-	if (!release)
-		nm_dhcp_client_watch_child (client, pid);
-
-	priv->pid_file = g_steal_pointer (&pid_file);
-
-	NM_SET_OUT (out_pid, pid);
-	return TRUE;
+    NMDhcpDhclient *       self       = NM_DHCP_DHCLIENT(client);
+    NMDhcpDhclientPrivate *priv       = NM_DHCP_DHCLIENT_GET_PRIVATE(self);
+    gs_unref_ptrarray GPtrArray *argv = NULL;
+    pid_t                        pid;
+    gs_free_error GError *local = NULL;
+    const char *          iface;
+    const char *          uuid;
+    const char *          system_bus_address;
+    const char *          dhclient_path;
+    char *                binary_name;
+    gs_free char *        cmd_str                  = NULL;
+    gs_free char *        pid_file                 = NULL;
+    gs_free char *        system_bus_address_env   = NULL;
+    gs_free char *        preferred_leasefile_path = NULL;
+    const int             addr_family              = nm_dhcp_client_get_addr_family(client);
+
+    g_return_val_if_fail(!priv->pid_file, FALSE);
+
+    NM_SET_OUT(out_pid, 0);
+
+    dhclient_path = nm_dhcp_dhclient_get_path();
+    if (!dhclient_path) {
+        nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "dhclient binary not found");
+        return FALSE;
+    }
+
+    iface = nm_dhcp_client_get_iface(client);
+    uuid  = nm_dhcp_client_get_uuid(client);
+
+    pid_file = g_strdup_printf(NMRUNDIR "/dhclient%s-%s.pid",
+                               _addr_family_to_path_part(addr_family),
+                               iface);
+
+    /* Kill any existing dhclient from the pidfile */
+    binary_name = g_path_get_basename(dhclient_path);
+    nm_dhcp_client_stop_existing(pid_file, binary_name);
+    g_free(binary_name);
+
+    if (release) {
+        /* release doesn't use the pidfile after killing an old client */
+        nm_clear_g_free(&pid_file);
+    }
+
+    g_free(priv->lease_file);
+    priv->lease_file = get_dhclient_leasefile(addr_family, iface, uuid, &preferred_leasefile_path);
+    nm_assert(preferred_leasefile_path);
+    if (!priv->lease_file) {
+        /* No existing leasefile, dhclient will create one at the preferred path */
+        priv->lease_file = g_steal_pointer(&preferred_leasefile_path);
+    } else if (!nm_streq0(priv->lease_file, preferred_leasefile_path)) {
+        gs_unref_object GFile *src = g_file_new_for_path(priv->lease_file);
+        gs_unref_object GFile *dst = g_file_new_for_path(preferred_leasefile_path);
+
+        /* Try to copy the existing leasefile to the preferred location */
+        if (!g_file_copy(src, dst, G_FILE_COPY_OVERWRITE, NULL, NULL, NULL, &local)) {
+            gs_free char *s_path = NULL;
+            gs_free char *d_path = NULL;
+
+            /* Failure; just use the existing leasefile */
+            _LOGW("failed to copy leasefile %s to %s: %s",
+                  (s_path = g_file_get_path(src)),
+                  (d_path = g_file_get_path(dst)),
+                  local->message);
+            g_clear_error(&local);
+        } else {
+            /* Success; use the preferred leasefile path */
+            g_free(priv->lease_file);
+            priv->lease_file = g_file_get_path(dst);
+        }
+    }
+
+    /* Save the DUID to the leasefile dhclient will actually use */
+    if (addr_family == AF_INET6) {
+        if (!nm_dhcp_dhclient_save_duid(priv->lease_file,
+                                        nm_dhcp_client_get_client_id(client),
+                                        &local)) {
+            nm_utils_error_set(error,
+                               NM_UTILS_ERROR_UNKNOWN,
+                               "failed to save DUID to '%s': %s",
+                               priv->lease_file,
+                               local->message);
+            return FALSE;
+        }
+    }
+
+    argv = g_ptr_array_new();
+    g_ptr_array_add(argv, (gpointer) dhclient_path);
+
+    g_ptr_array_add(argv, (gpointer) "-d");
+
+    /* Be quiet. dhclient logs to syslog anyway. And we duplicate the syslog
+     * to stderr in case of NM running with --debug.
+     */
+    g_ptr_array_add(argv, (gpointer) "-q");
+
+    if (release)
+        g_ptr_array_add(argv, (gpointer) "-r");
+
+    if (addr_family == AF_INET6) {
+        g_ptr_array_add(argv, (gpointer) "-6");
+        if (mode_opt)
+            g_ptr_array_add(argv, (gpointer) mode_opt);
+        while (prefixes--)
+            g_ptr_array_add(argv, (gpointer) "-P");
+    }
+    g_ptr_array_add(argv, (gpointer) "-sf"); /* Set script file */
+    g_ptr_array_add(argv, (gpointer) nm_dhcp_helper_path);
+
+    if (pid_file) {
+        g_ptr_array_add(argv, (gpointer) "-pf"); /* Set pid file */
+        g_ptr_array_add(argv, (gpointer) pid_file);
+    }
+
+    g_ptr_array_add(argv, (gpointer) "-lf"); /* Set lease file */
+    g_ptr_array_add(argv, (gpointer) priv->lease_file);
+
+    if (priv->conf_file) {
+        g_ptr_array_add(argv, (gpointer) "-cf"); /* Set interface config file */
+        g_ptr_array_add(argv, (gpointer) priv->conf_file);
+    }
+
+    /* Usually the system bus address is well-known; but if it's supposed
+     * to be something else, we need to push it to dhclient, since dhclient
+     * sanitizes the environment it gives the action scripts.
+     */
+    system_bus_address = getenv("DBUS_SYSTEM_BUS_ADDRESS");
+    if (system_bus_address) {
+        system_bus_address_env = g_strdup_printf("DBUS_SYSTEM_BUS_ADDRESS=%s", system_bus_address);
+        g_ptr_array_add(argv, (gpointer) "-e");
+        g_ptr_array_add(argv, (gpointer) system_bus_address_env);
+    }
+
+    g_ptr_array_add(argv, (gpointer) iface);
+    g_ptr_array_add(argv, NULL);
+
+    _LOGD("running: %s", (cmd_str = g_strjoinv(" ", (char **) argv->pdata)));
+
+    if (!g_spawn_async(NULL,
+                       (char **) argv->pdata,
+                       NULL,
+                       G_SPAWN_DO_NOT_REAP_CHILD | G_SPAWN_STDOUT_TO_DEV_NULL
+                           | G_SPAWN_STDERR_TO_DEV_NULL,
+                       nm_utils_setpgid,
+                       NULL,
+                       &pid,
+                       &local)) {
+        nm_utils_error_set(error,
+                           NM_UTILS_ERROR_UNKNOWN,
+                           "dhclient failed to start: %s",
+                           local->message);
+        return FALSE;
+    }
+
+    _LOGI("dhclient started with pid %lld", (long long int) pid);
+
+    if (!release)
+        nm_dhcp_client_watch_child(client, pid);
+
+    priv->pid_file = g_steal_pointer(&pid_file);
+
+    NM_SET_OUT(out_pid, pid);
+    return TRUE;
 }
 
 static gboolean
-ip4_start (NMDhcpClient *client,
-           const char *dhcp_anycast_addr,
-           const char *last_ip4_address,
-           GError **error)
+ip4_start(NMDhcpClient *client,
+          const char *  dhcp_anycast_addr,
+          const char *  last_ip4_address,
+          GError **     error)
 {
-	NMDhcpDhclient *self = NM_DHCP_DHCLIENT (client);
-	NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE (self);
-	GBytes *client_id;
-	gs_unref_bytes GBytes *new_client_id = NULL;
-
-	client_id = nm_dhcp_client_get_client_id (client);
-
-	priv->conf_file = create_dhclient_config (self,
-	                                          AF_INET,
-	                                          nm_dhcp_client_get_iface (client),
-	                                          nm_dhcp_client_get_uuid (client),
-	                                          client_id,
-	                                          dhcp_anycast_addr,
-	                                          nm_dhcp_client_get_hostname (client),
-	                                          nm_dhcp_client_get_timeout (client),
-	                                          nm_dhcp_client_get_use_fqdn (client),
-	                                          nm_dhcp_client_get_hostname_flags (client),
-	                                          nm_dhcp_client_get_mud_url (client),
-	                                          &new_client_id);
-	if (!priv->conf_file) {
-		nm_utils_error_set_literal (error,
-		                            NM_UTILS_ERROR_UNKNOWN,
-		                            "error creating dhclient configuration file");
-		return FALSE;
-	}
-
-	if (new_client_id) {
-		nm_assert (!client_id);
-		nm_dhcp_client_set_client_id (client, new_client_id);
-	}
-	return dhclient_start (client,
-	                       NULL,
-	                       FALSE,
-	                       NULL,
-	                       0,
-	                       error);
+    NMDhcpDhclient *       self = NM_DHCP_DHCLIENT(client);
+    NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE(self);
+    GBytes *               client_id;
+    gs_unref_bytes GBytes *new_client_id = NULL;
+
+    client_id = nm_dhcp_client_get_client_id(client);
+
+    priv->conf_file = create_dhclient_config(self,
+                                             AF_INET,
+                                             nm_dhcp_client_get_iface(client),
+                                             nm_dhcp_client_get_uuid(client),
+                                             client_id,
+                                             dhcp_anycast_addr,
+                                             nm_dhcp_client_get_hostname(client),
+                                             nm_dhcp_client_get_timeout(client),
+                                             nm_dhcp_client_get_use_fqdn(client),
+                                             nm_dhcp_client_get_hostname_flags(client),
+                                             nm_dhcp_client_get_mud_url(client),
+                                             nm_dhcp_client_get_reject_servers(client),
+                                             &new_client_id);
+    if (!priv->conf_file) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_UNKNOWN,
+                                   "error creating dhclient configuration file");
+        return FALSE;
+    }
+
+    if (new_client_id) {
+        nm_assert(!client_id);
+        nm_dhcp_client_set_client_id(client, new_client_id);
+    }
+    return dhclient_start(client, NULL, FALSE, NULL, 0, error);
 }
 
 static gboolean
-ip6_start (NMDhcpClient *client,
-           const char *dhcp_anycast_addr,
-           const struct in6_addr *ll_addr,
-           NMSettingIP6ConfigPrivacy privacy,
-           guint needed_prefixes,
-           GError **error)
+ip6_start(NMDhcpClient *            client,
+          const char *              dhcp_anycast_addr,
+          const struct in6_addr *   ll_addr,
+          NMSettingIP6ConfigPrivacy privacy,
+          guint                     needed_prefixes,
+          GError **                 error)
 {
-	NMDhcpDhclient *self = NM_DHCP_DHCLIENT (client);
-	NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE (self);
-
-	if (nm_dhcp_client_get_iaid_explicit (client))
-		_LOGW ("dhclient does not support specifying an IAID for DHCPv6, it will be ignored");
-
-	priv->conf_file = create_dhclient_config (self,
-	                                          AF_INET6,
-	                                          nm_dhcp_client_get_iface (client),
-	                                          nm_dhcp_client_get_uuid (client),
-	                                          NULL,
-	                                          dhcp_anycast_addr,
-	                                          nm_dhcp_client_get_hostname (client),
-	                                          nm_dhcp_client_get_timeout (client),
-	                                          TRUE,
-	                                          nm_dhcp_client_get_hostname_flags (client),
-	                                          nm_dhcp_client_get_mud_url (client),
-	                                          NULL);
-	if (!priv->conf_file) {
-		nm_utils_error_set_literal (error,
-		                            NM_UTILS_ERROR_UNKNOWN,
-		                            "error creating dhclient configuration file");
-		return FALSE;
-	}
-
-	return dhclient_start (client,
-	                       nm_dhcp_client_get_info_only (NM_DHCP_CLIENT (self))
-	                         ? "-S"
-	                         : "-N",
-	                       FALSE,
-	                       NULL,
-	                       needed_prefixes,
-	                       error);
+    NMDhcpDhclient *       self = NM_DHCP_DHCLIENT(client);
+    NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE(self);
+
+    if (nm_dhcp_client_get_iaid_explicit(client))
+        _LOGW("dhclient does not support specifying an IAID for DHCPv6, it will be ignored");
+
+    priv->conf_file = create_dhclient_config(self,
+                                             AF_INET6,
+                                             nm_dhcp_client_get_iface(client),
+                                             nm_dhcp_client_get_uuid(client),
+                                             NULL,
+                                             dhcp_anycast_addr,
+                                             nm_dhcp_client_get_hostname(client),
+                                             nm_dhcp_client_get_timeout(client),
+                                             TRUE,
+                                             nm_dhcp_client_get_hostname_flags(client),
+                                             nm_dhcp_client_get_mud_url(client),
+                                             NULL,
+                                             NULL);
+    if (!priv->conf_file) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_UNKNOWN,
+                                   "error creating dhclient configuration file");
+        return FALSE;
+    }
+
+    return dhclient_start(client,
+                          nm_dhcp_client_get_info_only(NM_DHCP_CLIENT(self)) ? "-S" : "-N",
+                          FALSE,
+                          NULL,
+                          needed_prefixes,
+                          error);
 }
 
 static void
-stop (NMDhcpClient *client, gboolean release)
+stop(NMDhcpClient *client, gboolean release)
 {
-	NMDhcpDhclient *self = NM_DHCP_DHCLIENT (client);
-	NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE (self);
-	int errsv;
-
-	NM_DHCP_CLIENT_CLASS (nm_dhcp_dhclient_parent_class)->stop (client, release);
-
-	if (priv->conf_file)
-		if (remove (priv->conf_file) == -1) {
-			errsv = errno;
-			_LOGD ("could not remove dhcp config file \"%s\": %d (%s)", priv->conf_file, errsv, nm_strerror_native (errsv));
-		}
-	if (priv->pid_file) {
-		if (remove (priv->pid_file) == -1) {
-			errsv = errno;
-			_LOGD ("could not remove dhcp pid file \"%s\": %s (%d)", priv->pid_file, nm_strerror_native (errsv), errsv);
-		}
-		nm_clear_g_free (&priv->pid_file);
-	}
-
-	if (release) {
-		pid_t rpid = -1;
-
-		if (dhclient_start (client,
-		                    NULL,
-		                    TRUE,
-		                    &rpid,
-		                    0,
-		                    NULL)) {
-			/* Wait a few seconds for the release to happen */
-			nm_dhcp_client_stop_pid (rpid, nm_dhcp_client_get_iface (client));
-		}
-	}
+    NMDhcpDhclient *       self = NM_DHCP_DHCLIENT(client);
+    NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE(self);
+    int                    errsv;
+
+    NM_DHCP_CLIENT_CLASS(nm_dhcp_dhclient_parent_class)->stop(client, release);
+
+    if (priv->conf_file)
+        if (remove(priv->conf_file) == -1) {
+            errsv = errno;
+            _LOGD("could not remove dhcp config file \"%s\": %d (%s)",
+                  priv->conf_file,
+                  errsv,
+                  nm_strerror_native(errsv));
+        }
+    if (priv->pid_file) {
+        if (remove(priv->pid_file) == -1) {
+            errsv = errno;
+            _LOGD("could not remove dhcp pid file \"%s\": %s (%d)",
+                  priv->pid_file,
+                  nm_strerror_native(errsv),
+                  errsv);
+        }
+        nm_clear_g_free(&priv->pid_file);
+    }
+
+    if (release) {
+        pid_t rpid = -1;
+
+        if (dhclient_start(client, NULL, TRUE, &rpid, 0, NULL)) {
+            /* Wait a few seconds for the release to happen */
+            nm_dhcp_client_stop_pid(rpid, nm_dhcp_client_get_iface(client));
+        }
+    }
 }
 
 static GBytes *
-get_duid (NMDhcpClient *client)
+get_duid(NMDhcpClient *client)
 {
-	NMDhcpDhclient *self = NM_DHCP_DHCLIENT (client);
-	NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE (self);
-	GBytes *duid = NULL;
-	gs_free char *leasefile = NULL;
-	GError *error = NULL;
-
-	/* Look in interface-specific leasefile first for backwards compat */
-	leasefile = get_dhclient_leasefile (AF_INET6,
-	                                    nm_dhcp_client_get_iface (client),
-	                                    nm_dhcp_client_get_uuid (client),
-	                                    NULL);
-	if (leasefile) {
-		_LOGD ("looking for DUID in '%s'", leasefile);
-		duid = nm_dhcp_dhclient_read_duid (leasefile, &error);
-		if (error) {
-			_LOGW ("failed to read leasefile '%s': %s",
-			       leasefile, error->message);
-			g_clear_error (&error);
-		}
-		if (duid)
-			return duid;
-	}
-
-	/* Otherwise read the default machine-wide DUID */
-	_LOGD ("looking for default DUID in '%s'", priv->def_leasefile);
-	duid = nm_dhcp_dhclient_read_duid (priv->def_leasefile, &error);
-	if (error) {
-		_LOGW ("failed to read leasefile '%s': %s",
-		        priv->def_leasefile,
-		        error->message);
-		g_clear_error (&error);
-	}
-
-	return duid;
+    NMDhcpDhclient *       self      = NM_DHCP_DHCLIENT(client);
+    NMDhcpDhclientPrivate *priv      = NM_DHCP_DHCLIENT_GET_PRIVATE(self);
+    GBytes *               duid      = NULL;
+    gs_free char *         leasefile = NULL;
+    GError *               error     = NULL;
+
+    /* Look in interface-specific leasefile first for backwards compat */
+    leasefile = get_dhclient_leasefile(AF_INET6,
+                                       nm_dhcp_client_get_iface(client),
+                                       nm_dhcp_client_get_uuid(client),
+                                       NULL);
+    if (leasefile) {
+        _LOGD("looking for DUID in '%s'", leasefile);
+        duid = nm_dhcp_dhclient_read_duid(leasefile, &error);
+        if (error) {
+            _LOGW("failed to read leasefile '%s': %s", leasefile, error->message);
+            g_clear_error(&error);
+        }
+        if (duid)
+            return duid;
+    }
+
+    /* Otherwise, read the default machine-wide DUID */
+    _LOGD("looking for default DUID in '%s'", priv->def_leasefile);
+    duid = nm_dhcp_dhclient_read_duid(priv->def_leasefile, &error);
+    if (error) {
+        _LOGW("failed to read leasefile '%s': %s", priv->def_leasefile, error->message);
+        g_clear_error(&error);
+    }
+
+    return duid;
 }
 
 /*****************************************************************************/
 
 static void
-nm_dhcp_dhclient_init (NMDhcpDhclient *self)
+nm_dhcp_dhclient_init(NMDhcpDhclient *self)
 {
-	static const char *const FILES[] = {
-		SYSCONFDIR "/dhclient6.leases", /* default */
-		LOCALSTATEDIR "/lib/dhcp/dhclient6.leases",
-		LOCALSTATEDIR "/lib/dhclient/dhclient6.leases",
-	};
-	NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE (self);
-	int i;
-
-	priv->def_leasefile = FILES[0];
-	for (i = 0; i < G_N_ELEMENTS (FILES); i++) {
-		if (g_file_test (FILES[i], G_FILE_TEST_EXISTS)) {
-			priv->def_leasefile = FILES[i];
-			break;
-		}
-	}
-
-	priv->dhcp_listener = g_object_ref (nm_dhcp_listener_get ());
-	g_signal_connect (priv->dhcp_listener,
-	                  NM_DHCP_LISTENER_EVENT,
-	                  G_CALLBACK (nm_dhcp_client_handle_event),
-	                  self);
+    static const char *const FILES[] = {
+        SYSCONFDIR "/dhclient6.leases", /* default */
+        LOCALSTATEDIR "/lib/dhcp/dhclient6.leases",
+        LOCALSTATEDIR "/lib/dhclient/dhclient6.leases",
+    };
+    NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE(self);
+    int                    i;
+
+    priv->def_leasefile = FILES[0];
+    for (i = 0; i < G_N_ELEMENTS(FILES); i++) {
+        if (g_file_test(FILES[i], G_FILE_TEST_EXISTS)) {
+            priv->def_leasefile = FILES[i];
+            break;
+        }
+    }
+
+    priv->dhcp_listener = g_object_ref(nm_dhcp_listener_get());
+    g_signal_connect(priv->dhcp_listener,
+                     NM_DHCP_LISTENER_EVENT,
+                     G_CALLBACK(nm_dhcp_client_handle_event),
+                     self);
 }
 
 static void
-dispose (GObject *object)
+dispose(GObject *object)
 {
-	NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE (object);
+    NMDhcpDhclientPrivate *priv = NM_DHCP_DHCLIENT_GET_PRIVATE(object);
 
-	if (priv->dhcp_listener) {
-		g_signal_handlers_disconnect_by_func (priv->dhcp_listener,
-		                                      G_CALLBACK (nm_dhcp_client_handle_event),
-		                                      NM_DHCP_DHCLIENT (object));
-		g_clear_object (&priv->dhcp_listener);
-	}
+    if (priv->dhcp_listener) {
+        g_signal_handlers_disconnect_by_func(priv->dhcp_listener,
+                                             G_CALLBACK(nm_dhcp_client_handle_event),
+                                             NM_DHCP_DHCLIENT(object));
+        g_clear_object(&priv->dhcp_listener);
+    }
 
-	nm_clear_g_free (&priv->pid_file);
-	nm_clear_g_free (&priv->conf_file);
-	nm_clear_g_free (&priv->lease_file);
+    nm_clear_g_free(&priv->pid_file);
+    nm_clear_g_free(&priv->conf_file);
+    nm_clear_g_free(&priv->lease_file);
 
-	G_OBJECT_CLASS (nm_dhcp_dhclient_parent_class)->dispose (object);
+    G_OBJECT_CLASS(nm_dhcp_dhclient_parent_class)->dispose(object);
 }
 
 static void
-nm_dhcp_dhclient_class_init (NMDhcpDhclientClass *dhclient_class)
+nm_dhcp_dhclient_class_init(NMDhcpDhclientClass *dhclient_class)
 {
-	NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS (dhclient_class);
-	GObjectClass *object_class = G_OBJECT_CLASS (dhclient_class);
+    NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS(dhclient_class);
+    GObjectClass *     object_class = G_OBJECT_CLASS(dhclient_class);
 
-	object_class->dispose = dispose;
+    object_class->dispose = dispose;
 
-	client_class->ip4_start = ip4_start;
-	client_class->ip6_start = ip6_start;
-	client_class->stop = stop;
-	client_class->get_duid = get_duid;
+    client_class->ip4_start = ip4_start;
+    client_class->ip6_start = ip6_start;
+    client_class->stop      = stop;
+    client_class->get_duid  = get_duid;
 }
 
 const NMDhcpClientFactory _nm_dhcp_client_factory_dhclient = {
-	.name     = "dhclient",
-	.get_type = nm_dhcp_dhclient_get_type,
-	.get_path = nm_dhcp_dhclient_get_path,
+    .name     = "dhclient",
+    .get_type = nm_dhcp_dhclient_get_type,
+    .get_path = nm_dhcp_dhclient_get_path,
 };
 
 #endif /* WITH_DHCLIENT */
diff --git a/src/dhcp/nm-dhcp-dhcpcanon.c b/src/dhcp/nm-dhcp-dhcpcanon.c
index 63484a4b..8e61b6e5 100644
--- a/src/dhcp/nm-dhcp-dhcpcanon.c
+++ b/src/dhcp/nm-dhcp-dhcpcanon.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2017 juga <juga at riseup dot net>
  */
@@ -7,236 +7,237 @@
 
 #if WITH_DHCPCANON
 
-#include <stdlib.h>
-#include <unistd.h>
-
-#include "nm-utils.h"
-#include "nm-dhcp-manager.h"
-#include "NetworkManagerUtils.h"
-#include "nm-dhcp-listener.h"
-#include "nm-dhcp-client-logging.h"
-
-#define NM_TYPE_DHCP_DHCPCANON            (nm_dhcp_dhcpcanon_get_type ())
-#define NM_DHCP_DHCPCANON(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_DHCP_DHCPCANON, NMDhcpDhcpcanon))
-#define NM_DHCP_DHCPCANON_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_DHCP_DHCPCANON, NMDhcpDhcpcanonClass))
-#define NM_IS_DHCP_DHCPCANON(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_DHCP_DHCPCANON))
-#define NM_IS_DHCP_DHCPCANON_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_DHCP_DHCPCANON))
-#define NM_DHCP_DHCPCANON_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_DHCP_DHCPCANON, NMDhcpDhcpcanonClass))
-
-typedef struct _NMDhcpDhcpcanon NMDhcpDhcpcanon;
+    #include <stdlib.h>
+    #include <unistd.h>
+
+    #include "nm-utils.h"
+    #include "nm-dhcp-manager.h"
+    #include "NetworkManagerUtils.h"
+    #include "nm-dhcp-listener.h"
+    #include "nm-dhcp-client-logging.h"
+
+    #define NM_TYPE_DHCP_DHCPCANON (nm_dhcp_dhcpcanon_get_type())
+    #define NM_DHCP_DHCPCANON(obj) \
+        (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_DHCP_DHCPCANON, NMDhcpDhcpcanon))
+    #define NM_DHCP_DHCPCANON_CLASS(klass) \
+        (G_TYPE_CHECK_CLASS_CAST((klass), NM_TYPE_DHCP_DHCPCANON, NMDhcpDhcpcanonClass))
+    #define NM_IS_DHCP_DHCPCANON(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_DHCP_DHCPCANON))
+    #define NM_IS_DHCP_DHCPCANON_CLASS(klass) \
+        (G_TYPE_CHECK_CLASS_TYPE((klass), NM_TYPE_DHCP_DHCPCANON))
+    #define NM_DHCP_DHCPCANON_GET_CLASS(obj) \
+        (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_DHCP_DHCPCANON, NMDhcpDhcpcanonClass))
+
+typedef struct _NMDhcpDhcpcanon      NMDhcpDhcpcanon;
 typedef struct _NMDhcpDhcpcanonClass NMDhcpDhcpcanonClass;
 
-static GType nm_dhcp_dhcpcanon_get_type (void);
+static GType nm_dhcp_dhcpcanon_get_type(void);
 
 /*****************************************************************************/
 
 typedef struct {
-	char *conf_file;
-	const char *def_leasefile;
-	char *lease_file;
-	char *pid_file;
-	NMDhcpListener *dhcp_listener;
+    char *          conf_file;
+    const char *    def_leasefile;
+    char *          lease_file;
+    char *          pid_file;
+    NMDhcpListener *dhcp_listener;
 } NMDhcpDhcpcanonPrivate;
 
 struct _NMDhcpDhcpcanon {
-	NMDhcpClient parent;
-	NMDhcpDhcpcanonPrivate _priv;
+    NMDhcpClient           parent;
+    NMDhcpDhcpcanonPrivate _priv;
 };
 
 struct _NMDhcpDhcpcanonClass {
-	NMDhcpClientClass parent;
+    NMDhcpClientClass parent;
 };
 
-G_DEFINE_TYPE (NMDhcpDhcpcanon, nm_dhcp_dhcpcanon, NM_TYPE_DHCP_CLIENT)
+G_DEFINE_TYPE(NMDhcpDhcpcanon, nm_dhcp_dhcpcanon, NM_TYPE_DHCP_CLIENT)
 
-#define NM_DHCP_DHCPCANON_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDhcpDhcpcanon, NM_IS_DHCP_DHCPCANON)
+    #define NM_DHCP_DHCPCANON_GET_PRIVATE(self) \
+        _NM_GET_PRIVATE(self, NMDhcpDhcpcanon, NM_IS_DHCP_DHCPCANON)
 
 /*****************************************************************************/
 
 static const char *
-nm_dhcp_dhcpcanon_get_path (void)
+nm_dhcp_dhcpcanon_get_path(void)
 {
-	return nm_utils_find_helper ("dhcpcanon", DHCPCANON_PATH, NULL);
+    return nm_utils_find_helper("dhcpcanon", DHCPCANON_PATH, NULL);
 }
 
 static gboolean
-dhcpcanon_start (NMDhcpClient *client,
-                const char *mode_opt,
-                GBytes *duid,
-                gboolean release,
-                pid_t *out_pid,
-                guint needed_prefixes,
-                GError **error)
+dhcpcanon_start(NMDhcpClient *client,
+                const char *  mode_opt,
+                GBytes *      duid,
+                gboolean      release,
+                pid_t *       out_pid,
+                guint         needed_prefixes,
+                GError **     error)
 {
-	NMDhcpDhcpcanon *self = NM_DHCP_DHCPCANON (client);
-	NMDhcpDhcpcanonPrivate *priv = NM_DHCP_DHCPCANON_GET_PRIVATE (self);
-	gs_unref_ptrarray GPtrArray *argv = NULL;
-	pid_t pid;
-	gs_free_error GError *local = NULL;
-	const char *iface;
-	const char *system_bus_address;
-	const char *dhcpcanon_path;
-	gs_free char *binary_name = NULL;
-	gs_free char *pid_file = NULL;
-	gs_free char *system_bus_address_env = NULL;
-	int addr_family;
-
-	g_return_val_if_fail (!priv->pid_file, FALSE);
-
-	iface = nm_dhcp_client_get_iface (client);
-
-	addr_family = nm_dhcp_client_get_addr_family (client);
-
-	dhcpcanon_path = nm_dhcp_dhcpcanon_get_path ();
-	if (!dhcpcanon_path) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "dhcpcanon binary not found");
-		return FALSE;
-	}
-
-	_LOGD ("dhcpcanon_path: %s", dhcpcanon_path);
-
-	pid_file = g_strdup_printf (RUNSTATEDIR "/dhcpcanon%c-%s.pid",
-	                            nm_utils_addr_family_to_char (addr_family),
-	                            iface);
-	_LOGD ("pid_file: %s", pid_file);
-
-	/* Kill any existing dhcpcanon from the pidfile */
-	binary_name = g_path_get_basename (dhcpcanon_path);
-	nm_dhcp_client_stop_existing (pid_file, binary_name);
-
-	argv = g_ptr_array_new ();
-	g_ptr_array_add (argv, (gpointer) dhcpcanon_path);
-
-	g_ptr_array_add (argv, (gpointer) "-sf"); /* Set script file */
-	g_ptr_array_add (argv, (gpointer) nm_dhcp_helper_path);
-
-	g_ptr_array_add (argv, (gpointer) "-pf"); /* Set pid file */
-	g_ptr_array_add (argv, (gpointer) pid_file);
-
-	if (priv->conf_file) {
-		g_ptr_array_add (argv, (gpointer) "-cf"); /* Set interface config file */
-		g_ptr_array_add (argv, (gpointer) priv->conf_file);
-	}
-
-	/* Usually the system bus address is well-known; but if it's supposed
-	 * to be something else, we need to push it to dhcpcanon, since dhcpcanon
-	 * sanitizes the environment it gives the action scripts.
-	 */
-	system_bus_address = getenv ("DBUS_SYSTEM_BUS_ADDRESS");
-	if (system_bus_address) {
-		system_bus_address_env = g_strdup_printf ("DBUS_SYSTEM_BUS_ADDRESS=%s", system_bus_address);
-		g_ptr_array_add (argv, (gpointer) "-e");
-		g_ptr_array_add (argv, (gpointer) system_bus_address_env);
-	}
-
-	g_ptr_array_add (argv, (gpointer) iface);
-	g_ptr_array_add (argv, NULL);
-
-	if (!g_spawn_async (NULL,
-	                   (char **) argv->pdata,
-	                   NULL,
-	                     G_SPAWN_DO_NOT_REAP_CHILD
-	                   | G_SPAWN_STDOUT_TO_DEV_NULL
-	                   | G_SPAWN_STDERR_TO_DEV_NULL,
-	                   nm_utils_setpgid,
-	                   NULL,
-	                   &pid,
-	                   &local)) {
-		nm_utils_error_set (error,
-		                    NM_UTILS_ERROR_UNKNOWN,
-		                    "dhcpcanon failed to start: %s",
-		                    local->message);
-		return FALSE;
-	}
-
-	nm_assert (pid > 0);
-	_LOGI ("dhcpcanon started with pid %d", pid);
-	nm_dhcp_client_watch_child (client, pid);
-	priv->pid_file = g_steal_pointer (&pid_file);
-	return TRUE;
+    NMDhcpDhcpcanon *       self      = NM_DHCP_DHCPCANON(client);
+    NMDhcpDhcpcanonPrivate *priv      = NM_DHCP_DHCPCANON_GET_PRIVATE(self);
+    gs_unref_ptrarray GPtrArray *argv = NULL;
+    pid_t                        pid;
+    gs_free_error GError *local = NULL;
+    const char *          iface;
+    const char *          system_bus_address;
+    const char *          dhcpcanon_path;
+    gs_free char *        binary_name            = NULL;
+    gs_free char *        pid_file               = NULL;
+    gs_free char *        system_bus_address_env = NULL;
+    int                   addr_family;
+
+    g_return_val_if_fail(!priv->pid_file, FALSE);
+
+    iface = nm_dhcp_client_get_iface(client);
+
+    addr_family = nm_dhcp_client_get_addr_family(client);
+
+    dhcpcanon_path = nm_dhcp_dhcpcanon_get_path();
+    if (!dhcpcanon_path) {
+        nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "dhcpcanon binary not found");
+        return FALSE;
+    }
+
+    _LOGD("dhcpcanon_path: %s", dhcpcanon_path);
+
+    pid_file = g_strdup_printf(RUNSTATEDIR "/dhcpcanon%c-%s.pid",
+                               nm_utils_addr_family_to_char(addr_family),
+                               iface);
+    _LOGD("pid_file: %s", pid_file);
+
+    /* Kill any existing dhcpcanon from the pidfile */
+    binary_name = g_path_get_basename(dhcpcanon_path);
+    nm_dhcp_client_stop_existing(pid_file, binary_name);
+
+    argv = g_ptr_array_new();
+    g_ptr_array_add(argv, (gpointer) dhcpcanon_path);
+
+    g_ptr_array_add(argv, (gpointer) "-sf"); /* Set script file */
+    g_ptr_array_add(argv, (gpointer) nm_dhcp_helper_path);
+
+    g_ptr_array_add(argv, (gpointer) "-pf"); /* Set pid file */
+    g_ptr_array_add(argv, (gpointer) pid_file);
+
+    if (priv->conf_file) {
+        g_ptr_array_add(argv, (gpointer) "-cf"); /* Set interface config file */
+        g_ptr_array_add(argv, (gpointer) priv->conf_file);
+    }
+
+    /* Usually the system bus address is well-known; but if it's supposed
+     * to be something else, we need to push it to dhcpcanon, since dhcpcanon
+     * sanitizes the environment it gives the action scripts.
+     */
+    system_bus_address = getenv("DBUS_SYSTEM_BUS_ADDRESS");
+    if (system_bus_address) {
+        system_bus_address_env = g_strdup_printf("DBUS_SYSTEM_BUS_ADDRESS=%s", system_bus_address);
+        g_ptr_array_add(argv, (gpointer) "-e");
+        g_ptr_array_add(argv, (gpointer) system_bus_address_env);
+    }
+
+    g_ptr_array_add(argv, (gpointer) iface);
+    g_ptr_array_add(argv, NULL);
+
+    if (!g_spawn_async(NULL,
+                       (char **) argv->pdata,
+                       NULL,
+                       G_SPAWN_DO_NOT_REAP_CHILD | G_SPAWN_STDOUT_TO_DEV_NULL
+                           | G_SPAWN_STDERR_TO_DEV_NULL,
+                       nm_utils_setpgid,
+                       NULL,
+                       &pid,
+                       &local)) {
+        nm_utils_error_set(error,
+                           NM_UTILS_ERROR_UNKNOWN,
+                           "dhcpcanon failed to start: %s",
+                           local->message);
+        return FALSE;
+    }
+
+    nm_assert(pid > 0);
+    _LOGI("dhcpcanon started with pid %d", pid);
+    nm_dhcp_client_watch_child(client, pid);
+    priv->pid_file = g_steal_pointer(&pid_file);
+    return TRUE;
 }
 
 static gboolean
-ip4_start (NMDhcpClient *client,
-           const char *dhcp_anycast_addr,
-           const char *last_ip4_address,
-           GError **error)
+ip4_start(NMDhcpClient *client,
+          const char *  dhcp_anycast_addr,
+          const char *  last_ip4_address,
+          GError **     error)
 {
-	return dhcpcanon_start (client,
-	                        NULL,
-	                        NULL,
-	                        FALSE,
-	                        NULL,
-	                        0,
-	                        error);
+    return dhcpcanon_start(client, NULL, NULL, FALSE, NULL, 0, error);
 }
 
 static void
-stop (NMDhcpClient *client, gboolean release)
+stop(NMDhcpClient *client, gboolean release)
 {
-	NMDhcpDhcpcanon *self = NM_DHCP_DHCPCANON (client);
-	NMDhcpDhcpcanonPrivate *priv = NM_DHCP_DHCPCANON_GET_PRIVATE (self);
-	int errsv;
-
-	NM_DHCP_CLIENT_CLASS (nm_dhcp_dhcpcanon_parent_class)->stop (client, release);
-
-	if (priv->pid_file) {
-		if (remove (priv->pid_file) == -1) {
-			errsv = errno;
-			_LOGD ("could not remove dhcp pid file \"%s\": %d (%s)", priv->pid_file, errsv, nm_strerror_native (errsv));
-		}
-		g_free (priv->pid_file);
-		priv->pid_file = NULL;
-	}
+    NMDhcpDhcpcanon *       self = NM_DHCP_DHCPCANON(client);
+    NMDhcpDhcpcanonPrivate *priv = NM_DHCP_DHCPCANON_GET_PRIVATE(self);
+    int                     errsv;
+
+    NM_DHCP_CLIENT_CLASS(nm_dhcp_dhcpcanon_parent_class)->stop(client, release);
+
+    if (priv->pid_file) {
+        if (remove(priv->pid_file) == -1) {
+            errsv = errno;
+            _LOGD("could not remove dhcp pid file \"%s\": %d (%s)",
+                  priv->pid_file,
+                  errsv,
+                  nm_strerror_native(errsv));
+        }
+        g_free(priv->pid_file);
+        priv->pid_file = NULL;
+    }
 }
 
 /*****************************************************************************/
 
 static void
-nm_dhcp_dhcpcanon_init (NMDhcpDhcpcanon *self)
+nm_dhcp_dhcpcanon_init(NMDhcpDhcpcanon *self)
 {
-	NMDhcpDhcpcanonPrivate *priv = NM_DHCP_DHCPCANON_GET_PRIVATE (self);
+    NMDhcpDhcpcanonPrivate *priv = NM_DHCP_DHCPCANON_GET_PRIVATE(self);
 
-	priv->dhcp_listener = g_object_ref (nm_dhcp_listener_get ());
-	g_signal_connect (priv->dhcp_listener,
-	                  NM_DHCP_LISTENER_EVENT,
-	                  G_CALLBACK (nm_dhcp_client_handle_event),
-	                  self);
+    priv->dhcp_listener = g_object_ref(nm_dhcp_listener_get());
+    g_signal_connect(priv->dhcp_listener,
+                     NM_DHCP_LISTENER_EVENT,
+                     G_CALLBACK(nm_dhcp_client_handle_event),
+                     self);
 }
 
 static void
-dispose (GObject *object)
+dispose(GObject *object)
 {
-	NMDhcpDhcpcanonPrivate *priv = NM_DHCP_DHCPCANON_GET_PRIVATE (object);
+    NMDhcpDhcpcanonPrivate *priv = NM_DHCP_DHCPCANON_GET_PRIVATE(object);
 
-	if (priv->dhcp_listener) {
-		g_signal_handlers_disconnect_by_func (priv->dhcp_listener,
-		                                      G_CALLBACK (nm_dhcp_client_handle_event),
-		                                      NM_DHCP_DHCPCANON (object));
-		g_clear_object (&priv->dhcp_listener);
-	}
+    if (priv->dhcp_listener) {
+        g_signal_handlers_disconnect_by_func(priv->dhcp_listener,
+                                             G_CALLBACK(nm_dhcp_client_handle_event),
+                                             NM_DHCP_DHCPCANON(object));
+        g_clear_object(&priv->dhcp_listener);
+    }
 
-	nm_clear_g_free (&priv->pid_file);
+    nm_clear_g_free(&priv->pid_file);
 
-	G_OBJECT_CLASS (nm_dhcp_dhcpcanon_parent_class)->dispose (object);
+    G_OBJECT_CLASS(nm_dhcp_dhcpcanon_parent_class)->dispose(object);
 }
 
 static void
-nm_dhcp_dhcpcanon_class_init (NMDhcpDhcpcanonClass *dhcpcanon_class)
+nm_dhcp_dhcpcanon_class_init(NMDhcpDhcpcanonClass *dhcpcanon_class)
 {
-	NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS (dhcpcanon_class);
-	GObjectClass *object_class = G_OBJECT_CLASS (dhcpcanon_class);
+    NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS(dhcpcanon_class);
+    GObjectClass *     object_class = G_OBJECT_CLASS(dhcpcanon_class);
 
-	object_class->dispose = dispose;
+    object_class->dispose = dispose;
 
-	client_class->ip4_start = ip4_start;
-	client_class->stop = stop;
+    client_class->ip4_start = ip4_start;
+    client_class->stop      = stop;
 }
 
 const NMDhcpClientFactory _nm_dhcp_client_factory_dhcpcanon = {
-	.name     = "dhcpcanon",
-	.get_type = nm_dhcp_dhcpcanon_get_type,
-	.get_path = nm_dhcp_dhcpcanon_get_path,
+    .name     = "dhcpcanon",
+    .get_type = nm_dhcp_dhcpcanon_get_type,
+    .get_path = nm_dhcp_dhcpcanon_get_path,
 };
 
 #endif /* WITH_DHCPCANON */
diff --git a/src/dhcp/nm-dhcp-dhcpcd.c b/src/dhcp/nm-dhcp-dhcpcd.c
index ff695dbe..b2b5d28b 100644
--- a/src/dhcp/nm-dhcp-dhcpcd.c
+++ b/src/dhcp/nm-dhcp-dhcpcd.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2008 Roy Marples
  * Copyright (C) 2010 Dan Williams <dcbw@redhat.com>
@@ -8,228 +8,233 @@
 
 #if WITH_DHCPCD
 
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
+    #include <stdlib.h>
+    #include <unistd.h>
+    #include <stdio.h>
+    #include <netinet/in.h>
+    #include <arpa/inet.h>
 
-#include "nm-dhcp-manager.h"
-#include "nm-utils.h"
-#include "NetworkManagerUtils.h"
-#include "nm-dhcp-listener.h"
-#include "nm-dhcp-client-logging.h"
+    #include "nm-dhcp-manager.h"
+    #include "nm-utils.h"
+    #include "NetworkManagerUtils.h"
+    #include "nm-dhcp-listener.h"
+    #include "nm-dhcp-client-logging.h"
 
 /*****************************************************************************/
 
-#define NM_TYPE_DHCP_DHCPCD            (nm_dhcp_dhcpcd_get_type ())
-#define NM_DHCP_DHCPCD(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_DHCP_DHCPCD, NMDhcpDhcpcd))
-#define NM_DHCP_DHCPCD_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_DHCP_DHCPCD, NMDhcpDhcpcdClass))
-#define NM_IS_DHCP_DHCPCD(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_DHCP_DHCPCD))
-#define NM_IS_DHCP_DHCPCD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_DHCP_DHCPCD))
-#define NM_DHCP_DHCPCD_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_DHCP_DHCPCD, NMDhcpDhcpcdClass))
-
-typedef struct _NMDhcpDhcpcd NMDhcpDhcpcd;
+    #define NM_TYPE_DHCP_DHCPCD (nm_dhcp_dhcpcd_get_type())
+    #define NM_DHCP_DHCPCD(obj) \
+        (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_DHCP_DHCPCD, NMDhcpDhcpcd))
+    #define NM_DHCP_DHCPCD_CLASS(klass) \
+        (G_TYPE_CHECK_CLASS_CAST((klass), NM_TYPE_DHCP_DHCPCD, NMDhcpDhcpcdClass))
+    #define NM_IS_DHCP_DHCPCD(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_DHCP_DHCPCD))
+    #define NM_IS_DHCP_DHCPCD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), NM_TYPE_DHCP_DHCPCD))
+    #define NM_DHCP_DHCPCD_GET_CLASS(obj) \
+        (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_DHCP_DHCPCD, NMDhcpDhcpcdClass))
+
+typedef struct _NMDhcpDhcpcd      NMDhcpDhcpcd;
 typedef struct _NMDhcpDhcpcdClass NMDhcpDhcpcdClass;
 
-static GType nm_dhcp_dhcpcd_get_type (void);
+static GType nm_dhcp_dhcpcd_get_type(void);
 
 /*****************************************************************************/
 
 typedef struct {
-	char *pid_file;
-	NMDhcpListener *dhcp_listener;
+    char *          pid_file;
+    NMDhcpListener *dhcp_listener;
 } NMDhcpDhcpcdPrivate;
 
 struct _NMDhcpDhcpcd {
-	NMDhcpClient parent;
-	NMDhcpDhcpcdPrivate _priv;
+    NMDhcpClient        parent;
+    NMDhcpDhcpcdPrivate _priv;
 };
 
 struct _NMDhcpDhcpcdClass {
-	NMDhcpClientClass parent;
+    NMDhcpClientClass parent;
 };
 
-G_DEFINE_TYPE (NMDhcpDhcpcd, nm_dhcp_dhcpcd, NM_TYPE_DHCP_CLIENT)
+G_DEFINE_TYPE(NMDhcpDhcpcd, nm_dhcp_dhcpcd, NM_TYPE_DHCP_CLIENT)
 
-#define NM_DHCP_DHCPCD_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDhcpDhcpcd, NM_IS_DHCP_DHCPCD)
+    #define NM_DHCP_DHCPCD_GET_PRIVATE(self) _NM_GET_PRIVATE(self, NMDhcpDhcpcd, NM_IS_DHCP_DHCPCD)
 
 /*****************************************************************************/
 
 static const char *
-nm_dhcp_dhcpcd_get_path (void)
+nm_dhcp_dhcpcd_get_path(void)
 {
-	return nm_utils_find_helper ("dhcpcd", DHCPCD_PATH, NULL);
+    return nm_utils_find_helper("dhcpcd", DHCPCD_PATH, NULL);
 }
 
 static gboolean
-ip4_start (NMDhcpClient *client,
-           const char *dhcp_anycast_addr,
-           const char *last_ip4_address,
-           GError **error)
+ip4_start(NMDhcpClient *client,
+          const char *  dhcp_anycast_addr,
+          const char *  last_ip4_address,
+          GError **     error)
 {
-	NMDhcpDhcpcd *self = NM_DHCP_DHCPCD (client);
-	NMDhcpDhcpcdPrivate *priv = NM_DHCP_DHCPCD_GET_PRIVATE (self);
-	gs_unref_ptrarray GPtrArray *argv = NULL;
-	pid_t pid = -1;
-	GError *local = NULL;
-	gs_free char *cmd_str = NULL;
-	gs_free char *binary_name = NULL;
-	const char *iface;
-	const char *dhcpcd_path;
-	const char *hostname;
-
-	g_return_val_if_fail (priv->pid_file == NULL, FALSE);
-
-	iface = nm_dhcp_client_get_iface (client);
-
-	/* dhcpcd does not allow custom pidfiles; the pidfile is always
-	 * RUNSTATEDIR "dhcpcd-<ifname>.pid".
-	 */
-	priv->pid_file = g_strdup_printf (RUNSTATEDIR "/dhcpcd-%s.pid", iface);
-
-	dhcpcd_path = nm_dhcp_dhcpcd_get_path ();
-	if (!dhcpcd_path) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "dhcpcd binary not found");
-		return FALSE;
-	}
-
-	/* Kill any existing dhcpcd from the pidfile */
-	binary_name = g_path_get_basename (dhcpcd_path);
-	nm_dhcp_client_stop_existing (priv->pid_file, binary_name);
-
-	argv = g_ptr_array_new ();
-	g_ptr_array_add (argv, (gpointer) dhcpcd_path);
-
-	g_ptr_array_add (argv, (gpointer) "-B");    /* Don't background on lease (disable fork()) */
-
-	g_ptr_array_add (argv, (gpointer) "-K");    /* Disable built-in carrier detection */
-
-	g_ptr_array_add (argv, (gpointer) "-L");    /* Disable built-in IPv4LL */
-
-	/* --noarp. Don't request or claim the address by ARP; this also disables IPv4LL. */
-	g_ptr_array_add (argv, (gpointer) "-A");
-
-	g_ptr_array_add (argv, (gpointer) "-G");    /* Let NM handle routing */
-
-	g_ptr_array_add (argv, (gpointer) "-c");    /* Set script file */
-	g_ptr_array_add (argv, (gpointer) nm_dhcp_helper_path);
-
-	/* IPv4-only for now.  NetworkManager knows better than dhcpcd when to
-	 * run IPv6, and dhcpcd's automatic Router Solicitations cause problems
-	 * with devices that don't expect them.
-	 */
-	g_ptr_array_add (argv, (gpointer) "-4");
-
-	hostname = nm_dhcp_client_get_hostname (client);
-
-	if (hostname) {
-		if (nm_dhcp_client_get_use_fqdn (client)) {
-			g_ptr_array_add (argv, (gpointer) "-h");
-			g_ptr_array_add (argv, (gpointer) hostname);
-			g_ptr_array_add (argv, (gpointer) "-F");
-			g_ptr_array_add (argv, (gpointer) "both");
-		} else {
-			g_ptr_array_add (argv, (gpointer) "-h");
-			g_ptr_array_add (argv, (gpointer) hostname);
-		}
-	}
-
-	g_ptr_array_add (argv, (gpointer) iface);
-	g_ptr_array_add (argv, NULL);
-
-	_LOGD ("running: %s",
-	       (cmd_str = g_strjoinv (" ", (char **) argv->pdata)));
-
-	if (!g_spawn_async (NULL,
-	                    (char **) argv->pdata, NULL,
-	                      G_SPAWN_DO_NOT_REAP_CHILD
-	                    | G_SPAWN_STDOUT_TO_DEV_NULL
-	                    | G_SPAWN_STDERR_TO_DEV_NULL,
-	                    nm_utils_setpgid,
-	                    NULL,
-	                    &pid,
-	                    &local)) {
-		nm_utils_error_set (error,
-		                    NM_UTILS_ERROR_UNKNOWN,
-		                    "dhcpcd failed to start: %s",
-		                    local->message);
-		g_error_free (local);
-		return FALSE;
-	}
-
-	nm_assert (pid > 0);
-	_LOGI ("dhcpcd started with pid %d", pid);
-	nm_dhcp_client_watch_child (client, pid);
-	return TRUE;
+    NMDhcpDhcpcd *       self                = NM_DHCP_DHCPCD(client);
+    NMDhcpDhcpcdPrivate *priv                = NM_DHCP_DHCPCD_GET_PRIVATE(self);
+    gs_unref_ptrarray GPtrArray *argv        = NULL;
+    pid_t                        pid         = -1;
+    GError *                     local       = NULL;
+    gs_free char *               cmd_str     = NULL;
+    gs_free char *               binary_name = NULL;
+    const char *                 iface;
+    const char *                 dhcpcd_path;
+    const char *                 hostname;
+
+    g_return_val_if_fail(priv->pid_file == NULL, FALSE);
+
+    iface = nm_dhcp_client_get_iface(client);
+
+    /* dhcpcd does not allow custom pidfiles; the pidfile is always
+     * RUNSTATEDIR "dhcpcd-<ifname>.pid".
+     */
+    priv->pid_file = g_strdup_printf(RUNSTATEDIR "/dhcpcd-%s.pid", iface);
+
+    dhcpcd_path = nm_dhcp_dhcpcd_get_path();
+    if (!dhcpcd_path) {
+        nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "dhcpcd binary not found");
+        return FALSE;
+    }
+
+    /* Kill any existing dhcpcd from the pidfile */
+    binary_name = g_path_get_basename(dhcpcd_path);
+    nm_dhcp_client_stop_existing(priv->pid_file, binary_name);
+
+    argv = g_ptr_array_new();
+    g_ptr_array_add(argv, (gpointer) dhcpcd_path);
+
+    g_ptr_array_add(argv, (gpointer) "-B"); /* Don't background on lease (disable fork()) */
+
+    g_ptr_array_add(argv, (gpointer) "-K"); /* Disable built-in carrier detection */
+
+    g_ptr_array_add(argv, (gpointer) "-L"); /* Disable built-in IPv4LL */
+
+    /* --noarp. Don't request or claim the address by ARP; this also disables IPv4LL. */
+    g_ptr_array_add(argv, (gpointer) "-A");
+
+    g_ptr_array_add(argv, (gpointer) "-G"); /* Let NM handle routing */
+
+    g_ptr_array_add(argv, (gpointer) "-c"); /* Set script file */
+    g_ptr_array_add(argv, (gpointer) nm_dhcp_helper_path);
+
+    /* IPv4-only for now.  NetworkManager knows better than dhcpcd when to
+     * run IPv6, and dhcpcd's automatic Router Solicitations cause problems
+     * with devices that don't expect them.
+     */
+    g_ptr_array_add(argv, (gpointer) "-4");
+
+    hostname = nm_dhcp_client_get_hostname(client);
+
+    if (hostname) {
+        if (nm_dhcp_client_get_use_fqdn(client)) {
+            g_ptr_array_add(argv, (gpointer) "-h");
+            g_ptr_array_add(argv, (gpointer) hostname);
+            g_ptr_array_add(argv, (gpointer) "-F");
+            g_ptr_array_add(argv, (gpointer) "both");
+        } else {
+            g_ptr_array_add(argv, (gpointer) "-h");
+            g_ptr_array_add(argv, (gpointer) hostname);
+        }
+    }
+
+    g_ptr_array_add(argv, (gpointer) iface);
+    g_ptr_array_add(argv, NULL);
+
+    _LOGD("running: %s", (cmd_str = g_strjoinv(" ", (char **) argv->pdata)));
+
+    if (!g_spawn_async(NULL,
+                       (char **) argv->pdata,
+                       NULL,
+                       G_SPAWN_DO_NOT_REAP_CHILD | G_SPAWN_STDOUT_TO_DEV_NULL
+                           | G_SPAWN_STDERR_TO_DEV_NULL,
+                       nm_utils_setpgid,
+                       NULL,
+                       &pid,
+                       &local)) {
+        nm_utils_error_set(error,
+                           NM_UTILS_ERROR_UNKNOWN,
+                           "dhcpcd failed to start: %s",
+                           local->message);
+        g_error_free(local);
+        return FALSE;
+    }
+
+    nm_assert(pid > 0);
+    _LOGI("dhcpcd started with pid %d", pid);
+    nm_dhcp_client_watch_child(client, pid);
+    return TRUE;
 }
 
 static void
-stop (NMDhcpClient *client, gboolean release)
+stop(NMDhcpClient *client, gboolean release)
 {
-	NMDhcpDhcpcd *self = NM_DHCP_DHCPCD (client);
-	NMDhcpDhcpcdPrivate *priv = NM_DHCP_DHCPCD_GET_PRIVATE (self);
-	int errsv;
-
-	NM_DHCP_CLIENT_CLASS (nm_dhcp_dhcpcd_parent_class)->stop (client, release);
-
-	if (priv->pid_file) {
-		if (remove (priv->pid_file) == -1) {
-			errsv = errno;
-			_LOGD ("could not remove dhcp pid file \"%s\": %d (%s)", priv->pid_file, errsv, nm_strerror_native (errsv));
-		}
-	}
-
-	/* FIXME: implement release... */
+    NMDhcpDhcpcd *       self = NM_DHCP_DHCPCD(client);
+    NMDhcpDhcpcdPrivate *priv = NM_DHCP_DHCPCD_GET_PRIVATE(self);
+    int                  errsv;
+
+    NM_DHCP_CLIENT_CLASS(nm_dhcp_dhcpcd_parent_class)->stop(client, release);
+
+    if (priv->pid_file) {
+        if (remove(priv->pid_file) == -1) {
+            errsv = errno;
+            _LOGD("could not remove dhcp pid file \"%s\": %d (%s)",
+                  priv->pid_file,
+                  errsv,
+                  nm_strerror_native(errsv));
+        }
+    }
+
+    /* FIXME: implement release... */
 }
 
 /*****************************************************************************/
 
 static void
-nm_dhcp_dhcpcd_init (NMDhcpDhcpcd *self)
+nm_dhcp_dhcpcd_init(NMDhcpDhcpcd *self)
 {
-	NMDhcpDhcpcdPrivate *priv = NM_DHCP_DHCPCD_GET_PRIVATE (self);
+    NMDhcpDhcpcdPrivate *priv = NM_DHCP_DHCPCD_GET_PRIVATE(self);
 
-	priv->dhcp_listener = g_object_ref (nm_dhcp_listener_get ());
-	g_signal_connect (priv->dhcp_listener,
-	                  NM_DHCP_LISTENER_EVENT,
-	                  G_CALLBACK (nm_dhcp_client_handle_event),
-	                  self);
+    priv->dhcp_listener = g_object_ref(nm_dhcp_listener_get());
+    g_signal_connect(priv->dhcp_listener,
+                     NM_DHCP_LISTENER_EVENT,
+                     G_CALLBACK(nm_dhcp_client_handle_event),
+                     self);
 }
 
 static void
-dispose (GObject *object)
+dispose(GObject *object)
 {
-	NMDhcpDhcpcdPrivate *priv = NM_DHCP_DHCPCD_GET_PRIVATE (object);
+    NMDhcpDhcpcdPrivate *priv = NM_DHCP_DHCPCD_GET_PRIVATE(object);
 
-	if (priv->dhcp_listener) {
-		g_signal_handlers_disconnect_by_func (priv->dhcp_listener,
-		                                      G_CALLBACK (nm_dhcp_client_handle_event),
-		                                      NM_DHCP_DHCPCD (object));
-		g_clear_object (&priv->dhcp_listener);
-	}
+    if (priv->dhcp_listener) {
+        g_signal_handlers_disconnect_by_func(priv->dhcp_listener,
+                                             G_CALLBACK(nm_dhcp_client_handle_event),
+                                             NM_DHCP_DHCPCD(object));
+        g_clear_object(&priv->dhcp_listener);
+    }
 
-	nm_clear_g_free (&priv->pid_file);
+    nm_clear_g_free(&priv->pid_file);
 
-	G_OBJECT_CLASS (nm_dhcp_dhcpcd_parent_class)->dispose (object);
+    G_OBJECT_CLASS(nm_dhcp_dhcpcd_parent_class)->dispose(object);
 }
 
 static void
-nm_dhcp_dhcpcd_class_init (NMDhcpDhcpcdClass *dhcpcd_class)
+nm_dhcp_dhcpcd_class_init(NMDhcpDhcpcdClass *dhcpcd_class)
 {
-	NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS (dhcpcd_class);
-	GObjectClass *object_class = G_OBJECT_CLASS (dhcpcd_class);
+    NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS(dhcpcd_class);
+    GObjectClass *     object_class = G_OBJECT_CLASS(dhcpcd_class);
 
-	object_class->dispose = dispose;
+    object_class->dispose = dispose;
 
-	client_class->ip4_start = ip4_start;
-	client_class->stop = stop;
+    client_class->ip4_start = ip4_start;
+    client_class->stop      = stop;
 }
 
 const NMDhcpClientFactory _nm_dhcp_client_factory_dhcpcd = {
-	.name     = "dhcpcd",
-	.get_type = nm_dhcp_dhcpcd_get_type,
-	.get_path = nm_dhcp_dhcpcd_get_path,
+    .name     = "dhcpcd",
+    .get_type = nm_dhcp_dhcpcd_get_type,
+    .get_path = nm_dhcp_dhcpcd_get_path,
 };
 
 #endif /* WITH_DHCPCD */
diff --git a/src/dhcp/nm-dhcp-helper-api.h b/src/dhcp/nm-dhcp-helper-api.h
index a03049aa..aa1d203a 100644
--- a/src/dhcp/nm-dhcp-helper-api.h
+++ b/src/dhcp/nm-dhcp-helper-api.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-2.1+
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /*
  * Copyright (C) 2016 Red Hat, Inc.
  */
@@ -10,10 +10,10 @@
 
 #define NM_DHCP_CLIENT_DBUS_IFACE "org.freedesktop.nm_dhcp_client"
 
-#define NM_DHCP_HELPER_SERVER_BUS_NAME          "org.freedesktop.nm_dhcp_server"
-#define NM_DHCP_HELPER_SERVER_OBJECT_PATH       "/org/freedesktop/nm_dhcp_server"
-#define NM_DHCP_HELPER_SERVER_INTERFACE_NAME    "org.freedesktop.nm_dhcp_server"
-#define NM_DHCP_HELPER_SERVER_METHOD_NOTIFY     "Notify"
+#define NM_DHCP_HELPER_SERVER_BUS_NAME       "org.freedesktop.nm_dhcp_server"
+#define NM_DHCP_HELPER_SERVER_OBJECT_PATH    "/org/freedesktop/nm_dhcp_server"
+#define NM_DHCP_HELPER_SERVER_INTERFACE_NAME "org.freedesktop.nm_dhcp_server"
+#define NM_DHCP_HELPER_SERVER_METHOD_NOTIFY  "Notify"
 
 /*****************************************************************************/
 
diff --git a/src/dhcp/nm-dhcp-helper.c b/src/dhcp/nm-dhcp-helper.c
index 071d331b..84fa859d 100644
--- a/src/dhcp/nm-dhcp-helper.c
+++ b/src/dhcp/nm-dhcp-helper.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2007 - 2013 Red Hat, Inc.
  */
@@ -16,234 +16,227 @@
 /*****************************************************************************/
 
 #if NM_MORE_LOGGING
-#define _NMLOG_ENABLED(level) TRUE
+    #define _NMLOG_ENABLED(level) TRUE
 #else
-#define _NMLOG_ENABLED(level) ((level) <= LOG_ERR)
+    #define _NMLOG_ENABLED(level) ((level) <= LOG_ERR)
 #endif
 
-#define _NMLOG(always_enabled, level, ...) \
-	G_STMT_START { \
-		if ((always_enabled) || _NMLOG_ENABLED (level)) { \
-			GTimeVal _tv; \
-			\
-			g_get_current_time (&_tv); \
-			g_print ("nm-dhcp-helper[%ld] %-7s [%ld.%04ld] " _NM_UTILS_MACRO_FIRST (__VA_ARGS__) "\n", \
-			         (long) getpid (), \
-			         nm_utils_syslog_to_str (level), \
-			         _tv.tv_sec, _tv.tv_usec / 100 \
-			         _NM_UTILS_MACRO_REST (__VA_ARGS__)); \
-		} \
-	} G_STMT_END
-
-#define _LOGD(...) _NMLOG(TRUE,  LOG_INFO,    __VA_ARGS__)
-#define _LOGI(...) _NMLOG(TRUE,  LOG_NOTICE,  __VA_ARGS__)
-#define _LOGW(...) _NMLOG(TRUE,  LOG_WARNING, __VA_ARGS__)
-#define _LOGE(...) _NMLOG(TRUE,  LOG_ERR,     __VA_ARGS__)
-
-#define _LOGd(...) _NMLOG(FALSE, LOG_INFO,    __VA_ARGS__)
-#define _LOGi(...) _NMLOG(FALSE, LOG_NOTICE,  __VA_ARGS__)
+#define _NMLOG(always_enabled, level, ...)                                                       \
+    G_STMT_START                                                                                 \
+    {                                                                                            \
+        if ((always_enabled) || _NMLOG_ENABLED(level)) {                                         \
+            GTimeVal _tv;                                                                        \
+                                                                                                 \
+            g_get_current_time(&_tv);                                                            \
+            g_print(                                                                             \
+                "nm-dhcp-helper[%ld] %-7s [%ld.%04ld] " _NM_UTILS_MACRO_FIRST(__VA_ARGS__) "\n", \
+                (long) getpid(),                                                                 \
+                nm_utils_syslog_to_str(level),                                                   \
+                _tv.tv_sec,                                                                      \
+                _tv.tv_usec / 100 _NM_UTILS_MACRO_REST(__VA_ARGS__));                            \
+        }                                                                                        \
+    }                                                                                            \
+    G_STMT_END
+
+#define _LOGD(...) _NMLOG(TRUE, LOG_INFO, __VA_ARGS__)
+#define _LOGI(...) _NMLOG(TRUE, LOG_NOTICE, __VA_ARGS__)
+#define _LOGW(...) _NMLOG(TRUE, LOG_WARNING, __VA_ARGS__)
+#define _LOGE(...) _NMLOG(TRUE, LOG_ERR, __VA_ARGS__)
+
+#define _LOGd(...) _NMLOG(FALSE, LOG_INFO, __VA_ARGS__)
+#define _LOGi(...) _NMLOG(FALSE, LOG_NOTICE, __VA_ARGS__)
 #define _LOGw(...) _NMLOG(FALSE, LOG_WARNING, __VA_ARGS__)
 
 /*****************************************************************************/
 
 static GVariant *
-build_signal_parameters (void)
+build_signal_parameters(void)
 {
-	const char *const*environ_iter;
-	GVariantBuilder builder;
-
-	g_variant_builder_init (&builder, G_VARIANT_TYPE_VARDICT);
-
-	/* List environment and format for dbus dict */
-	for (environ_iter = (const char *const*) environ; *environ_iter; environ_iter++) {
-		static const char *const ignore_with_prefix_list[] = {
-			"PATH",
-			"SHLVL",
-			"_",
-			"PWD",
-			"dhc_dbus",
-			NULL
-		};
-		const char *item = *environ_iter;
-		gs_free char *name = NULL;
-		const char *val;
-		const char *const*p;
-
-		val = strchr (item, '=');
-		if (   !val
-		    || item == val)
-			continue;
-
-		name = g_strndup (item, val - item);
-		val += 1;
-
-		/* Ignore non-DHCP-related environment variables */
-		for (p = ignore_with_prefix_list; *p; p++) {
-			if (strncmp (name, *p, strlen (*p)) == 0)
-				goto next;
-		}
-
-		if (!g_utf8_validate (name, -1, NULL))
-			continue;
-
-		/* Value passed as a byte array rather than a string, because there are
-		 * no character encoding guarantees with DHCP, and D-Bus requires
-		 * strings to be UTF-8.
-		 *
-		 * Note that we can't use g_variant_new_bytestring() here, because that
-		 * includes the trailing '\0'. (??!?)
-		 */
-		g_variant_builder_add (&builder, "{sv}",
-		                       name,
-		                       g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
-		                                                  val, strlen (val), 1));
-
-next:
-		;
-	}
-
-	return g_variant_ref_sink (g_variant_new ("(a{sv})", &builder));
+    const char *const *environ_iter;
+    GVariantBuilder    builder;
+
+    g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
+
+    /* List environment and format for dbus dict */
+    for (environ_iter = (const char *const *) environ; *environ_iter; environ_iter++) {
+        static const char *const ignore_with_prefix_list[] =
+            {"PATH", "SHLVL", "_", "PWD", "dhc_dbus", NULL};
+        const char *       item = *environ_iter;
+        gs_free char *     name = NULL;
+        const char *       val;
+        const char *const *p;
+
+        val = strchr(item, '=');
+        if (!val || item == val)
+            continue;
+
+        name = g_strndup(item, val - item);
+        val += 1;
+
+        /* Ignore non-DHCP-related environment variables */
+        for (p = ignore_with_prefix_list; *p; p++) {
+            if (strncmp(name, *p, strlen(*p)) == 0)
+                goto next;
+        }
+
+        if (!g_utf8_validate(name, -1, NULL))
+            continue;
+
+        /* Value passed as a byte array rather than a string, because there are
+         * no character encoding guarantees with DHCP, and D-Bus requires
+         * strings to be UTF-8.
+         *
+         * Note that we can't use g_variant_new_bytestring() here, because that
+         * includes the trailing '\0'. (??!?)
+         */
+        g_variant_builder_add(&builder,
+                              "{sv}",
+                              name,
+                              g_variant_new_fixed_array(G_VARIANT_TYPE_BYTE, val, strlen(val), 1));
+
+next:;
+    }
+
+    return g_variant_ref_sink(g_variant_new("(a{sv})", &builder));
 }
 
 static void
-kill_pid (void)
+kill_pid(void)
 {
-	const char *pid_str;
-	pid_t pid = 0;
-
-	pid_str = getenv ("pid");
-	if (pid_str)
-		pid = strtol (pid_str, NULL, 10);
-	if (pid) {
-		_LOGI ("a fatal error occurred, kill dhclient instance with pid %d", pid);
-		kill (pid, SIGTERM);
-	}
+    const char *pid_str;
+    pid_t       pid = 0;
+
+    pid_str = getenv("pid");
+    if (pid_str)
+        pid = strtol(pid_str, NULL, 10);
+    if (pid) {
+        _LOGI("a fatal error occurred, kill dhclient instance with pid %d", pid);
+        kill(pid, SIGTERM);
+    }
 }
 
 int
-main (int argc, char *argv[])
+main(int argc, char *argv[])
 {
-	gs_unref_object GDBusConnection *connection = NULL;
-	gs_free_error GError *error = NULL;
-	gs_unref_variant GVariant *parameters = NULL;
-	gs_unref_variant GVariant *result = NULL;
-	gboolean success = FALSE;
-	guint try_count;
-	gint64 time_start;
-	gint64 time_end;
-
-	/* Connecting to the unix socket can fail with EAGAIN if there are too
-	 * many pending connections and the server can't accept them in time
-	 * before reaching backlog capacity. Ideally the server should increase
-	 * the backlog length, but GLib doesn't provide a way to change it for a
-	 * GDBus server. Retry for up to 5 seconds in case of failure. */
-	time_start = g_get_monotonic_time ();
-	time_end = time_start + (5000 * 1000L);
-	try_count = 0;
+    gs_unref_object GDBusConnection *connection = NULL;
+    gs_free_error GError *error                 = NULL;
+    gs_unref_variant GVariant *parameters       = NULL;
+    gs_unref_variant GVariant *result           = NULL;
+    gboolean                   success          = FALSE;
+    guint                      try_count;
+    gint64                     time_start;
+    gint64                     time_end;
+
+    /* Connecting to the unix socket can fail with EAGAIN if there are too
+     * many pending connections and the server can't accept them in time
+     * before reaching backlog capacity. Ideally the server should increase
+     * the backlog length, but GLib doesn't provide a way to change it for a
+     * GDBus server. Retry for up to 5 seconds in case of failure. */
+    time_start = g_get_monotonic_time();
+    time_end   = time_start + (5000 * 1000L);
+    try_count  = 0;
 
 do_connect:
-	try_count++;
-	connection = g_dbus_connection_new_for_address_sync ("unix:path=" NMRUNDIR "/private-dhcp",
-	                                                     G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT,
-	                                                     NULL, NULL, &error);
-	if (!connection) {
-		if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
-			gint64 time_remaining = time_end - g_get_monotonic_time ();
-			gint64 interval;
-
-			if (time_remaining > 0) {
-				_LOGi ("failure to connect: %s (retry %u, waited %lld ms)",
-				       error->message, try_count,
-				       (long long) (time_end - time_remaining - time_start) / 1000);
-				interval = NM_CLAMP ((gint64) (100L * (1L << NM_MIN (try_count, 31))),
-				                     5000,
-				                     100000);
-				g_usleep (NM_MIN (interval, time_remaining));
-				g_clear_error (&error);
-				goto do_connect;
-			}
-		}
-
-		g_dbus_error_strip_remote_error (error);
-		_LOGE ("could not connect to NetworkManager D-Bus socket: %s",
-		       error->message);
-		goto out;
-	}
-
-	parameters = build_signal_parameters ();
-	time_end = g_get_monotonic_time () + (200 * 1000L); /* retry for at most 200 milliseconds */
-	try_count = 0;
+    try_count++;
+    connection =
+        g_dbus_connection_new_for_address_sync("unix:path=" NMRUNDIR "/private-dhcp",
+                                               G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT,
+                                               NULL,
+                                               NULL,
+                                               &error);
+    if (!connection) {
+        if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
+            gint64 time_remaining = time_end - g_get_monotonic_time();
+            gint64 interval;
+
+            if (time_remaining > 0) {
+                _LOGi("failure to connect: %s (retry %u, waited %lld ms)",
+                      error->message,
+                      try_count,
+                      (long long) (time_end - time_remaining - time_start) / 1000);
+                interval = NM_CLAMP((gint64)(100L * (1L << NM_MIN(try_count, 31))), 5000, 100000);
+                g_usleep(NM_MIN(interval, time_remaining));
+                g_clear_error(&error);
+                goto do_connect;
+            }
+        }
+
+        g_dbus_error_strip_remote_error(error);
+        _LOGE("could not connect to NetworkManager D-Bus socket: %s", error->message);
+        goto out;
+    }
+
+    parameters = build_signal_parameters();
+    time_end   = g_get_monotonic_time() + (200 * 1000L); /* retry for at most 200 milliseconds */
+    try_count  = 0;
 
 do_notify:
-	try_count++;
-	result = g_dbus_connection_call_sync (connection,
-	                                      NULL,
-	                                      NM_DHCP_HELPER_SERVER_OBJECT_PATH,
-	                                      NM_DHCP_HELPER_SERVER_INTERFACE_NAME,
-	                                      NM_DHCP_HELPER_SERVER_METHOD_NOTIFY,
-	                                      parameters,
-	                                      NULL,
-	                                      G_DBUS_CALL_FLAGS_NONE,
-	                                      1000,
-	                                      NULL,
-	                                      &error);
-
-	if (!result) {
-		gs_free char *s_err = NULL;
-
-		s_err = g_dbus_error_get_remote_error (error);
-		if (NM_IN_STRSET (s_err, "org.freedesktop.DBus.Error.UnknownMethod")) {
-			gint64 remaining_time = time_end - g_get_monotonic_time ();
-			gint64 interval;
-
-			/* I am not sure that a race can actually happen, as we register the object
-			 * on the server side during GDBusServer:new-connection signal.
-			 *
-			 * However, there was also a race for subscribing to an event, so let's just
-			 * do some retry. */
-			if (remaining_time > 0) {
-				_LOGi ("failure to call notify: %s (retry %u)", error->message, try_count);
-				interval = NM_CLAMP ((gint64) (100L * (1L << NM_MIN (try_count, 31))),
-				                     5000,
-				                     25000);
-				g_usleep (NM_MIN (interval, remaining_time));
-				g_clear_error (&error);
-				goto do_notify;
-			}
-		}
-		_LOGW ("failure to call notify: %s (try signal via Event)", error->message);
-		g_clear_error (&error);
-
-		/* for backward compatibility, try to emit the signal. There is no stable
-		 * API between the dhcp-helper and NetworkManager. However, while upgrading
-		 * the NetworkManager package, a newer helper might want to notify an
-		 * older server, which still uses the "Event". */
-		if (!g_dbus_connection_emit_signal (connection,
-		                                    NULL,
-		                                    "/",
-		                                    NM_DHCP_CLIENT_DBUS_IFACE,
-		                                    "Event",
-		                                    parameters,
-		                                    &error)) {
-			g_dbus_error_strip_remote_error (error);
-			_LOGE ("could not send DHCP Event signal: %s", error->message);
-			goto out;
-		}
-		/* We were able to send the asynchronous Event. Consider that a success. */
-		success = TRUE;
-	} else
-		success = TRUE;
-
-	if (!g_dbus_connection_flush_sync (connection, NULL, &error)) {
-		g_dbus_error_strip_remote_error (error);
-		_LOGE ("could not flush D-Bus connection: %s", error->message);
-		success = FALSE;
-		goto out;
-	}
+    try_count++;
+    result = g_dbus_connection_call_sync(connection,
+                                         NULL,
+                                         NM_DHCP_HELPER_SERVER_OBJECT_PATH,
+                                         NM_DHCP_HELPER_SERVER_INTERFACE_NAME,
+                                         NM_DHCP_HELPER_SERVER_METHOD_NOTIFY,
+                                         parameters,
+                                         NULL,
+                                         G_DBUS_CALL_FLAGS_NONE,
+                                         1000,
+                                         NULL,
+                                         &error);
+
+    if (!result) {
+        gs_free char *s_err = NULL;
+
+        s_err = g_dbus_error_get_remote_error(error);
+        if (NM_IN_STRSET(s_err, "org.freedesktop.DBus.Error.UnknownMethod")) {
+            gint64 remaining_time = time_end - g_get_monotonic_time();
+            gint64 interval;
+
+            /* I am not sure that a race can actually happen, as we register the object
+             * on the server side during GDBusServer:new-connection signal.
+             *
+             * However, there was also a race for subscribing to an event, so let's just
+             * do some retry. */
+            if (remaining_time > 0) {
+                _LOGi("failure to call notify: %s (retry %u)", error->message, try_count);
+                interval = NM_CLAMP((gint64)(100L * (1L << NM_MIN(try_count, 31))), 5000, 25000);
+                g_usleep(NM_MIN(interval, remaining_time));
+                g_clear_error(&error);
+                goto do_notify;
+            }
+        }
+        _LOGW("failure to call notify: %s (try signal via Event)", error->message);
+        g_clear_error(&error);
+
+        /* for backward compatibility, try to emit the signal. There is no stable
+         * API between the dhcp-helper and NetworkManager. However, while upgrading
+         * the NetworkManager package, a newer helper might want to notify an
+         * older server, which still uses the "Event". */
+        if (!g_dbus_connection_emit_signal(connection,
+                                           NULL,
+                                           "/",
+                                           NM_DHCP_CLIENT_DBUS_IFACE,
+                                           "Event",
+                                           parameters,
+                                           &error)) {
+            g_dbus_error_strip_remote_error(error);
+            _LOGE("could not send DHCP Event signal: %s", error->message);
+            goto out;
+        }
+        /* We were able to send the asynchronous Event. Consider that a success. */
+        success = TRUE;
+    } else
+        success = TRUE;
+
+    if (!g_dbus_connection_flush_sync(connection, NULL, &error)) {
+        g_dbus_error_strip_remote_error(error);
+        _LOGE("could not flush D-Bus connection: %s", error->message);
+        success = FALSE;
+        goto out;
+    }
 
 out:
-	if (!success)
-		kill_pid ();
-	return success ? EXIT_SUCCESS : EXIT_FAILURE;
+    if (!success)
+        kill_pid();
+    return success ? EXIT_SUCCESS : EXIT_FAILURE;
 }
-
diff --git a/src/dhcp/nm-dhcp-listener.c b/src/dhcp/nm-dhcp-listener.c
index 79dea898..c90590d5 100644
--- a/src/dhcp/nm-dhcp-listener.c
+++ b/src/dhcp/nm-dhcp-listener.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2014 - 2016 Red Hat, Inc.
  */
@@ -20,302 +20,299 @@
 #include "nm-dbus-manager.h"
 #include "NetworkManagerUtils.h"
 
-#define PRIV_SOCK_PATH            NMRUNDIR "/private-dhcp"
-#define PRIV_SOCK_TAG             "dhcp"
+#define PRIV_SOCK_PATH NMRUNDIR "/private-dhcp"
+#define PRIV_SOCK_TAG  "dhcp"
 
 /*****************************************************************************/
 
 const NMDhcpClientFactory *const _nm_dhcp_manager_factories[6] = {
-	/* the order here matters, as we will try the plugins in this order to find
-	 * the first available plugin. */
+/* the order here matters, as we will try the plugins in this order to find
+     * the first available plugin. */
 
 #if WITH_DHCPCANON
-	&_nm_dhcp_client_factory_dhcpcanon,
+    &_nm_dhcp_client_factory_dhcpcanon,
 #endif
 #if WITH_DHCLIENT
-	&_nm_dhcp_client_factory_dhclient,
+    &_nm_dhcp_client_factory_dhclient,
 #endif
 #if WITH_DHCPCD
-	&_nm_dhcp_client_factory_dhcpcd,
+    &_nm_dhcp_client_factory_dhcpcd,
 #endif
-	&_nm_dhcp_client_factory_internal,
-	&_nm_dhcp_client_factory_systemd,
-	&_nm_dhcp_client_factory_nettools,
+    &_nm_dhcp_client_factory_internal,
+    &_nm_dhcp_client_factory_systemd,
+    &_nm_dhcp_client_factory_nettools,
 };
 
 /*****************************************************************************/
 
 typedef struct {
-	NMDBusManager *dbus_mgr;
-	gulong         new_conn_id;
-	gulong         dis_conn_id;
-	GHashTable    *connections;
+    NMDBusManager *dbus_mgr;
+    gulong         new_conn_id;
+    gulong         dis_conn_id;
+    GHashTable *   connections;
 } NMDhcpListenerPrivate;
 
 struct _NMDhcpListener {
-	GObject parent;
-	NMDhcpListenerPrivate _priv;
+    GObject               parent;
+    NMDhcpListenerPrivate _priv;
 };
 
 struct _NMDhcpListenerClass {
-	GObjectClass parent;
+    GObjectClass parent;
 };
 
-enum {
-	EVENT,
-	LAST_SIGNAL
-};
-static guint signals[LAST_SIGNAL] = { 0 };
+enum { EVENT, LAST_SIGNAL };
+static guint signals[LAST_SIGNAL] = {0};
 
-G_DEFINE_TYPE (NMDhcpListener, nm_dhcp_listener, G_TYPE_OBJECT)
+G_DEFINE_TYPE(NMDhcpListener, nm_dhcp_listener, G_TYPE_OBJECT)
 
-#define NM_DHCP_LISTENER_GET_PRIVATE(self) _NM_GET_PRIVATE(self, NMDhcpListener, NM_IS_DHCP_LISTENER)
+#define NM_DHCP_LISTENER_GET_PRIVATE(self) \
+    _NM_GET_PRIVATE(self, NMDhcpListener, NM_IS_DHCP_LISTENER)
 
-NM_DEFINE_SINGLETON_GETTER (NMDhcpListener, nm_dhcp_listener_get, NM_TYPE_DHCP_LISTENER);
+NM_DEFINE_SINGLETON_GETTER(NMDhcpListener, nm_dhcp_listener_get, NM_TYPE_DHCP_LISTENER);
 
 /*****************************************************************************/
 
-#define _NMLOG_PREFIX_NAME    "dhcp-listener"
-#define _NMLOG_DOMAIN         LOGD_DHCP
-#define _NMLOG(level, ...) \
-    G_STMT_START { \
-        const NMDhcpListener *_self = (self); \
-        char _prefix[64]; \
-        \
-        nm_log ((level), (_NMLOG_DOMAIN), NULL, NULL, \
-                "%s: " _NM_UTILS_MACRO_FIRST(__VA_ARGS__), \
-                (_self != singleton_instance \
-                    ? nm_sprintf_buf (_prefix, "%s[%p]", _NMLOG_PREFIX_NAME, _self) \
-                    : _NMLOG_PREFIX_NAME )\
-                _NM_UTILS_MACRO_REST(__VA_ARGS__)); \
-    } G_STMT_END
+#define _NMLOG_PREFIX_NAME "dhcp-listener"
+#define _NMLOG_DOMAIN      LOGD_DHCP
+#define _NMLOG(level, ...)                                                         \
+    G_STMT_START                                                                   \
+    {                                                                              \
+        const NMDhcpListener *_self = (self);                                      \
+        char                  _prefix[64];                                         \
+                                                                                   \
+        nm_log((level),                                                            \
+               (_NMLOG_DOMAIN),                                                    \
+               NULL,                                                               \
+               NULL,                                                               \
+               "%s: " _NM_UTILS_MACRO_FIRST(__VA_ARGS__),                          \
+               (_self != singleton_instance                                        \
+                    ? nm_sprintf_buf(_prefix, "%s[%p]", _NMLOG_PREFIX_NAME, _self) \
+                    : _NMLOG_PREFIX_NAME) _NM_UTILS_MACRO_REST(__VA_ARGS__));      \
+    }                                                                              \
+    G_STMT_END
 
 /*****************************************************************************/
 
 static char *
-get_option (GVariant *options, const char *key)
+get_option(GVariant *options, const char *key)
 {
-	GVariant *value;
-	const guchar *bytes, *s;
-	gsize len;
-	char *converted, *d;
-
-	if (!g_variant_lookup (options, key, "@ay", &value))
-		return NULL;
-
-	bytes = g_variant_get_fixed_array (value, &len, 1);
-
-	/* Since the DHCP options come through environment variables, they should
-	 * already be UTF-8 safe, but just make sure.
-	 */
-	converted = g_malloc (len + 1);
-	for (s = bytes, d = converted; s < bytes + len; s++, d++) {
-		/* Convert NULLs to spaces and non-ASCII characters to ? */
-		if (*s == '\0')
-			*d = ' ';
-		else if (*s > 127)
-			*d = '?';
-		else
-			*d = *s;
-	}
-	*d = '\0';
-	g_variant_unref (value);
-
-	return converted;
+    GVariant *    value;
+    const guchar *bytes, *s;
+    gsize         len;
+    char *        converted, *d;
+
+    if (!g_variant_lookup(options, key, "@ay", &value))
+        return NULL;
+
+    bytes = g_variant_get_fixed_array(value, &len, 1);
+
+    /* Since the DHCP options come through environment variables, they should
+     * already be UTF-8 safe, but just make sure.
+     */
+    converted = g_malloc(len + 1);
+    for (s = bytes, d = converted; s < bytes + len; s++, d++) {
+        /* Convert NULLs to spaces and non-ASCII characters to ? */
+        if (*s == '\0')
+            *d = ' ';
+        else if (*s > 127)
+            *d = '?';
+        else
+            *d = *s;
+    }
+    *d = '\0';
+    g_variant_unref(value);
+
+    return converted;
 }
 
 static void
-_method_call_handle (NMDhcpListener *self,
-                     GVariant *parameters)
+_method_call_handle(NMDhcpListener *self, GVariant *parameters)
 {
-	gs_free char *iface = NULL;
-	gs_free char *pid_str = NULL;
-	gs_free char *reason = NULL;
-	gs_unref_variant GVariant *options = NULL;
-	int pid;
-	gboolean handled = FALSE;
-
-	g_variant_get (parameters, "(@a{sv})", &options);
-
-	iface = get_option (options, "interface");
-	if (iface == NULL) {
-		_LOGW ("dhcp-event: didn't have associated interface.");
-		return;
-	}
-
-	pid_str = get_option (options, "pid");
-	pid = _nm_utils_ascii_str_to_int64 (pid_str, 10, 0, G_MAXINT32, -1);
-	if (pid == -1) {
-		_LOGW ("dhcp-event: couldn't convert PID '%s' to an integer", pid_str ?: "(null)");
-		return;
-	}
-
-	reason = get_option (options, "reason");
-	if (reason == NULL) {
-		_LOGW ("dhcp-event: (pid %d) DHCP event didn't have a reason", pid);
-		return;
-	}
-
-	g_signal_emit (self, signals[EVENT], 0, iface, pid, options, reason, &handled);
-	if (!handled) {
-		if (g_ascii_strcasecmp (reason, "RELEASE") == 0) {
-			/* Ignore event when the dhcp client gets killed and we receive its last message */
-			_LOGD ("dhcp-event: (pid %d) unhandled RELEASE DHCP event for interface %s", pid, iface);
-		} else
-			_LOGW ("dhcp-event: (pid %d) unhandled DHCP event for interface %s", pid, iface);
-	}
+    gs_free char *   iface             = NULL;
+    gs_free char *   pid_str           = NULL;
+    gs_free char *   reason            = NULL;
+    gs_unref_variant GVariant *options = NULL;
+    int                        pid;
+    gboolean                   handled = FALSE;
+
+    g_variant_get(parameters, "(@a{sv})", &options);
+
+    iface = get_option(options, "interface");
+    if (iface == NULL) {
+        _LOGW("dhcp-event: didn't have associated interface.");
+        return;
+    }
+
+    pid_str = get_option(options, "pid");
+    pid     = _nm_utils_ascii_str_to_int64(pid_str, 10, 0, G_MAXINT32, -1);
+    if (pid == -1) {
+        _LOGW("dhcp-event: couldn't convert PID '%s' to an integer", pid_str ?: "(null)");
+        return;
+    }
+
+    reason = get_option(options, "reason");
+    if (reason == NULL) {
+        _LOGW("dhcp-event: (pid %d) DHCP event didn't have a reason", pid);
+        return;
+    }
+
+    g_signal_emit(self, signals[EVENT], 0, iface, pid, options, reason, &handled);
+    if (!handled) {
+        if (g_ascii_strcasecmp(reason, "RELEASE") == 0) {
+            /* Ignore event when the dhcp client gets killed and we receive its last message */
+            _LOGD("dhcp-event: (pid %d) unhandled RELEASE DHCP event for interface %s", pid, iface);
+        } else
+            _LOGW("dhcp-event: (pid %d) unhandled DHCP event for interface %s", pid, iface);
+    }
 }
 
 static void
-_method_call (GDBusConnection *connection,
-              const char *sender,
-              const char *object_path,
-              const char *interface_name,
-              const char *method_name,
-              GVariant *parameters,
-              GDBusMethodInvocation *invocation,
-              gpointer user_data)
+_method_call(GDBusConnection *      connection,
+             const char *           sender,
+             const char *           object_path,
+             const char *           interface_name,
+             const char *           method_name,
+             GVariant *             parameters,
+             GDBusMethodInvocation *invocation,
+             gpointer               user_data)
 {
-	NMDhcpListener *self = NM_DHCP_LISTENER (user_data);
-
-	if (   !nm_streq (interface_name, NM_DHCP_HELPER_SERVER_INTERFACE_NAME)
-	    || !nm_streq (method_name, NM_DHCP_HELPER_SERVER_METHOD_NOTIFY)) {
-		g_dbus_method_invocation_return_error (invocation,
-		                                       G_DBUS_ERROR,
-		                                       G_DBUS_ERROR_UNKNOWN_METHOD,
-		                                       "Unknown method %s",
-		                                       method_name);
-		return;
-	}
-
-	_method_call_handle (self, parameters);
-	g_dbus_method_invocation_return_value (invocation, NULL);
+    NMDhcpListener *self = NM_DHCP_LISTENER(user_data);
+
+    if (!nm_streq(interface_name, NM_DHCP_HELPER_SERVER_INTERFACE_NAME)
+        || !nm_streq(method_name, NM_DHCP_HELPER_SERVER_METHOD_NOTIFY)) {
+        g_dbus_method_invocation_return_error(invocation,
+                                              G_DBUS_ERROR,
+                                              G_DBUS_ERROR_UNKNOWN_METHOD,
+                                              "Unknown method %s",
+                                              method_name);
+        return;
+    }
+
+    _method_call_handle(self, parameters);
+    g_dbus_method_invocation_return_value(invocation, NULL);
 }
 
-static GDBusInterfaceInfo *const interface_info = NM_DEFINE_GDBUS_INTERFACE_INFO (
-	NM_DHCP_HELPER_SERVER_INTERFACE_NAME,
-	.methods = NM_DEFINE_GDBUS_METHOD_INFOS (
-		NM_DEFINE_GDBUS_METHOD_INFO (
-			NM_DHCP_HELPER_SERVER_METHOD_NOTIFY,
-			.in_args = NM_DEFINE_GDBUS_ARG_INFOS (
-				NM_DEFINE_GDBUS_ARG_INFO ("data", "a{sv}"),
-			),
-		),
-	),
-);
+static GDBusInterfaceInfo *const interface_info = NM_DEFINE_GDBUS_INTERFACE_INFO(
+    NM_DHCP_HELPER_SERVER_INTERFACE_NAME,
+    .methods = NM_DEFINE_GDBUS_METHOD_INFOS(
+        NM_DEFINE_GDBUS_METHOD_INFO(NM_DHCP_HELPER_SERVER_METHOD_NOTIFY,
+                                    .in_args = NM_DEFINE_GDBUS_ARG_INFOS(
+                                        NM_DEFINE_GDBUS_ARG_INFO("data", "a{sv}"), ), ), ), );
 
 static guint
-_dbus_connection_register_object (NMDhcpListener *self,
-                                  GDBusConnection *connection,
-                                  GError **error)
+_dbus_connection_register_object(NMDhcpListener *self, GDBusConnection *connection, GError **error)
 {
-	static const GDBusInterfaceVTable interface_vtable = {
-		.method_call = _method_call,
-	};
-
-	return g_dbus_connection_register_object (connection,
-	                                          NM_DHCP_HELPER_SERVER_OBJECT_PATH,
-	                                          interface_info,
-	                                          NM_UNCONST_PTR (GDBusInterfaceVTable, &interface_vtable),
-	                                          self,
-	                                          NULL,
-	                                          error);
+    static const GDBusInterfaceVTable interface_vtable = {
+        .method_call = _method_call,
+    };
+
+    return g_dbus_connection_register_object(
+        connection,
+        NM_DHCP_HELPER_SERVER_OBJECT_PATH,
+        interface_info,
+        NM_UNCONST_PTR(GDBusInterfaceVTable, &interface_vtable),
+        self,
+        NULL,
+        error);
 }
 
 static void
-new_connection_cb (NMDBusManager *mgr,
-                   GDBusConnection *connection,
-                   GDBusObjectManager *manager,
-                   NMDhcpListener *self)
+new_connection_cb(NMDBusManager *     mgr,
+                  GDBusConnection *   connection,
+                  GDBusObjectManager *manager,
+                  NMDhcpListener *    self)
 {
-	NMDhcpListenerPrivate *priv = NM_DHCP_LISTENER_GET_PRIVATE (self);
-	guint registration_id;
-	GError *error = NULL;
-
-	/* it is important to register the object during the new-connection signal,
-	 * as this avoids races with the connecting object. */
-	registration_id = _dbus_connection_register_object (self, connection, &error);
-	if (!registration_id) {
-		_LOGE ("failure to register %s for connection %p: %s",
-		       NM_DHCP_HELPER_SERVER_OBJECT_PATH, connection, error->message);
-		g_error_free (error);
-		return;
-	}
-
-	g_hash_table_insert (priv->connections, connection, GUINT_TO_POINTER (registration_id));
+    NMDhcpListenerPrivate *priv = NM_DHCP_LISTENER_GET_PRIVATE(self);
+    guint                  registration_id;
+    GError *               error = NULL;
+
+    /* it is important to register the object during the new-connection signal,
+     * as this avoids races with the connecting object. */
+    registration_id = _dbus_connection_register_object(self, connection, &error);
+    if (!registration_id) {
+        _LOGE("failure to register %s for connection %p: %s",
+              NM_DHCP_HELPER_SERVER_OBJECT_PATH,
+              connection,
+              error->message);
+        g_error_free(error);
+        return;
+    }
+
+    g_hash_table_insert(priv->connections, connection, GUINT_TO_POINTER(registration_id));
 }
 
 static void
-dis_connection_cb (NMDBusManager *mgr,
-                   GDBusConnection *connection,
-                   NMDhcpListener *self)
+dis_connection_cb(NMDBusManager *mgr, GDBusConnection *connection, NMDhcpListener *self)
 {
-	NMDhcpListenerPrivate *priv = NM_DHCP_LISTENER_GET_PRIVATE (self);
-	guint id;
-
-	id = GPOINTER_TO_UINT (g_hash_table_lookup (priv->connections, connection));
-	if (id) {
-		g_dbus_connection_unregister_object (connection, id);
-		g_hash_table_remove (priv->connections, connection);
-	}
+    NMDhcpListenerPrivate *priv = NM_DHCP_LISTENER_GET_PRIVATE(self);
+    guint                  id;
+
+    id = GPOINTER_TO_UINT(g_hash_table_lookup(priv->connections, connection));
+    if (id) {
+        g_dbus_connection_unregister_object(connection, id);
+        g_hash_table_remove(priv->connections, connection);
+    }
 }
 
 /*****************************************************************************/
 
 static void
-nm_dhcp_listener_init (NMDhcpListener *self)
+nm_dhcp_listener_init(NMDhcpListener *self)
 {
-	NMDhcpListenerPrivate *priv = NM_DHCP_LISTENER_GET_PRIVATE (self);
-
-	/* Maps GDBusConnection :: signal-id */
-	priv->connections = g_hash_table_new (nm_direct_hash, NULL);
-
-	priv->dbus_mgr = g_object_ref (nm_dbus_manager_get ());
-
-	/* Register the socket our DHCP clients will return lease info on */
-	nm_dbus_manager_private_server_register (priv->dbus_mgr, PRIV_SOCK_PATH, PRIV_SOCK_TAG);
-	priv->new_conn_id = g_signal_connect (priv->dbus_mgr,
-	                                      NM_DBUS_MANAGER_PRIVATE_CONNECTION_NEW "::" PRIV_SOCK_TAG,
-	                                      G_CALLBACK (new_connection_cb),
-	                                      self);
-	priv->dis_conn_id = g_signal_connect (priv->dbus_mgr,
-	                                      NM_DBUS_MANAGER_PRIVATE_CONNECTION_DISCONNECTED "::" PRIV_SOCK_TAG,
-	                                      G_CALLBACK (dis_connection_cb),
-	                                      self);
+    NMDhcpListenerPrivate *priv = NM_DHCP_LISTENER_GET_PRIVATE(self);
+
+    /* Maps GDBusConnection :: signal-id */
+    priv->connections = g_hash_table_new(nm_direct_hash, NULL);
+
+    priv->dbus_mgr = g_object_ref(nm_dbus_manager_get());
+
+    /* Register the socket our DHCP clients will return lease info on */
+    nm_dbus_manager_private_server_register(priv->dbus_mgr, PRIV_SOCK_PATH, PRIV_SOCK_TAG);
+    priv->new_conn_id = g_signal_connect(priv->dbus_mgr,
+                                         NM_DBUS_MANAGER_PRIVATE_CONNECTION_NEW "::" PRIV_SOCK_TAG,
+                                         G_CALLBACK(new_connection_cb),
+                                         self);
+    priv->dis_conn_id =
+        g_signal_connect(priv->dbus_mgr,
+                         NM_DBUS_MANAGER_PRIVATE_CONNECTION_DISCONNECTED "::" PRIV_SOCK_TAG,
+                         G_CALLBACK(dis_connection_cb),
+                         self);
 }
 
 static void
-dispose (GObject *object)
+dispose(GObject *object)
 {
-	NMDhcpListenerPrivate *priv = NM_DHCP_LISTENER_GET_PRIVATE (object);
+    NMDhcpListenerPrivate *priv = NM_DHCP_LISTENER_GET_PRIVATE(object);
 
-	nm_clear_g_signal_handler (priv->dbus_mgr, &priv->new_conn_id);
-	nm_clear_g_signal_handler (priv->dbus_mgr, &priv->dis_conn_id);
+    nm_clear_g_signal_handler(priv->dbus_mgr, &priv->new_conn_id);
+    nm_clear_g_signal_handler(priv->dbus_mgr, &priv->dis_conn_id);
 
-	nm_clear_pointer (&priv->connections, g_hash_table_destroy);
+    nm_clear_pointer(&priv->connections, g_hash_table_destroy);
 
-	g_clear_object (&priv->dbus_mgr);
+    g_clear_object(&priv->dbus_mgr);
 
-	G_OBJECT_CLASS (nm_dhcp_listener_parent_class)->dispose (object);
+    G_OBJECT_CLASS(nm_dhcp_listener_parent_class)->dispose(object);
 }
 
 static void
-nm_dhcp_listener_class_init (NMDhcpListenerClass *listener_class)
+nm_dhcp_listener_class_init(NMDhcpListenerClass *listener_class)
 {
-	GObjectClass *object_class = G_OBJECT_CLASS (listener_class);
-
-	object_class->dispose = dispose;
-
-	signals[EVENT] =
-	    g_signal_new (NM_DHCP_LISTENER_EVENT,
-	                  G_OBJECT_CLASS_TYPE (object_class),
-	                  G_SIGNAL_RUN_LAST, 0,
-	                  g_signal_accumulator_true_handled,
-	                  NULL, NULL,
-	                  G_TYPE_BOOLEAN,     /* listeners return TRUE if handled */
-	                  4,
-	                  G_TYPE_STRING,      /* iface */
-	                  G_TYPE_INT,         /* pid */
-	                  G_TYPE_VARIANT,     /* options */
-	                  G_TYPE_STRING);     /* reason */
+    GObjectClass *object_class = G_OBJECT_CLASS(listener_class);
+
+    object_class->dispose = dispose;
+
+    signals[EVENT] = g_signal_new(NM_DHCP_LISTENER_EVENT,
+                                  G_OBJECT_CLASS_TYPE(object_class),
+                                  G_SIGNAL_RUN_LAST,
+                                  0,
+                                  g_signal_accumulator_true_handled,
+                                  NULL,
+                                  NULL,
+                                  G_TYPE_BOOLEAN, /* listeners return TRUE if handled */
+                                  4,
+                                  G_TYPE_STRING,  /* iface */
+                                  G_TYPE_INT,     /* pid */
+                                  G_TYPE_VARIANT, /* options */
+                                  G_TYPE_STRING); /* reason */
 }
diff --git a/src/dhcp/nm-dhcp-listener.h b/src/dhcp/nm-dhcp-listener.h
index c2b90dc3..57d3b0fc 100644
--- a/src/dhcp/nm-dhcp-listener.h
+++ b/src/dhcp/nm-dhcp-listener.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2014 Red Hat, Inc.
  */
@@ -6,18 +6,20 @@
 #ifndef __NETWORKMANAGER_DHCP_LISTENER_H__
 #define __NETWORKMANAGER_DHCP_LISTENER_H__
 
-#define NM_TYPE_DHCP_LISTENER           (nm_dhcp_listener_get_type ())
-#define NM_DHCP_LISTENER(obj)           (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_DHCP_LISTENER, NMDhcpListener))
-#define NM_IS_DHCP_LISTENER(obj)        (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_DHCP_LISTENER))
-#define NM_DHCP_LISTENER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_DHCP_LISTENER, NMDhcpListenerClass))
+#define NM_TYPE_DHCP_LISTENER (nm_dhcp_listener_get_type())
+#define NM_DHCP_LISTENER(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_DHCP_LISTENER, NMDhcpListener))
+#define NM_IS_DHCP_LISTENER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_DHCP_LISTENER))
+#define NM_DHCP_LISTENER_GET_CLASS(obj) \
+    (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_DHCP_LISTENER, NMDhcpListenerClass))
 
 #define NM_DHCP_LISTENER_EVENT "event"
 
-typedef struct _NMDhcpListener NMDhcpListener;
+typedef struct _NMDhcpListener      NMDhcpListener;
 typedef struct _NMDhcpListenerClass NMDhcpListenerClass;
 
-GType nm_dhcp_listener_get_type (void);
+GType nm_dhcp_listener_get_type(void);
 
-NMDhcpListener *nm_dhcp_listener_get (void);
+NMDhcpListener *nm_dhcp_listener_get(void);
 
 #endif /* __NETWORKMANAGER_DHCP_LISTENER_H__ */
diff --git a/src/dhcp/nm-dhcp-manager.c b/src/dhcp/nm-dhcp-manager.c
index fc99a30a..665944d7 100644
--- a/src/dhcp/nm-dhcp-manager.c
+++ b/src/dhcp/nm-dhcp-manager.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2005 - 2013 Red Hat, Inc.
  * Copyright (C) 2006 - 2008 Novell, Inc.
@@ -25,23 +25,31 @@
 /*****************************************************************************/
 
 typedef struct {
-	const NMDhcpClientFactory *client_factory;
-	char *default_hostname;
-	CList dhcp_client_lst_head;
+    const NMDhcpClientFactory *client_factory;
+    char *                     default_hostname;
+    CList                      dhcp_client_lst_head;
 } NMDhcpManagerPrivate;
 
 struct _NMDhcpManager {
-	GObject parent;
-	NMDhcpManagerPrivate _priv;
+    GObject              parent;
+    NMDhcpManagerPrivate _priv;
 };
 
 struct _NMDhcpManagerClass {
-	GObjectClass parent;
+    GObjectClass parent;
 };
 
-G_DEFINE_TYPE (NMDhcpManager, nm_dhcp_manager, G_TYPE_OBJECT)
+G_DEFINE_TYPE(NMDhcpManager, nm_dhcp_manager, G_TYPE_OBJECT)
 
-#define NM_DHCP_MANAGER_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDhcpManager, NM_IS_DHCP_MANAGER)
+#define NM_DHCP_MANAGER_GET_PRIVATE(self) _NM_GET_PRIVATE(self, NMDhcpManager, NM_IS_DHCP_MANAGER)
+
+/*****************************************************************************/
+
+static void client_state_changed(NMDhcpClient * client,
+                                 NMDhcpState    state,
+                                 GObject *      ip_config,
+                                 GVariant *     options,
+                                 NMDhcpManager *self);
 
 /*****************************************************************************/
 
@@ -51,597 +59,624 @@ const char *nm_dhcp_helper_path = LIBEXECDIR "/nm-dhcp-helper";
 /*****************************************************************************/
 
 static const NMDhcpClientFactory *
-_client_factory_find_by_name (const char *name)
+_client_factory_find_by_name(const char *name)
 {
-	int i;
+    int i;
 
-	g_return_val_if_fail (name, NULL);
+    g_return_val_if_fail(name, NULL);
 
-	for (i = 0; i < G_N_ELEMENTS (_nm_dhcp_manager_factories); i++) {
-		const NMDhcpClientFactory *f = _nm_dhcp_manager_factories[i];
+    for (i = 0; i < G_N_ELEMENTS(_nm_dhcp_manager_factories); i++) {
+        const NMDhcpClientFactory *f = _nm_dhcp_manager_factories[i];
 
-		if (f && nm_streq (f->name, name))
-			return f;
-	}
-	return NULL;
+        if (f && nm_streq(f->name, name))
+            return f;
+    }
+    return NULL;
 }
 
 static const NMDhcpClientFactory *
-_client_factory_available (const NMDhcpClientFactory *client_factory)
+_client_factory_available(const NMDhcpClientFactory *client_factory)
 {
-	if (   client_factory
-	    && (!client_factory->get_path || client_factory->get_path ()))
-		return client_factory;
-	return NULL;
+    if (client_factory && (!client_factory->get_path || client_factory->get_path()))
+        return client_factory;
+    return NULL;
 }
 
 static GType
-_client_factory_get_gtype (const NMDhcpClientFactory *client_factory,
-                           int addr_family)
+_client_factory_get_gtype(const NMDhcpClientFactory *client_factory, int addr_family)
 {
-	GType gtype;
-	nm_auto_unref_gtypeclass NMDhcpClientClass *klass = NULL;
-
-	nm_assert (client_factory);
-	nm_assert_addr_family (addr_family);
-
-	/* currently, the chosen DHCP plugin for IPv4 and IPv6 is configured in NetworkManager.conf
-	 * and cannot be reloaded. It would be nice to configure the plugin per address family
-	 * or to be able to reload it.
-	 *
-	 * Note that certain options in NetworkManager.conf depend on the chosen DHCP plugin.
-	 * See "dhcp-plugin:" in "Device List Format" (`man NetworkManager.conf`).
-	 * Supporting reloading the plugin would also require to re-evalate the decisions from
-	 * the "Device List Format". Likewise, having per-address family plugins would make the
-	 * "main.dhcp" setting and "dhcp-plugin:" match non-sensical because these configurations
-	 * currently are address family independet.
-	 *
-	 * So actually, we don't want that complexity. We want to phase out all plugins in favor
-	 * of the internal plugin.
-	 * However, certain existing plugins are well known to not support an address family.
-	 * In those cases, we should just silently fallback to the internal plugin.
-	 *
-	 * This could be a problem with forward compatibility if we ever intended to add IPv6 support
-	 * to those plugins. But we don't intend to do so. The internal plugin is the way forward and
-	 * not extending other plugins. */
-
-	if (client_factory->get_type_per_addr_family)
-		gtype = client_factory->get_type_per_addr_family (addr_family);
-	else
-		gtype = client_factory->get_type ();
-
-	if (client_factory == &_nm_dhcp_client_factory_internal) {
-		/* we are already using the internal plugin. Nothing to do. */
-		goto out;
-	}
-
-	klass = g_type_class_ref (gtype);
-
-	nm_assert (NM_IS_DHCP_CLIENT_CLASS (klass));
-
-	if (addr_family == AF_INET6) {
-		if (!klass->ip6_start)
-			gtype = _client_factory_get_gtype (&_nm_dhcp_client_factory_internal, addr_family);
-	} else {
-		if (!klass->ip4_start)
-			gtype = _client_factory_get_gtype (&_nm_dhcp_client_factory_internal, addr_family);
-	}
+    GType                    gtype;
+    nm_auto_unref_gtypeclass NMDhcpClientClass *klass = NULL;
+
+    nm_assert(client_factory);
+    nm_assert_addr_family(addr_family);
+
+    /* currently, the chosen DHCP plugin for IPv4 and IPv6 is configured in NetworkManager.conf
+     * and cannot be reloaded. It would be nice to configure the plugin per address family
+     * or to be able to reload it.
+     *
+     * Note that certain options in NetworkManager.conf depend on the chosen DHCP plugin.
+     * See "dhcp-plugin:" in "Device List Format" (`man NetworkManager.conf`).
+     * Supporting reloading the plugin would also require to re-evalate the decisions from
+     * the "Device List Format". Likewise, having per-address family plugins would make the
+     * "main.dhcp" setting and "dhcp-plugin:" match non-sensical because these configurations
+     * currently are address family independent.
+     *
+     * So actually, we don't want that complexity. We want to phase out all plugins in favor
+     * of the internal plugin.
+     * However, certain existing plugins are well known to not support an address family.
+     * In those cases, we should just silently fallback to the internal plugin.
+     *
+     * This could be a problem with forward compatibility if we ever intended to add IPv6 support
+     * to those plugins. But we don't intend to do so. The internal plugin is the way forward and
+     * not extending other plugins. */
+
+    if (client_factory->get_type_per_addr_family)
+        gtype = client_factory->get_type_per_addr_family(addr_family);
+    else
+        gtype = client_factory->get_type();
+
+    if (client_factory == &_nm_dhcp_client_factory_internal) {
+        /* we are already using the internal plugin. Nothing to do. */
+        goto out;
+    }
+
+    klass = g_type_class_ref(gtype);
+
+    nm_assert(NM_IS_DHCP_CLIENT_CLASS(klass));
+
+    if (addr_family == AF_INET6) {
+        if (!klass->ip6_start)
+            gtype = _client_factory_get_gtype(&_nm_dhcp_client_factory_internal, addr_family);
+    } else {
+        if (!klass->ip4_start)
+            gtype = _client_factory_get_gtype(&_nm_dhcp_client_factory_internal, addr_family);
+    }
 
 out:
-	nm_assert (g_type_is_a (gtype, NM_TYPE_DHCP_CLIENT));
-	nm_assert (({
-	               nm_auto_unref_gtypeclass NMDhcpClientClass *k = g_type_class_ref (gtype);
+    nm_assert(g_type_is_a(gtype, NM_TYPE_DHCP_CLIENT));
+    nm_assert(({
+        nm_auto_unref_gtypeclass NMDhcpClientClass *k = g_type_class_ref(gtype);
 
-	                  (addr_family == AF_INET6 && k->ip6_start)
-	               || (addr_family == AF_INET  && k->ip4_start);
-	            }));
+        (addr_family == AF_INET6 && k->ip6_start) || (addr_family == AF_INET && k->ip4_start);
+    }));
 
-	return gtype;
+    return gtype;
 }
 
 /*****************************************************************************/
 
 static NMDhcpClient *
-get_client_for_ifindex (NMDhcpManager *manager, int addr_family, int ifindex)
+get_client_for_ifindex(NMDhcpManager *manager, int addr_family, int ifindex)
 {
-	NMDhcpManagerPrivate *priv;
-	NMDhcpClient *client;
+    NMDhcpManagerPrivate *priv;
+    NMDhcpClient *        client;
 
-	g_return_val_if_fail (NM_IS_DHCP_MANAGER (manager), NULL);
-	g_return_val_if_fail (ifindex > 0, NULL);
+    g_return_val_if_fail(NM_IS_DHCP_MANAGER(manager), NULL);
+    g_return_val_if_fail(ifindex > 0, NULL);
 
-	priv = NM_DHCP_MANAGER_GET_PRIVATE (manager);
+    priv = NM_DHCP_MANAGER_GET_PRIVATE(manager);
 
-	c_list_for_each_entry (client, &priv->dhcp_client_lst_head, dhcp_client_lst) {
-		if (   nm_dhcp_client_get_ifindex (client) == ifindex
-		    && nm_dhcp_client_get_addr_family (client) == addr_family)
-			return client;
-	}
+    c_list_for_each_entry (client, &priv->dhcp_client_lst_head, dhcp_client_lst) {
+        if (nm_dhcp_client_get_ifindex(client) == ifindex
+            && nm_dhcp_client_get_addr_family(client) == addr_family)
+            return client;
+    }
 
-	return NULL;
+    return NULL;
 }
 
-static void client_state_changed (NMDhcpClient *client,
-                                  NMDhcpState state,
-                                  GObject *ip_config,
-                                  GVariant *options,
-                                  const char *event_id,
-                                  NMDhcpManager *self);
-
 static void
-remove_client (NMDhcpManager *self, NMDhcpClient *client)
+remove_client(NMDhcpManager *self, NMDhcpClient *client)
 {
-	g_signal_handlers_disconnect_by_func (client, client_state_changed, self);
-	c_list_unlink (&client->dhcp_client_lst);
+    g_signal_handlers_disconnect_by_func(client, client_state_changed, self);
+    c_list_unlink(&client->dhcp_client_lst);
 
-	/* Stopping the client is left up to the controlling device
-	 * explicitly since we may want to quit NetworkManager but not terminate
-	 * the DHCP client.
-	 */
+    /* Stopping the client is left up to the controlling device
+     * explicitly since we may want to quit NetworkManager but not terminate
+     * the DHCP client.
+     */
 }
 
 static void
-remove_client_unref (NMDhcpManager *self, NMDhcpClient *client)
+remove_client_unref(NMDhcpManager *self, NMDhcpClient *client)
 {
-	remove_client (self, client);
-	g_object_unref (client);
+    remove_client(self, client);
+    g_object_unref(client);
 }
 
 static void
-client_state_changed (NMDhcpClient *client,
-                      NMDhcpState state,
-                      GObject *ip_config,
-                      GVariant *options,
-                      const char *event_id,
-                      NMDhcpManager *self)
+client_state_changed(NMDhcpClient * client,
+                     NMDhcpState    state,
+                     GObject *      ip_config,
+                     GVariant *     options,
+                     NMDhcpManager *self)
 {
-	if (state >= NM_DHCP_STATE_TIMEOUT)
-		remove_client_unref (self, client);
+    if (state >= NM_DHCP_STATE_TIMEOUT)
+        remove_client_unref(self, client);
 }
 
 static NMDhcpClient *
-client_start (NMDhcpManager *self,
-              int addr_family,
-              NMDedupMultiIndex *multi_idx,
-              const char *iface,
-              int ifindex,
-              GBytes *hwaddr,
-              GBytes *bcast_hwaddr,
-              const char *uuid,
-              guint32 route_table,
-              guint32 route_metric,
-              const struct in6_addr *ipv6_ll_addr,
-              GBytes *dhcp_client_id,
-              gboolean enforce_duid,
-              guint32 iaid,
-              gboolean iaid_explicit,
-              guint32 timeout,
-              const char *dhcp_anycast_addr,
-              const char *hostname,
-              gboolean hostname_use_fqdn,
-              NMDhcpHostnameFlags hostname_flags,
-              const char *mud_url,
-              gboolean info_only,
-              NMSettingIP6ConfigPrivacy privacy,
-              const char *last_ip4_address,
-              guint needed_prefixes,
-              GError **error)
+client_start(NMDhcpManager *           self,
+             int                       addr_family,
+             NMDedupMultiIndex *       multi_idx,
+             const char *              iface,
+             int                       ifindex,
+             GBytes *                  hwaddr,
+             GBytes *                  bcast_hwaddr,
+             const char *              uuid,
+             guint32                   route_table,
+             guint32                   route_metric,
+             const struct in6_addr *   ipv6_ll_addr,
+             GBytes *                  dhcp_client_id,
+             gboolean                  enforce_duid,
+             guint32                   iaid,
+             gboolean                  iaid_explicit,
+             guint32                   timeout,
+             const char *              dhcp_anycast_addr,
+             const char *              hostname,
+             gboolean                  hostname_use_fqdn,
+             NMDhcpHostnameFlags       hostname_flags,
+             const char *              mud_url,
+             gboolean                  info_only,
+             NMSettingIP6ConfigPrivacy privacy,
+             const char *              last_ip4_address,
+             guint                     needed_prefixes,
+             GBytes *                  vendor_class_identifier,
+             const char *const *       reject_servers,
+             GError **                 error)
 {
-	NMDhcpManagerPrivate *priv;
-	NMDhcpClient *client;
-	gboolean success = FALSE;
-	gsize hwaddr_len;
-	GType gtype;
-
-	g_return_val_if_fail (NM_IS_DHCP_MANAGER (self), NULL);
-	g_return_val_if_fail (iface, NULL);
-	g_return_val_if_fail (ifindex > 0, NULL);
-	g_return_val_if_fail (uuid != NULL, NULL);
-	g_return_val_if_fail (!dhcp_client_id || g_bytes_get_size (dhcp_client_id) >= 2, NULL);
-	g_return_val_if_fail (!error || !*error, NULL);
-
-	if (addr_family == AF_INET) {
-		if (!hwaddr || !bcast_hwaddr) {
-			nm_utils_error_set (error,
-			                    NM_UTILS_ERROR_UNKNOWN,
-			                    "missing %s address",
-			                    hwaddr ? "broadcast" : "MAC");
-			return NULL;
-		}
-
-		hwaddr_len = g_bytes_get_size (hwaddr);
-		if (   hwaddr_len == 0
-		    || hwaddr_len > NM_UTILS_HWADDR_LEN_MAX) {
-			nm_utils_error_set (error,
-			                    NM_UTILS_ERROR_UNKNOWN,
-			                    "invalid MAC address");
-			g_return_val_if_reached (NULL) ;
-		}
-		nm_assert (g_bytes_get_size (hwaddr) == g_bytes_get_size (bcast_hwaddr));
-	} else {
-		hwaddr = NULL;
-		bcast_hwaddr = NULL;
-	}
-
-	if (hostname) {
-		if (   (hostname_use_fqdn && !nm_sd_dns_name_is_valid (hostname))
-		    || (!hostname_use_fqdn && !nm_sd_hostname_is_valid (hostname, FALSE))) {
-			nm_log_warn (LOGD_DHCP , "dhcp%c: %s '%s' is invalid, will be ignored",
-			             nm_utils_addr_family_to_char (addr_family),
-			             hostname_use_fqdn ? "FQDN" : "hostname",
-			             hostname);
-			hostname = NULL;
-		}
-	}
-
-	priv = NM_DHCP_MANAGER_GET_PRIVATE (self);
-
-	/* Kill any old client instance */
-	client = get_client_for_ifindex (self, addr_family, ifindex);
-	if (client) {
-		/* FIXME: we cannot just call synchronously "stop()" and forget about the client.
-		 * We need to wait for the client to be fully stopped because most/all clients
-		 * cannot quit right away.
-		 *
-		 * FIXME(shutdown): also fix this during shutdown, to wait for all DHCP clients
-		 * to be fully stopped. */
-		remove_client (self, client);
-		nm_dhcp_client_stop (client, FALSE);
-		g_object_unref (client);
-	}
-
-	gtype = _client_factory_get_gtype (priv->client_factory, addr_family);
-
-	nm_log_trace (LOGD_DHCP , "dhcp%c: creating IPv%c DHCP client of type %s",
-	              nm_utils_addr_family_to_char (addr_family),
-	              nm_utils_addr_family_to_char (addr_family),
-	              g_type_name (gtype));
-
-	client = g_object_new (gtype,
-	                       NM_DHCP_CLIENT_MULTI_IDX, multi_idx,
-	                       NM_DHCP_CLIENT_ADDR_FAMILY, addr_family,
-	                       NM_DHCP_CLIENT_INTERFACE, iface,
-	                       NM_DHCP_CLIENT_IFINDEX, ifindex,
-	                       NM_DHCP_CLIENT_HWADDR, hwaddr,
-	                       NM_DHCP_CLIENT_BROADCAST_HWADDR, bcast_hwaddr,
-	                       NM_DHCP_CLIENT_UUID, uuid,
-	                       NM_DHCP_CLIENT_IAID, (guint) iaid,
-	                       NM_DHCP_CLIENT_IAID_EXPLICIT, iaid_explicit,
-	                       NM_DHCP_CLIENT_HOSTNAME, hostname,
-	                       NM_DHCP_CLIENT_MUD_URL, mud_url,
-	                       NM_DHCP_CLIENT_ROUTE_TABLE, (guint) route_table,
-	                       NM_DHCP_CLIENT_ROUTE_METRIC, (guint) route_metric,
-	                       NM_DHCP_CLIENT_TIMEOUT, (guint) timeout,
-	                       NM_DHCP_CLIENT_HOSTNAME_FLAGS, (guint) hostname_flags,
-	                       NM_DHCP_CLIENT_FLAGS, (guint) (0
-	                           | (hostname_use_fqdn ? NM_DHCP_CLIENT_FLAGS_USE_FQDN  : 0)
-	                           | (info_only         ? NM_DHCP_CLIENT_FLAGS_INFO_ONLY : 0)
-	                       ),
-	                       NULL);
-	nm_assert (client && c_list_is_empty (&client->dhcp_client_lst));
-	c_list_link_tail (&priv->dhcp_client_lst_head, &client->dhcp_client_lst);
-	g_signal_connect (client, NM_DHCP_CLIENT_SIGNAL_STATE_CHANGED, G_CALLBACK (client_state_changed), self);
-
-	/* unfortunately, our implementations work differently per address-family regarding client-id/DUID.
-	 *
-	 * - for IPv4, the calling code may determine a client-id (from NM's connection profile).
-	 *   If present, it is taken. If not present, the DHCP plugin uses a plugin specific default.
-	 *     - for "internal" plugin, the default is just "mac".
-	 *     - for "dhclient", we try to get the configuration from dhclient's /etc/dhcp or fallback
-	 *       to whatever dhclient uses by default.
-	 *   We do it this way, because for dhclient the user may configure a default
-	 *   outside of NM, and we want to honor that. Worse, dhclient could be a wapper
-	 *   script where the wrapper script overwrites the client-id. We need to distinguish
-	 *   between: force a particular client-id and leave it unspecified to whatever dhclient
-	 *   wants.
-	 *
-	 * - for IPv6, the calling code always determines a client-id. It also specifies @enforce_duid,
-	 *   to determine whether the given client-id must be used.
-	 *     - for "internal" plugin @enforce_duid doesn't matter and the given client-id is
-	 *       always used.
-	 *     - for "dhclient", @enforce_duid FALSE means to first try to load the DUID from the
-	 *       lease file, and only otherwise fallback to the given client-id.
-	 *     - other plugins don't support DHCPv6.
-	 *   It's done this way, so that existing dhclient setups don't change behavior on upgrade.
-	 *
-	 * This difference is cumbersome and only exists because of "dhclient" which supports hacking the
-	 * default outside of NetworkManager API.
-	 */
-
-	if (addr_family == AF_INET) {
-		success = nm_dhcp_client_start_ip4 (client,
-		                                    dhcp_client_id,
-		                                    dhcp_anycast_addr,
-		                                    last_ip4_address,
-		                                    error);
-	} else {
-		success = nm_dhcp_client_start_ip6 (client,
-		                                    dhcp_client_id,
-		                                    enforce_duid,
-		                                    dhcp_anycast_addr,
-		                                    ipv6_ll_addr,
-		                                    privacy,
-		                                    needed_prefixes,
-		                                    error);
-	}
-
-	if (!success) {
-		remove_client_unref (self, client);
-		return NULL;
-	}
-
-	return g_object_ref (client);
+    NMDhcpManagerPrivate *priv;
+    NMDhcpClient *        client;
+    gboolean              success = FALSE;
+    gsize                 hwaddr_len;
+    GType                 gtype;
+
+    g_return_val_if_fail(NM_IS_DHCP_MANAGER(self), NULL);
+    g_return_val_if_fail(iface, NULL);
+    g_return_val_if_fail(ifindex > 0, NULL);
+    g_return_val_if_fail(uuid != NULL, NULL);
+    g_return_val_if_fail(!dhcp_client_id || g_bytes_get_size(dhcp_client_id) >= 2, NULL);
+    g_return_val_if_fail(!vendor_class_identifier
+                             || g_bytes_get_size(vendor_class_identifier) <= 255,
+                         NULL);
+    g_return_val_if_fail(!error || !*error, NULL);
+
+    if (addr_family == AF_INET) {
+        if (!hwaddr || !bcast_hwaddr) {
+            nm_utils_error_set(error,
+                               NM_UTILS_ERROR_UNKNOWN,
+                               "missing %s address",
+                               hwaddr ? "broadcast" : "MAC");
+            return NULL;
+        }
+
+        hwaddr_len = g_bytes_get_size(hwaddr);
+        if (hwaddr_len == 0 || hwaddr_len > NM_UTILS_HWADDR_LEN_MAX) {
+            nm_utils_error_set(error, NM_UTILS_ERROR_UNKNOWN, "invalid MAC address");
+            g_return_val_if_reached(NULL);
+        }
+        nm_assert(g_bytes_get_size(hwaddr) == g_bytes_get_size(bcast_hwaddr));
+    } else {
+        hwaddr       = NULL;
+        bcast_hwaddr = NULL;
+    }
+
+    if (hostname) {
+        if ((hostname_use_fqdn && !nm_sd_dns_name_is_valid(hostname))
+            || (!hostname_use_fqdn && !nm_sd_hostname_is_valid(hostname, FALSE))) {
+            nm_log_warn(LOGD_DHCP,
+                        "dhcp%c: %s '%s' is invalid, will be ignored",
+                        nm_utils_addr_family_to_char(addr_family),
+                        hostname_use_fqdn ? "FQDN" : "hostname",
+                        hostname);
+            hostname = NULL;
+        }
+    }
+
+    priv = NM_DHCP_MANAGER_GET_PRIVATE(self);
+
+    /* Kill any old client instance */
+    client = get_client_for_ifindex(self, addr_family, ifindex);
+    if (client) {
+        /* FIXME: we cannot just call synchronously "stop()" and forget about the client.
+         * We need to wait for the client to be fully stopped because most/all clients
+         * cannot quit right away.
+         *
+         * FIXME(shutdown): also fix this during shutdown, to wait for all DHCP clients
+         * to be fully stopped. */
+        remove_client(self, client);
+        nm_dhcp_client_stop(client, FALSE);
+        g_object_unref(client);
+    }
+
+    gtype = _client_factory_get_gtype(priv->client_factory, addr_family);
+
+    nm_log_trace(LOGD_DHCP,
+                 "dhcp%c: creating IPv%c DHCP client of type %s",
+                 nm_utils_addr_family_to_char(addr_family),
+                 nm_utils_addr_family_to_char(addr_family),
+                 g_type_name(gtype));
+
+    client = g_object_new(gtype,
+                          NM_DHCP_CLIENT_MULTI_IDX,
+                          multi_idx,
+                          NM_DHCP_CLIENT_ADDR_FAMILY,
+                          addr_family,
+                          NM_DHCP_CLIENT_INTERFACE,
+                          iface,
+                          NM_DHCP_CLIENT_IFINDEX,
+                          ifindex,
+                          NM_DHCP_CLIENT_HWADDR,
+                          hwaddr,
+                          NM_DHCP_CLIENT_BROADCAST_HWADDR,
+                          bcast_hwaddr,
+                          NM_DHCP_CLIENT_UUID,
+                          uuid,
+                          NM_DHCP_CLIENT_IAID,
+                          (guint) iaid,
+                          NM_DHCP_CLIENT_IAID_EXPLICIT,
+                          iaid_explicit,
+                          NM_DHCP_CLIENT_HOSTNAME,
+                          hostname,
+                          NM_DHCP_CLIENT_MUD_URL,
+                          mud_url,
+                          NM_DHCP_CLIENT_ROUTE_TABLE,
+                          (guint) route_table,
+                          NM_DHCP_CLIENT_ROUTE_METRIC,
+                          (guint) route_metric,
+                          NM_DHCP_CLIENT_TIMEOUT,
+                          (guint) timeout,
+                          NM_DHCP_CLIENT_HOSTNAME_FLAGS,
+                          (guint) hostname_flags,
+                          NM_DHCP_CLIENT_VENDOR_CLASS_IDENTIFIER,
+                          vendor_class_identifier,
+                          NM_DHCP_CLIENT_REJECT_SERVERS,
+                          reject_servers,
+                          NM_DHCP_CLIENT_FLAGS,
+                          (guint)(0 | (hostname_use_fqdn ? NM_DHCP_CLIENT_FLAGS_USE_FQDN : 0)
+                                  | (info_only ? NM_DHCP_CLIENT_FLAGS_INFO_ONLY : 0)),
+                          NULL);
+    nm_assert(client && c_list_is_empty(&client->dhcp_client_lst));
+    c_list_link_tail(&priv->dhcp_client_lst_head, &client->dhcp_client_lst);
+    g_signal_connect(client,
+                     NM_DHCP_CLIENT_SIGNAL_STATE_CHANGED,
+                     G_CALLBACK(client_state_changed),
+                     self);
+
+    /* unfortunately, our implementations work differently per address-family regarding client-id/DUID.
+     *
+     * - for IPv4, the calling code may determine a client-id (from NM's connection profile).
+     *   If present, it is taken. If not present, the DHCP plugin uses a plugin specific default.
+     *     - for "internal" plugin, the default is just "mac".
+     *     - for "dhclient", we try to get the configuration from dhclient's /etc/dhcp or fallback
+     *       to whatever dhclient uses by default.
+     *   We do it this way, because for dhclient the user may configure a default
+     *   outside of NM, and we want to honor that. Worse, dhclient could be a wapper
+     *   script where the wrapper script overwrites the client-id. We need to distinguish
+     *   between: force a particular client-id and leave it unspecified to whatever dhclient
+     *   wants.
+     *
+     * - for IPv6, the calling code always determines a client-id. It also specifies @enforce_duid,
+     *   to determine whether the given client-id must be used.
+     *     - for "internal" plugin @enforce_duid doesn't matter and the given client-id is
+     *       always used.
+     *     - for "dhclient", @enforce_duid FALSE means to first try to load the DUID from the
+     *       lease file, and only otherwise fallback to the given client-id.
+     *     - other plugins don't support DHCPv6.
+     *   It's done this way, so that existing dhclient setups don't change behavior on upgrade.
+     *
+     * This difference is cumbersome and only exists because of "dhclient" which supports hacking the
+     * default outside of NetworkManager API.
+     */
+
+    if (addr_family == AF_INET) {
+        success = nm_dhcp_client_start_ip4(client,
+                                           dhcp_client_id,
+                                           dhcp_anycast_addr,
+                                           last_ip4_address,
+                                           error);
+    } else {
+        success = nm_dhcp_client_start_ip6(client,
+                                           dhcp_client_id,
+                                           enforce_duid,
+                                           dhcp_anycast_addr,
+                                           ipv6_ll_addr,
+                                           privacy,
+                                           needed_prefixes,
+                                           error);
+    }
+
+    if (!success) {
+        remove_client_unref(self, client);
+        return NULL;
+    }
+
+    return g_object_ref(client);
 }
 
 /* Caller owns a reference to the NMDhcpClient on return */
 NMDhcpClient *
-nm_dhcp_manager_start_ip4 (NMDhcpManager *self,
-                           NMDedupMultiIndex *multi_idx,
-                           const char *iface,
-                           int ifindex,
-                           GBytes *hwaddr,
-                           GBytes *bcast_hwaddr,
-                           const char *uuid,
-                           guint32 route_table,
-                           guint32 route_metric,
-                           gboolean send_hostname,
-                           const char *dhcp_hostname,
-                           const char *dhcp_fqdn,
-                           NMDhcpHostnameFlags hostname_flags,
-                           const char *mud_url,
-                           GBytes *dhcp_client_id,
-                           guint32 timeout,
-                           const char *dhcp_anycast_addr,
-                           const char *last_ip_address,
-                           GError **error)
+nm_dhcp_manager_start_ip4(NMDhcpManager *     self,
+                          NMDedupMultiIndex * multi_idx,
+                          const char *        iface,
+                          int                 ifindex,
+                          GBytes *            hwaddr,
+                          GBytes *            bcast_hwaddr,
+                          const char *        uuid,
+                          guint32             route_table,
+                          guint32             route_metric,
+                          gboolean            send_hostname,
+                          const char *        dhcp_hostname,
+                          const char *        dhcp_fqdn,
+                          NMDhcpHostnameFlags hostname_flags,
+                          const char *        mud_url,
+                          GBytes *            dhcp_client_id,
+                          guint32             timeout,
+                          const char *        dhcp_anycast_addr,
+                          const char *        last_ip_address,
+                          GBytes *            vendor_class_identifier,
+                          const char *const * reject_servers,
+                          GError **           error)
 {
-	NMDhcpManagerPrivate *priv;
-	const char *hostname = NULL;
-	gs_free char *hostname_tmp = NULL;
-	gboolean use_fqdn = FALSE;
-	char *dot;
-
-	g_return_val_if_fail (NM_IS_DHCP_MANAGER (self), NULL);
-	priv = NM_DHCP_MANAGER_GET_PRIVATE (self);
-
-	if (send_hostname) {
-		/* Use, in order of preference:
-		 *  1. FQDN from configuration
-		 *  2. hostname from configuration
-		 *  3. system hostname (only host part)
-		 */
-		if (dhcp_fqdn) {
-			hostname = dhcp_fqdn;
-			use_fqdn = TRUE;
-		} else if (dhcp_hostname)
-			hostname = dhcp_hostname;
-		else {
-			hostname = priv->default_hostname;
-			if (hostname) {
-				hostname_tmp = g_strdup (hostname);
-				dot = strchr (hostname_tmp, '.');
-				if (dot)
-					*dot = '\0';
-				hostname = hostname_tmp;
-			}
-		}
-	}
-
-	return client_start (self,
-	                     AF_INET,
-	                     multi_idx,
-	                     iface,
-	                     ifindex,
-	                     hwaddr,
-	                     bcast_hwaddr,
-	                     uuid,
-	                     route_table,
-	                     route_metric,
-	                     NULL,
-	                     dhcp_client_id,
-	                     FALSE,
-	                     0,
-	                     FALSE,
-	                     timeout,
-	                     dhcp_anycast_addr,
-	                     hostname,
-	                     use_fqdn,
-	                     hostname_flags,
-	                     mud_url,
-	                     FALSE,
-	                     0,
-	                     last_ip_address,
-	                     0,
-	                     error);
+    NMDhcpManagerPrivate *priv;
+    const char *          hostname     = NULL;
+    gs_free char *        hostname_tmp = NULL;
+    gboolean              use_fqdn     = FALSE;
+    char *                dot;
+
+    g_return_val_if_fail(NM_IS_DHCP_MANAGER(self), NULL);
+    priv = NM_DHCP_MANAGER_GET_PRIVATE(self);
+
+    if (send_hostname) {
+        /* Use, in order of preference:
+         *  1. FQDN from configuration
+         *  2. hostname from configuration
+         *  3. system hostname (only host part)
+         */
+        if (dhcp_fqdn) {
+            hostname = dhcp_fqdn;
+            use_fqdn = TRUE;
+        } else if (dhcp_hostname)
+            hostname = dhcp_hostname;
+        else {
+            hostname = priv->default_hostname;
+            if (hostname) {
+                hostname_tmp = g_strdup(hostname);
+                dot          = strchr(hostname_tmp, '.');
+                if (dot)
+                    *dot = '\0';
+                hostname = hostname_tmp;
+            }
+        }
+    }
+
+    return client_start(self,
+                        AF_INET,
+                        multi_idx,
+                        iface,
+                        ifindex,
+                        hwaddr,
+                        bcast_hwaddr,
+                        uuid,
+                        route_table,
+                        route_metric,
+                        NULL,
+                        dhcp_client_id,
+                        FALSE,
+                        0,
+                        FALSE,
+                        timeout,
+                        dhcp_anycast_addr,
+                        hostname,
+                        use_fqdn,
+                        hostname_flags,
+                        mud_url,
+                        FALSE,
+                        0,
+                        last_ip_address,
+                        0,
+                        vendor_class_identifier,
+                        reject_servers,
+                        error);
 }
 
 /* Caller owns a reference to the NMDhcpClient on return */
 NMDhcpClient *
-nm_dhcp_manager_start_ip6 (NMDhcpManager *self,
-                           NMDedupMultiIndex *multi_idx,
-                           const char *iface,
-                           int ifindex,
-                           const struct in6_addr *ll_addr,
-                           const char *uuid,
-                           guint32 route_table,
-                           guint32 route_metric,
-                           gboolean send_hostname,
-                           const char *dhcp_hostname,
-                           NMDhcpHostnameFlags hostname_flags,
-                           const char *mud_url,
-                           GBytes *duid,
-                           gboolean enforce_duid,
-                           guint32 iaid,
-                           gboolean iaid_explicit,
-                           guint32 timeout,
-                           const char *dhcp_anycast_addr,
-                           gboolean info_only,
-                           NMSettingIP6ConfigPrivacy privacy,
-                           guint needed_prefixes,
-                           GError **error)
+nm_dhcp_manager_start_ip6(NMDhcpManager *           self,
+                          NMDedupMultiIndex *       multi_idx,
+                          const char *              iface,
+                          int                       ifindex,
+                          const struct in6_addr *   ll_addr,
+                          const char *              uuid,
+                          guint32                   route_table,
+                          guint32                   route_metric,
+                          gboolean                  send_hostname,
+                          const char *              dhcp_hostname,
+                          NMDhcpHostnameFlags       hostname_flags,
+                          const char *              mud_url,
+                          GBytes *                  duid,
+                          gboolean                  enforce_duid,
+                          guint32                   iaid,
+                          gboolean                  iaid_explicit,
+                          guint32                   timeout,
+                          const char *              dhcp_anycast_addr,
+                          gboolean                  info_only,
+                          NMSettingIP6ConfigPrivacy privacy,
+                          guint                     needed_prefixes,
+                          GError **                 error)
 {
-	NMDhcpManagerPrivate *priv;
-	const char *hostname = NULL;
-
-	g_return_val_if_fail (NM_IS_DHCP_MANAGER (self), NULL);
-	priv = NM_DHCP_MANAGER_GET_PRIVATE (self);
-
-	if (send_hostname) {
-		/* Always prefer the explicit dhcp-hostname if given */
-		hostname = dhcp_hostname ?: priv->default_hostname;
-	}
-	return client_start (self,
-	                     AF_INET6,
-	                     multi_idx,
-	                     iface,
-	                     ifindex,
-	                     NULL,
-	                     NULL,
-	                     uuid,
-	                     route_table,
-	                     route_metric,
-	                     ll_addr,
-	                     duid,
-	                     enforce_duid,
-	                     iaid,
-	                     iaid_explicit,
-	                     timeout,
-	                     dhcp_anycast_addr,
-	                     hostname,
-	                     TRUE,
-	                     hostname_flags,
-	                     mud_url,
-	                     info_only,
-	                     privacy,
-	                     NULL,
-	                     needed_prefixes,
-	                     error);
+    NMDhcpManagerPrivate *priv;
+    const char *          hostname = NULL;
+
+    g_return_val_if_fail(NM_IS_DHCP_MANAGER(self), NULL);
+    priv = NM_DHCP_MANAGER_GET_PRIVATE(self);
+
+    if (send_hostname) {
+        /* Always prefer the explicit dhcp-hostname if given */
+        hostname = dhcp_hostname ?: priv->default_hostname;
+    }
+    return client_start(self,
+                        AF_INET6,
+                        multi_idx,
+                        iface,
+                        ifindex,
+                        NULL,
+                        NULL,
+                        uuid,
+                        route_table,
+                        route_metric,
+                        ll_addr,
+                        duid,
+                        enforce_duid,
+                        iaid,
+                        iaid_explicit,
+                        timeout,
+                        dhcp_anycast_addr,
+                        hostname,
+                        TRUE,
+                        hostname_flags,
+                        mud_url,
+                        info_only,
+                        privacy,
+                        NULL,
+                        needed_prefixes,
+                        NULL,
+                        NULL,
+                        error);
 }
 
 void
-nm_dhcp_manager_set_default_hostname (NMDhcpManager *manager, const char *hostname)
+nm_dhcp_manager_set_default_hostname(NMDhcpManager *manager, const char *hostname)
 {
-	NMDhcpManagerPrivate *priv = NM_DHCP_MANAGER_GET_PRIVATE (manager);
+    NMDhcpManagerPrivate *priv = NM_DHCP_MANAGER_GET_PRIVATE(manager);
 
-	nm_clear_g_free (&priv->default_hostname);
+    nm_clear_g_free(&priv->default_hostname);
 
-	/* Never send 'localhost'-type names to the DHCP server */
-	if (!nm_utils_is_specific_hostname (hostname))
-		return;
+    /* Never send 'localhost'-type names to the DHCP server */
+    if (!nm_utils_is_specific_hostname(hostname))
+        return;
 
-	priv->default_hostname = g_strdup (hostname);
+    priv->default_hostname = g_strdup(hostname);
 }
 
 const char *
-nm_dhcp_manager_get_config (NMDhcpManager *self)
+nm_dhcp_manager_get_config(NMDhcpManager *self)
 {
-	const NMDhcpClientFactory *factory;
+    const NMDhcpClientFactory *factory;
 
-	g_return_val_if_fail (NM_IS_DHCP_MANAGER (self), NULL);
+    g_return_val_if_fail(NM_IS_DHCP_MANAGER(self), NULL);
 
-	factory = NM_DHCP_MANAGER_GET_PRIVATE (self)->client_factory;
-	return factory ? factory->name : NULL;
+    factory = NM_DHCP_MANAGER_GET_PRIVATE(self)->client_factory;
+    return factory ? factory->name : NULL;
 }
 
 /*****************************************************************************/
 
-NM_DEFINE_SINGLETON_GETTER (NMDhcpManager, nm_dhcp_manager_get, NM_TYPE_DHCP_MANAGER);
+NM_DEFINE_SINGLETON_GETTER(NMDhcpManager, nm_dhcp_manager_get, NM_TYPE_DHCP_MANAGER);
 
 void
-nmtst_dhcp_manager_unget (gpointer self)
+nmtst_dhcp_manager_unget(gpointer self)
 {
-	_nmtst_nm_dhcp_manager_get_reset (self);
+    _nmtst_nm_dhcp_manager_get_reset(self);
 }
 
 static void
-nm_dhcp_manager_init (NMDhcpManager *self)
+nm_dhcp_manager_init(NMDhcpManager *self)
 {
-	NMDhcpManagerPrivate *priv = NM_DHCP_MANAGER_GET_PRIVATE (self);
-	NMConfig *config = nm_config_get ();
-	gs_free char *client_free = NULL;
-	const char *client;
-	int i;
-	const NMDhcpClientFactory *client_factory = NULL;
-
-	c_list_init (&priv->dhcp_client_lst_head);
-
-	for (i = 0; i < G_N_ELEMENTS (_nm_dhcp_manager_factories); i++) {
-		const NMDhcpClientFactory *f = _nm_dhcp_manager_factories[i];
-
-		if (!f)
-			continue;
-
-		nm_log_dbg (LOGD_DHCP, "dhcp-init: enabled DHCP client '%s'%s%s",
-		            f->name,
-		            _client_factory_available (f) ? "" : " (not available)",
-		            f->experimental ? " (undocumented internal plugin)" : "");
-	}
-
-	/* Client-specific setup */
-	client_free = nm_config_data_get_value (nm_config_get_data_orig (config),
-	                                        NM_CONFIG_KEYFILE_GROUP_MAIN,
-	                                        NM_CONFIG_KEYFILE_KEY_MAIN_DHCP,
-	                                        NM_CONFIG_GET_VALUE_STRIP | NM_CONFIG_GET_VALUE_NO_EMPTY);
-	client = client_free;
-	if (nm_config_get_configure_and_quit (config) == NM_CONFIG_CONFIGURE_AND_QUIT_ENABLED) {
-		client_factory = &_nm_dhcp_client_factory_internal;
-		if (client && !nm_streq (client, client_factory->name))
-			nm_log_info (LOGD_DHCP, "dhcp-init: Using internal DHCP client since configure-and-quit is set.");
-	} else {
-		if (client) {
-			client_factory = _client_factory_available (_client_factory_find_by_name (client));
-			if (!client_factory)
-				nm_log_warn (LOGD_DHCP, "dhcp-init: DHCP client '%s' not available", client);
-		}
-		if (!client_factory) {
-			client_factory = _client_factory_find_by_name (""NM_CONFIG_DEFAULT_MAIN_DHCP);
-			if (!client_factory)
-				nm_log_err (LOGD_DHCP, "dhcp-init: default DHCP client '%s' is not installed", NM_CONFIG_DEFAULT_MAIN_DHCP);
-			else {
-				client_factory = _client_factory_available (client_factory);
-				if (!client_factory)
-					nm_log_info (LOGD_DHCP, "dhcp-init: default DHCP client '%s' is not available", NM_CONFIG_DEFAULT_MAIN_DHCP);
-			}
-		}
-		if (!client_factory) {
-			for (i = 0; i < G_N_ELEMENTS (_nm_dhcp_manager_factories); i++) {
-				client_factory = _client_factory_available (_nm_dhcp_manager_factories[i]);
-				if (client_factory)
-					break;
-			}
-		}
-	}
-
-	g_return_if_fail (client_factory);
-
-	nm_log_info (LOGD_DHCP, "dhcp-init: Using DHCP client '%s'", client_factory->name);
-
-	/* NOTE: currently the DHCP plugin is chosen once at start. It's not
-	 * possible to reload that configuration. If that ever becomes possible,
-	 * beware that the "dhcp-plugin" device spec made decisions based on
-	 * the previous plugin and may need reevaluation. */
-	priv->client_factory = client_factory;
+    NMDhcpManagerPrivate *     priv        = NM_DHCP_MANAGER_GET_PRIVATE(self);
+    NMConfig *                 config      = nm_config_get();
+    gs_free char *             client_free = NULL;
+    const char *               client;
+    int                        i;
+    const NMDhcpClientFactory *client_factory = NULL;
+
+    c_list_init(&priv->dhcp_client_lst_head);
+
+    for (i = 0; i < G_N_ELEMENTS(_nm_dhcp_manager_factories); i++) {
+        const NMDhcpClientFactory *f = _nm_dhcp_manager_factories[i];
+
+        if (!f)
+            continue;
+
+        nm_log_dbg(LOGD_DHCP,
+                   "dhcp-init: enabled DHCP client '%s'%s%s",
+                   f->name,
+                   _client_factory_available(f) ? "" : " (not available)",
+                   f->experimental ? " (undocumented internal plugin)" : "");
+    }
+
+    /* Client-specific setup */
+    client_free =
+        nm_config_data_get_value(nm_config_get_data_orig(config),
+                                 NM_CONFIG_KEYFILE_GROUP_MAIN,
+                                 NM_CONFIG_KEYFILE_KEY_MAIN_DHCP,
+                                 NM_CONFIG_GET_VALUE_STRIP | NM_CONFIG_GET_VALUE_NO_EMPTY);
+    client = client_free;
+    if (nm_config_get_configure_and_quit(config) == NM_CONFIG_CONFIGURE_AND_QUIT_ENABLED) {
+        client_factory = &_nm_dhcp_client_factory_internal;
+        if (client && !nm_streq(client, client_factory->name))
+            nm_log_info(LOGD_DHCP,
+                        "dhcp-init: Using internal DHCP client since configure-and-quit is set.");
+    } else {
+        if (client) {
+            client_factory = _client_factory_available(_client_factory_find_by_name(client));
+            if (!client_factory)
+                nm_log_warn(LOGD_DHCP, "dhcp-init: DHCP client '%s' not available", client);
+        }
+        if (!client_factory) {
+            client_factory = _client_factory_find_by_name("" NM_CONFIG_DEFAULT_MAIN_DHCP);
+            if (!client_factory)
+                nm_log_err(LOGD_DHCP,
+                           "dhcp-init: default DHCP client '%s' is not installed",
+                           NM_CONFIG_DEFAULT_MAIN_DHCP);
+            else {
+                client_factory = _client_factory_available(client_factory);
+                if (!client_factory)
+                    nm_log_info(LOGD_DHCP,
+                                "dhcp-init: default DHCP client '%s' is not available",
+                                NM_CONFIG_DEFAULT_MAIN_DHCP);
+            }
+        }
+        if (!client_factory) {
+            for (i = 0; i < G_N_ELEMENTS(_nm_dhcp_manager_factories); i++) {
+                client_factory = _client_factory_available(_nm_dhcp_manager_factories[i]);
+                if (client_factory)
+                    break;
+            }
+        }
+    }
+
+    g_return_if_fail(client_factory);
+
+    nm_log_info(LOGD_DHCP, "dhcp-init: Using DHCP client '%s'", client_factory->name);
+
+    /* NOTE: currently the DHCP plugin is chosen once at start. It's not
+     * possible to reload that configuration. If that ever becomes possible,
+     * beware that the "dhcp-plugin" device spec made decisions based on
+     * the previous plugin and may need reevaluation. */
+    priv->client_factory = client_factory;
 }
 
 static void
-dispose (GObject *object)
+dispose(GObject *object)
 {
-	NMDhcpManager *self = NM_DHCP_MANAGER (object);
-	NMDhcpManagerPrivate *priv = NM_DHCP_MANAGER_GET_PRIVATE (self);
-	NMDhcpClient *client, *client_safe;
+    NMDhcpManager *       self = NM_DHCP_MANAGER(object);
+    NMDhcpManagerPrivate *priv = NM_DHCP_MANAGER_GET_PRIVATE(self);
+    NMDhcpClient *        client, *client_safe;
 
-	c_list_for_each_entry_safe (client, client_safe, &priv->dhcp_client_lst_head, dhcp_client_lst)
-		remove_client_unref (self, client);
+    c_list_for_each_entry_safe (client, client_safe, &priv->dhcp_client_lst_head, dhcp_client_lst)
+        remove_client_unref(self, client);
 
-	G_OBJECT_CLASS (nm_dhcp_manager_parent_class)->dispose (object);
+    G_OBJECT_CLASS(nm_dhcp_manager_parent_class)->dispose(object);
 
-	nm_clear_g_free (&priv->default_hostname);
+    nm_clear_g_free(&priv->default_hostname);
 }
 
 static void
-nm_dhcp_manager_class_init (NMDhcpManagerClass *manager_class)
+nm_dhcp_manager_class_init(NMDhcpManagerClass *manager_class)
 {
-	GObjectClass *object_class = G_OBJECT_CLASS (manager_class);
+    GObjectClass *object_class = G_OBJECT_CLASS(manager_class);
 
-	object_class->dispose = dispose;
+    object_class->dispose = dispose;
 }
diff --git a/src/dhcp/nm-dhcp-manager.h b/src/dhcp/nm-dhcp-manager.h
index e8e65ef3..729d6d4e 100644
--- a/src/dhcp/nm-dhcp-manager.h
+++ b/src/dhcp/nm-dhcp-manager.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2005 - 2010 Red Hat, Inc.
  * Copyright (C) 2006 - 2008 Novell, Inc.
@@ -11,73 +11,77 @@
 #include "nm-ip4-config.h"
 #include "nm-dhcp-config.h"
 
-#define NM_TYPE_DHCP_MANAGER            (nm_dhcp_manager_get_type ())
-#define NM_DHCP_MANAGER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_DHCP_MANAGER, NMDhcpManager))
-#define NM_DHCP_MANAGER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_DHCP_MANAGER, NMDhcpManagerClass))
-#define NM_IS_DHCP_MANAGER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_DHCP_MANAGER))
-#define NM_IS_DHCP_MANAGER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_DHCP_MANAGER))
-#define NM_DHCP_MANAGER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_DHCP_MANAGER, NMDhcpManagerClass))
+#define NM_TYPE_DHCP_MANAGER (nm_dhcp_manager_get_type())
+#define NM_DHCP_MANAGER(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_DHCP_MANAGER, NMDhcpManager))
+#define NM_DHCP_MANAGER_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), NM_TYPE_DHCP_MANAGER, NMDhcpManagerClass))
+#define NM_IS_DHCP_MANAGER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_DHCP_MANAGER))
+#define NM_IS_DHCP_MANAGER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), NM_TYPE_DHCP_MANAGER))
+#define NM_DHCP_MANAGER_GET_CLASS(obj) \
+    (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_DHCP_MANAGER, NMDhcpManagerClass))
 
-typedef struct _NMDhcpManager NMDhcpManager;
+typedef struct _NMDhcpManager      NMDhcpManager;
 typedef struct _NMDhcpManagerClass NMDhcpManagerClass;
 
-GType nm_dhcp_manager_get_type (void);
+GType nm_dhcp_manager_get_type(void);
 
-NMDhcpManager *nm_dhcp_manager_get (void);
+NMDhcpManager *nm_dhcp_manager_get(void);
 
-const char *nm_dhcp_manager_get_config (NMDhcpManager *self);
+const char *nm_dhcp_manager_get_config(NMDhcpManager *self);
 
-void           nm_dhcp_manager_set_default_hostname (NMDhcpManager *manager,
-                                                     const char *hostname);
+void nm_dhcp_manager_set_default_hostname(NMDhcpManager *manager, const char *hostname);
 
-NMDhcpClient * nm_dhcp_manager_start_ip4     (NMDhcpManager *manager,
-                                              struct _NMDedupMultiIndex *multi_idx,
-                                              const char *iface,
-                                              int ifindex,
-                                              GBytes *hwaddr,
-                                              GBytes *bcast_hwaddr,
-                                              const char *uuid,
-                                              guint32 route_table,
-                                              guint32 route_metric,
-                                              gboolean send_hostname,
-                                              const char *dhcp_hostname,
-                                              const char *dhcp_fqdn,
-                                              NMDhcpHostnameFlags hostname_flags,
-                                              const char *mud_url,
-                                              GBytes *dhcp_client_id,
-                                              guint32 timeout,
-                                              const char *dhcp_anycast_addr,
-                                              const char *last_ip_address,
-                                              GError **error);
+NMDhcpClient *nm_dhcp_manager_start_ip4(NMDhcpManager *            manager,
+                                        struct _NMDedupMultiIndex *multi_idx,
+                                        const char *               iface,
+                                        int                        ifindex,
+                                        GBytes *                   hwaddr,
+                                        GBytes *                   bcast_hwaddr,
+                                        const char *               uuid,
+                                        guint32                    route_table,
+                                        guint32                    route_metric,
+                                        gboolean                   send_hostname,
+                                        const char *               dhcp_hostname,
+                                        const char *               dhcp_fqdn,
+                                        NMDhcpHostnameFlags        hostname_flags,
+                                        const char *               mud_url,
+                                        GBytes *                   dhcp_client_id,
+                                        guint32                    timeout,
+                                        const char *               dhcp_anycast_addr,
+                                        const char *               last_ip_address,
+                                        GBytes *                   vendor_class_identifier,
+                                        const char *const *        reject_servers,
+                                        GError **                  error);
 
-NMDhcpClient * nm_dhcp_manager_start_ip6     (NMDhcpManager *manager,
-                                              struct _NMDedupMultiIndex *multi_idx,
-                                              const char *iface,
-                                              int ifindex,
-                                              const struct in6_addr *ll_addr,
-                                              const char *uuid,
-                                              guint32 route_table,
-                                              guint32 route_metric,
-                                              gboolean send_hostname,
-                                              const char *dhcp_hostname,
-                                              NMDhcpHostnameFlags hostname_flags,
-                                              const char *mud_url,
-                                              GBytes *duid,
-                                              gboolean enforce_duid,
-                                              guint32 iaid,
-                                              gboolean iaid_explicit,
-                                              guint32 timeout,
-                                              const char *dhcp_anycast_addr,
-                                              gboolean info_only,
-                                              NMSettingIP6ConfigPrivacy privacy,
-                                              guint needed_prefixes,
-                                              GError **error);
+NMDhcpClient *nm_dhcp_manager_start_ip6(NMDhcpManager *            manager,
+                                        struct _NMDedupMultiIndex *multi_idx,
+                                        const char *               iface,
+                                        int                        ifindex,
+                                        const struct in6_addr *    ll_addr,
+                                        const char *               uuid,
+                                        guint32                    route_table,
+                                        guint32                    route_metric,
+                                        gboolean                   send_hostname,
+                                        const char *               dhcp_hostname,
+                                        NMDhcpHostnameFlags        hostname_flags,
+                                        const char *               mud_url,
+                                        GBytes *                   duid,
+                                        gboolean                   enforce_duid,
+                                        guint32                    iaid,
+                                        gboolean                   iaid_explicit,
+                                        guint32                    timeout,
+                                        const char *               dhcp_anycast_addr,
+                                        gboolean                   info_only,
+                                        NMSettingIP6ConfigPrivacy  privacy,
+                                        guint                      needed_prefixes,
+                                        GError **                  error);
 
 /* For testing only */
-extern const char* nm_dhcp_helper_path;
+extern const char *nm_dhcp_helper_path;
 
 extern const NMDhcpClientFactory *const _nm_dhcp_manager_factories[6];
 
-void nmtst_dhcp_manager_unget (gpointer singleton_instance);
+void nmtst_dhcp_manager_unget(gpointer singleton_instance);
 
 #endif /* __NETWORKMANAGER_DHCP_MANAGER_H__ */
diff --git a/src/dhcp/nm-dhcp-nettools.c b/src/dhcp/nm-dhcp-nettools.c
index fe6a4582..7b4e4605 100644
--- a/src/dhcp/nm-dhcp-nettools.c
+++ b/src/dhcp/nm-dhcp-nettools.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-2.1+
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /*
  * Copyright (C) 2014 - 2019 Red Hat, Inc.
  */
@@ -14,7 +14,6 @@
 #include <net/if_arp.h>
 
 #include "nm-sd-adapt-shared.h"
-#include "hostname-util.h"
 
 #include "nm-glib-aux/nm-dedup-multi.h"
 #include "nm-std-aux/unaligned.h"
@@ -33,51 +32,55 @@
 
 /*****************************************************************************/
 
-#define NM_TYPE_DHCP_NETTOOLS            (nm_dhcp_nettools_get_type ())
-#define NM_DHCP_NETTOOLS(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_DHCP_NETTOOLS, NMDhcpNettools))
-#define NM_DHCP_NETTOOLS_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_DHCP_NETTOOLS, NMDhcpNettoolsClass))
-#define NM_IS_DHCP_NETTOOLS(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_DHCP_NETTOOLS))
-#define NM_IS_DHCP_NETTOOLS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_DHCP_NETTOOLS))
-#define NM_DHCP_NETTOOLS_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_DHCP_NETTOOLS, NMDhcpNettoolsClass))
-
-typedef struct _NMDhcpNettools NMDhcpNettools;
+#define NM_TYPE_DHCP_NETTOOLS (nm_dhcp_nettools_get_type())
+#define NM_DHCP_NETTOOLS(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_DHCP_NETTOOLS, NMDhcpNettools))
+#define NM_DHCP_NETTOOLS_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), NM_TYPE_DHCP_NETTOOLS, NMDhcpNettoolsClass))
+#define NM_IS_DHCP_NETTOOLS(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_DHCP_NETTOOLS))
+#define NM_IS_DHCP_NETTOOLS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), NM_TYPE_DHCP_NETTOOLS))
+#define NM_DHCP_NETTOOLS_GET_CLASS(obj) \
+    (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_DHCP_NETTOOLS, NMDhcpNettoolsClass))
+
+typedef struct _NMDhcpNettools      NMDhcpNettools;
 typedef struct _NMDhcpNettoolsClass NMDhcpNettoolsClass;
 
 /*****************************************************************************/
 
 typedef struct {
-	NDhcp4Client *client;
-	NDhcp4ClientProbe *probe;
-	NDhcp4ClientLease *lease;
-	GSource *event_source;
-	char *lease_file;
+    NDhcp4Client *     client;
+    NDhcp4ClientProbe *probe;
+    NDhcp4ClientLease *lease;
+    GSource *          event_source;
+    char *             lease_file;
 } NMDhcpNettoolsPrivate;
 
 struct _NMDhcpNettools {
-	NMDhcpClient parent;
-	NMDhcpNettoolsPrivate _priv;
+    NMDhcpClient          parent;
+    NMDhcpNettoolsPrivate _priv;
 };
 
 struct _NMDhcpNettoolsClass {
-	NMDhcpClientClass parent;
+    NMDhcpClientClass parent;
 };
 
-G_DEFINE_TYPE (NMDhcpNettools, nm_dhcp_nettools, NM_TYPE_DHCP_CLIENT)
+G_DEFINE_TYPE(NMDhcpNettools, nm_dhcp_nettools, NM_TYPE_DHCP_CLIENT)
 
-#define NM_DHCP_NETTOOLS_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDhcpNettools, NM_IS_DHCP_NETTOOLS)
+#define NM_DHCP_NETTOOLS_GET_PRIVATE(self) \
+    _NM_GET_PRIVATE(self, NMDhcpNettools, NM_IS_DHCP_NETTOOLS)
 
 /*****************************************************************************/
 
 static void
-set_error_nettools (GError **error, int r, const char *message)
+set_error_nettools(GError **error, int r, const char *message)
 {
-	/* the error code returned from n_dhcp4_* API is either a negative
-	 * errno, or a positive internal error code. Generate different messages
-	 * for these. */
-	if (r < 0)
-		nm_utils_error_set_errno (error, r, "%s: %s", message);
-	else
-		nm_utils_error_set (error, r, "%s (code %d)", message, r);
+    /* the error code returned from n_dhcp4_* API is either a negative
+     * errno, or a positive internal error code. Generate different messages
+     * for these. */
+    if (r < 0)
+        nm_utils_error_set_errno(error, r, "%s: %s", message);
+    else
+        nm_utils_error_set(error, r, "%s (code %d)", message, r);
 }
 
 /*****************************************************************************/
@@ -85,1398 +88,1446 @@ set_error_nettools (GError **error, int r, const char *message)
 #define DHCP_MAX_FQDN_LENGTH 255
 
 enum {
-	NM_IN_ADDR_CLASS_A,
-	NM_IN_ADDR_CLASS_B,
-	NM_IN_ADDR_CLASS_C,
-	NM_IN_ADDR_CLASS_INVALID,
+    NM_IN_ADDR_CLASS_A,
+    NM_IN_ADDR_CLASS_B,
+    NM_IN_ADDR_CLASS_C,
+    NM_IN_ADDR_CLASS_INVALID,
 };
 
 static int
-in_addr_class (struct in_addr addr)
+in_addr_class(struct in_addr addr)
 {
-	switch (ntohl (addr.s_addr) >> 24) {
-	case   0 ... 127:
-		return NM_IN_ADDR_CLASS_A;
-	case 128 ... 191:
-		return NM_IN_ADDR_CLASS_B;
-	case 192 ... 223:
-		return NM_IN_ADDR_CLASS_C;
-	default:
-		return NM_IN_ADDR_CLASS_INVALID;
-	}
+    switch (ntohl(addr.s_addr) >> 24) {
+    case 0 ... 127:
+        return NM_IN_ADDR_CLASS_A;
+    case 128 ... 191:
+        return NM_IN_ADDR_CLASS_B;
+    case 192 ... 223:
+        return NM_IN_ADDR_CLASS_C;
+    default:
+        return NM_IN_ADDR_CLASS_INVALID;
+    }
 }
 
 static gboolean
-lease_option_consume (void *out,
-                      size_t n_out,
-                      uint8_t **datap,
-                      size_t *n_datap)
+lease_option_consume(void *out, size_t n_out, uint8_t **datap, size_t *n_datap)
 {
-	if (*n_datap < n_out)
-		return FALSE;
+    if (*n_datap < n_out)
+        return FALSE;
 
-	memcpy (out, *datap, n_out);
-	*datap += n_out;
-	*n_datap -= n_out;
-	return TRUE;
+    memcpy(out, *datap, n_out);
+    *datap += n_out;
+    *n_datap -= n_out;
+    return TRUE;
 }
 
 static gboolean
-lease_option_next_in_addr (struct in_addr *addrp,
-                           uint8_t **datap,
-                           size_t *n_datap)
+lease_option_next_in_addr(struct in_addr *addrp, uint8_t **datap, size_t *n_datap)
 {
-	return lease_option_consume (addrp, sizeof (struct in_addr), datap, n_datap);
+    return lease_option_consume(addrp, sizeof(struct in_addr), datap, n_datap);
 }
 
 static gboolean
-lease_option_next_route (struct in_addr *destp,
-                         uint8_t *plenp,
-                         struct in_addr *gatewayp,
-                         gboolean classless,
-                         uint8_t **datap,
-                         size_t *n_datap)
+lease_option_next_route(struct in_addr *destp,
+                        uint8_t *       plenp,
+                        struct in_addr *gatewayp,
+                        gboolean        classless,
+                        uint8_t **      datap,
+                        size_t *        n_datap)
 {
-	struct in_addr dest = {}, gateway;
-	uint8_t *data = *datap;
-	size_t n_data = *n_datap;
-	uint8_t plen;
-	uint8_t bytes;
-
-	if (classless) {
-		if (!lease_option_consume (&plen, sizeof (plen), &data, &n_data))
-			return FALSE;
-
-		if (plen > 32)
-			return FALSE;
-
-		bytes = plen == 0 ? 0 : ((plen - 1) / 8) + 1;
-
-		if (!lease_option_consume (&dest, bytes, &data, &n_data))
-			return FALSE;
-	} else {
-		if (!lease_option_next_in_addr (&dest, &data, &n_data))
-			return FALSE;
-
-		switch (in_addr_class (dest)) {
-		case NM_IN_ADDR_CLASS_A:
-			plen = 8;
-			break;
-		case NM_IN_ADDR_CLASS_B:
-			plen = 16;
-			break;
-		case NM_IN_ADDR_CLASS_C:
-			plen = 24;
-			break;
-		case NM_IN_ADDR_CLASS_INVALID:
-			return FALSE;
-		}
-	}
-
-	dest.s_addr = nm_utils_ip4_address_clear_host_address (dest.s_addr, plen);
-
-	if (!lease_option_next_in_addr (&gateway, &data, &n_data))
-		return FALSE;
-
-	*destp = dest;
-	*plenp = plen;
-	*gatewayp = gateway;
-	*datap = data;
-	*n_datap = n_data;
-	return TRUE;
+    struct in_addr dest   = {}, gateway;
+    uint8_t *      data   = *datap;
+    size_t         n_data = *n_datap;
+    uint8_t        plen;
+    uint8_t        bytes;
+
+    if (classless) {
+        if (!lease_option_consume(&plen, sizeof(plen), &data, &n_data))
+            return FALSE;
+
+        if (plen > 32)
+            return FALSE;
+
+        bytes = plen == 0 ? 0 : ((plen - 1) / 8) + 1;
+
+        if (!lease_option_consume(&dest, bytes, &data, &n_data))
+            return FALSE;
+    } else {
+        if (!lease_option_next_in_addr(&dest, &data, &n_data))
+            return FALSE;
+
+        switch (in_addr_class(dest)) {
+        case NM_IN_ADDR_CLASS_A:
+            plen = 8;
+            break;
+        case NM_IN_ADDR_CLASS_B:
+            plen = 16;
+            break;
+        case NM_IN_ADDR_CLASS_C:
+            plen = 24;
+            break;
+        case NM_IN_ADDR_CLASS_INVALID:
+            return FALSE;
+        }
+    }
+
+    dest.s_addr = nm_utils_ip4_address_clear_host_address(dest.s_addr, plen);
+
+    if (!lease_option_next_in_addr(&gateway, &data, &n_data))
+        return FALSE;
+
+    *destp    = dest;
+    *plenp    = plen;
+    *gatewayp = gateway;
+    *datap    = data;
+    *n_datap  = n_data;
+    return TRUE;
 }
 
 static gboolean
-lease_option_print_label (GString *str, size_t n_label, uint8_t **datap, size_t *n_datap)
+lease_option_print_label(GString *str, size_t n_label, uint8_t **datap, size_t *n_datap)
 {
-	for (size_t i = 0; i < n_label; ++i) {
-		uint8_t c;
-
-		if (!lease_option_consume(&c, sizeof (c), datap, n_datap))
-			return FALSE;
-
-		switch (c) {
-                case 'a' ... 'z':
-                case 'A' ... 'Z':
-		case '0' ... '9':
-                case '-':
-		case '_':
-			g_string_append_c(str, c);
-			break;
-		case '.':
-		case '\\':
-			g_string_append_printf(str, "\\%c", c);
-			break;
-		default:
-			g_string_append_printf(str, "\\%3d", c);
-		}
-	}
-
-	return TRUE;
+    for (size_t i = 0; i < n_label; ++i) {
+        uint8_t c;
+
+        if (!lease_option_consume(&c, sizeof(c), datap, n_datap))
+            return FALSE;
+
+        switch (c) {
+        case 'a' ... 'z':
+        case 'A' ... 'Z':
+        case '0' ... '9':
+        case '-':
+        case '_':
+            g_string_append_c(str, c);
+            break;
+        case '.':
+        case '\\':
+            g_string_append_printf(str, "\\%c", c);
+            break;
+        default:
+            g_string_append_printf(str, "\\%3d", c);
+        }
+    }
+
+    return TRUE;
 }
 
 static gboolean
-lease_option_print_domain_name (GString *str, uint8_t *cache, size_t *n_cachep, uint8_t **datap, size_t *n_datap)
+lease_option_print_domain_name(GString * str,
+                               uint8_t * cache,
+                               size_t *  n_cachep,
+                               uint8_t **datap,
+                               size_t *  n_datap)
 {
-	uint8_t *domain;
-	size_t n_domain, n_cache = *n_cachep;
-	uint8_t **domainp = datap;
-	size_t *n_domainp = n_datap;
-	gboolean first = TRUE;
-	uint8_t c;
-
-	/*
-	 * We are given two adjacent memory regions. The @cache contains alreday parsed
-	 * domain names, and the @datap contains the remaining data to parse.
-	 *
-	 * A domain name is formed from a sequence of labels. Each label start with
-	 * a length byte, where the two most significant bits are unset. A zero-length
-	 * label indicates the end of the domain name.
-	 *
-	 * Alternatively, a label can be followed by an offset (indicated by the two
-	 * most significant bits being set in the next byte that is read). The offset
-	 * is an offset into the cache, where the next label of the domain name can
-	 * be found.
-	 *
-	 * Note, that each time a jump to an offset is performed, the size of the
-	 * cache shrinks, so this is guaranteed to terminate.
-	 */
-	if (cache + n_cache != *datap)
-		return FALSE;
-
-	for (;;) {
-		if (!lease_option_consume(&c, sizeof (c), domainp, n_domainp))
-			return FALSE;
-
-		switch (c & 0xC0) {
-		case 0x00: /* label length */
-		{
-			size_t n_label = c;
-
-			if (n_label == 0) {
-				/*
-				 * We reached the final label of the domain name. Adjust
-				 * the cache to include the consumed data, and return.
-				 */
-				*n_cachep = *datap - cache;
-				return TRUE;
-			}
-
-			if (!first)
-				g_string_append_c(str, '.');
-			else
-				first = FALSE;
-
-			if (!lease_option_print_label (str, n_label, domainp, n_domainp))
-				return FALSE;
-
-			break;
-		}
-		case 0xC0: /* back pointer */
-		{
-			size_t offset = (c & 0x3F) << 16;
-
-			/*
-			 * The offset is given as two bytes (in big endian), where the
-			 * two high bits are masked out.
-			 */
-
-			if (!lease_option_consume (&c, sizeof (c), domainp, n_domainp))
-				return FALSE;
-
-			offset += c;
-
-			if (offset >= n_cache)
-				return FALSE;
-
-			domain = cache + offset;
-			n_domain = n_cache - offset;
-			n_cache = offset;
-
-			domainp = &domain;
-			n_domainp = &n_domain;
-
-			break;
-		}
-		default:
-			return FALSE;
-		}
-	}
+    uint8_t * domain;
+    size_t    n_domain, n_cache = *n_cachep;
+    uint8_t **domainp   = datap;
+    size_t *  n_domainp = n_datap;
+    gboolean  first     = TRUE;
+    uint8_t   c;
+
+    /*
+     * We are given two adjacent memory regions. The @cache contains alreday parsed
+     * domain names, and the @datap contains the remaining data to parse.
+     *
+     * A domain name is formed from a sequence of labels. Each label start with
+     * a length byte, where the two most significant bits are unset. A zero-length
+     * label indicates the end of the domain name.
+     *
+     * Alternatively, a label can be followed by an offset (indicated by the two
+     * most significant bits being set in the next byte that is read). The offset
+     * is an offset into the cache, where the next label of the domain name can
+     * be found.
+     *
+     * Note, that each time a jump to an offset is performed, the size of the
+     * cache shrinks, so this is guaranteed to terminate.
+     */
+    if (cache + n_cache != *datap)
+        return FALSE;
+
+    for (;;) {
+        if (!lease_option_consume(&c, sizeof(c), domainp, n_domainp))
+            return FALSE;
+
+        switch (c & 0xC0) {
+        case 0x00: /* label length */
+        {
+            size_t n_label = c;
+
+            if (n_label == 0) {
+                /*
+                 * We reached the final label of the domain name. Adjust
+                 * the cache to include the consumed data, and return.
+                 */
+                *n_cachep = *datap - cache;
+                return TRUE;
+            }
+
+            if (!first)
+                g_string_append_c(str, '.');
+            else
+                first = FALSE;
+
+            if (!lease_option_print_label(str, n_label, domainp, n_domainp))
+                return FALSE;
+
+            break;
+        }
+        case 0xC0: /* back pointer */
+        {
+            size_t offset = (c & 0x3F) << 16;
+
+            /*
+             * The offset is given as two bytes (in big endian), where the
+             * two high bits are masked out.
+             */
+
+            if (!lease_option_consume(&c, sizeof(c), domainp, n_domainp))
+                return FALSE;
+
+            offset += c;
+
+            if (offset >= n_cache)
+                return FALSE;
+
+            domain   = cache + offset;
+            n_domain = n_cache - offset;
+            n_cache  = offset;
+
+            domainp   = &domain;
+            n_domainp = &n_domain;
+
+            break;
+        }
+        default:
+            return FALSE;
+        }
+    }
 }
 
 static gboolean
-lease_get_in_addr (NDhcp4ClientLease *lease,
-                   guint8 option,
-                   struct in_addr *addrp) {
-	struct in_addr addr;
-	uint8_t *data;
-	size_t n_data;
-	int r;
-
-	r = n_dhcp4_client_lease_query (lease, option, &data, &n_data);
-	if (r)
-		return FALSE;
-
-	if (!lease_option_next_in_addr (&addr, &data, &n_data))
-		return FALSE;
-
-	if (n_data != 0)
-		return FALSE;
-
-	*addrp = addr;
-	return TRUE;
+lease_get_in_addr(NDhcp4ClientLease *lease, guint8 option, struct in_addr *addrp)
+{
+    struct in_addr addr;
+    uint8_t *      data;
+    size_t         n_data;
+    int            r;
+
+    r = n_dhcp4_client_lease_query(lease, option, &data, &n_data);
+    if (r)
+        return FALSE;
+
+    if (!lease_option_next_in_addr(&addr, &data, &n_data))
+        return FALSE;
+
+    if (n_data != 0)
+        return FALSE;
+
+    *addrp = addr;
+    return TRUE;
 }
 
 static gboolean
-lease_get_u16 (NDhcp4ClientLease *lease,
-               uint8_t option,
-               uint16_t *u16p)
+lease_get_u16(NDhcp4ClientLease *lease, uint8_t option, uint16_t *u16p)
 {
-	uint8_t *data;
-	size_t n_data;
-	uint16_t be16;
-	int r;
+    uint8_t *data;
+    size_t   n_data;
+    uint16_t be16;
+    int      r;
 
-	r = n_dhcp4_client_lease_query (lease, option, &data, &n_data);
-	if (r)
-		return FALSE;
+    r = n_dhcp4_client_lease_query(lease, option, &data, &n_data);
+    if (r)
+        return FALSE;
 
-	if (n_data != sizeof (be16))
-		return FALSE;
+    if (n_data != sizeof(be16))
+        return FALSE;
 
-	memcpy (&be16, data, sizeof (be16));
+    memcpy(&be16, data, sizeof(be16));
 
-	*u16p = ntohs(be16);
-	return TRUE;
+    *u16p = ntohs(be16);
+    return TRUE;
 }
 
 static gboolean
-lease_parse_address (NDhcp4ClientLease *lease,
-                     NMIP4Config *ip4_config,
-                     GHashTable *options,
-                     GError **error)
+lease_parse_address(NDhcp4ClientLease *lease,
+                    NMIP4Config *      ip4_config,
+                    GHashTable *       options,
+                    GError **          error)
 {
-	char addr_str[NM_UTILS_INET_ADDRSTRLEN];
-	struct in_addr a_address;
-	struct in_addr a_netmask;
-	struct in_addr a_next_server;
-	guint32 a_plen;
-	guint64 nettools_lifetime;
-	guint32 a_lifetime;
-	guint32 a_timestamp;
-	guint64 a_expiry;
-
-	n_dhcp4_client_lease_get_yiaddr (lease, &a_address);
-	if (a_address.s_addr == INADDR_ANY) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "could not get address from lease");
-		return FALSE;
-	}
-
-	n_dhcp4_client_lease_get_lifetime (lease, &nettools_lifetime);
-
-	if (nettools_lifetime == G_MAXUINT64) {
-		a_timestamp = 0;
-		a_lifetime = NM_PLATFORM_LIFETIME_PERMANENT;
-		a_expiry = G_MAXUINT64;
-	} else {
-		guint64 nettools_basetime;
-		guint64 lifetime;
-		gint64 ts;
-
-		n_dhcp4_client_lease_get_basetime (lease, &nettools_basetime);
-
-		/* usually we shouldn't assert against external libraries like n-dhcp4.
-		 * Here we still do it... it seems safe enough. */
-		nm_assert (nettools_basetime > 0);
-		nm_assert (nettools_lifetime >= nettools_basetime);
-		nm_assert (((nettools_lifetime - nettools_basetime) % NM_UTILS_NSEC_PER_SEC) == 0);
-		nm_assert ((nettools_lifetime - nettools_basetime) / NM_UTILS_NSEC_PER_SEC <= G_MAXUINT32);
-
-		if (nettools_lifetime <= nettools_basetime) {
-			/* A lease time of 0 is allowed on some dhcp servers, so, let's accept it. */
-			lifetime = 0;
-		} else {
-			lifetime = nettools_lifetime - nettools_basetime;
-
-			/* we "ceil" the value to the next second. In practice, we don't expect any sub-second values
-			 * from n-dhcp4 anyway, so this should have no effect. */
-			lifetime += NM_UTILS_NSEC_PER_SEC - 1;
-		}
-
-		ts = nm_utils_monotonic_timestamp_from_boottime (nettools_basetime, 1);
-
-		/* the timestamp must be positive, because we only started nettools DHCP client
-		 * after obtaining the first monotonic timestamp. Hence, the lease must have been
-		 * received afterwards. */
-		nm_assert (ts >= NM_UTILS_NSEC_PER_SEC);
-
-		a_timestamp = ts / NM_UTILS_NSEC_PER_SEC;
-		a_lifetime = NM_MIN (lifetime / NM_UTILS_NSEC_PER_SEC, NM_PLATFORM_LIFETIME_PERMANENT - 1);
-		a_expiry = time (NULL) + ((lifetime - (nm_utils_clock_gettime_nsec (CLOCK_BOOTTIME) - nettools_basetime)) / NM_UTILS_NSEC_PER_SEC);
-	}
-
-	if (!lease_get_in_addr (lease, NM_DHCP_OPTION_DHCP4_SUBNET_MASK, &a_netmask)) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "could not get netmask from lease");
-		return FALSE;
-	}
-
-	_nm_utils_inet4_ntop (a_address.s_addr, addr_str);
-	a_plen = nm_utils_ip4_netmask_to_prefix (a_netmask.s_addr);
-
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_NM_IP_ADDRESS,
-	                           addr_str);
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_SUBNET_MASK,
-	                           _nm_utils_inet4_ntop (a_netmask.s_addr, addr_str));
-
-	nm_dhcp_option_add_option_u64 (options,
-	                               _nm_dhcp_option_dhcp4_options,
-	                               NM_DHCP_OPTION_DHCP4_IP_ADDRESS_LEASE_TIME,
-	                               (guint64) a_lifetime);
-
-	if (a_expiry != G_MAXUINT64) {
-		nm_dhcp_option_add_option_u64 (options,
-		                               _nm_dhcp_option_dhcp4_options,
-		                               NM_DHCP_OPTION_DHCP4_NM_EXPIRY,
-		                               a_expiry);
-	}
-
-
-	n_dhcp4_client_lease_get_siaddr (lease, &a_next_server);
-	if (a_next_server.s_addr != INADDR_ANY) {
-		_nm_utils_inet4_ntop (a_next_server.s_addr, addr_str);
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_NM_NEXT_SERVER,
-		                           addr_str);
-	}
-
-	nm_ip4_config_add_address (ip4_config,
-	                           &((const NMPlatformIP4Address) {
-	                                   .address      = a_address.s_addr,
-	                                   .peer_address = a_address.s_addr,
-	                                   .plen         = a_plen,
-	                                   .addr_source  = NM_IP_CONFIG_SOURCE_DHCP,
-	                                   .timestamp    = a_timestamp,
-	                                   .lifetime     = a_lifetime,
-	                                   .preferred    = a_lifetime,
-	                           }));
-
-	return TRUE;
+    char           addr_str[NM_UTILS_INET_ADDRSTRLEN];
+    struct in_addr a_address;
+    struct in_addr a_netmask;
+    struct in_addr a_next_server;
+    guint32        a_plen;
+    guint64        nettools_lifetime;
+    guint32        a_lifetime;
+    guint32        a_timestamp;
+    guint64        a_expiry;
+
+    n_dhcp4_client_lease_get_yiaddr(lease, &a_address);
+    if (a_address.s_addr == INADDR_ANY) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_UNKNOWN,
+                                   "could not get address from lease");
+        return FALSE;
+    }
+
+    n_dhcp4_client_lease_get_lifetime(lease, &nettools_lifetime);
+
+    if (nettools_lifetime == G_MAXUINT64) {
+        a_timestamp = 0;
+        a_lifetime  = NM_PLATFORM_LIFETIME_PERMANENT;
+        a_expiry    = G_MAXUINT64;
+    } else {
+        guint64 nettools_basetime;
+        guint64 lifetime;
+        gint64  ts;
+
+        n_dhcp4_client_lease_get_basetime(lease, &nettools_basetime);
+
+        /* usually we shouldn't assert against external libraries like n-dhcp4.
+         * Here we still do it... it seems safe enough. */
+        nm_assert(nettools_basetime > 0);
+        nm_assert(nettools_lifetime >= nettools_basetime);
+        nm_assert(((nettools_lifetime - nettools_basetime) % NM_UTILS_NSEC_PER_SEC) == 0);
+        nm_assert((nettools_lifetime - nettools_basetime) / NM_UTILS_NSEC_PER_SEC <= G_MAXUINT32);
+
+        if (nettools_lifetime <= nettools_basetime) {
+            /* A lease time of 0 is allowed on some dhcp servers, so, let's accept it. */
+            lifetime = 0;
+        } else {
+            lifetime = nettools_lifetime - nettools_basetime;
+
+            /* we "ceil" the value to the next second. In practice, we don't expect any sub-second values
+             * from n-dhcp4 anyway, so this should have no effect. */
+            lifetime += NM_UTILS_NSEC_PER_SEC - 1;
+        }
+
+        ts = nm_utils_monotonic_timestamp_from_boottime(nettools_basetime, 1);
+
+        /* the timestamp must be positive, because we only started nettools DHCP client
+         * after obtaining the first monotonic timestamp. Hence, the lease must have been
+         * received afterwards. */
+        nm_assert(ts >= NM_UTILS_NSEC_PER_SEC);
+
+        a_timestamp = ts / NM_UTILS_NSEC_PER_SEC;
+        a_lifetime  = NM_MIN(lifetime / NM_UTILS_NSEC_PER_SEC, NM_PLATFORM_LIFETIME_PERMANENT - 1);
+        a_expiry    = time(NULL)
+                   + ((lifetime - (nm_utils_clock_gettime_nsec(CLOCK_BOOTTIME) - nettools_basetime))
+                      / NM_UTILS_NSEC_PER_SEC);
+    }
+
+    if (!lease_get_in_addr(lease, NM_DHCP_OPTION_DHCP4_SUBNET_MASK, &a_netmask)) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_UNKNOWN,
+                                   "could not get netmask from lease");
+        return FALSE;
+    }
+
+    _nm_utils_inet4_ntop(a_address.s_addr, addr_str);
+    a_plen = nm_utils_ip4_netmask_to_prefix(a_netmask.s_addr);
+
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_NM_IP_ADDRESS,
+                              addr_str);
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_SUBNET_MASK,
+                              _nm_utils_inet4_ntop(a_netmask.s_addr, addr_str));
+
+    nm_dhcp_option_add_option_u64(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_IP_ADDRESS_LEASE_TIME,
+                                  (guint64) a_lifetime);
+
+    if (a_expiry != G_MAXUINT64) {
+        nm_dhcp_option_add_option_u64(options,
+                                      _nm_dhcp_option_dhcp4_options,
+                                      NM_DHCP_OPTION_DHCP4_NM_EXPIRY,
+                                      a_expiry);
+    }
+
+    n_dhcp4_client_lease_get_siaddr(lease, &a_next_server);
+    if (a_next_server.s_addr != INADDR_ANY) {
+        _nm_utils_inet4_ntop(a_next_server.s_addr, addr_str);
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_NM_NEXT_SERVER,
+                                  addr_str);
+    }
+
+    nm_ip4_config_add_address(ip4_config,
+                              &((const NMPlatformIP4Address){
+                                  .address      = a_address.s_addr,
+                                  .peer_address = a_address.s_addr,
+                                  .plen         = a_plen,
+                                  .addr_source  = NM_IP_CONFIG_SOURCE_DHCP,
+                                  .timestamp    = a_timestamp,
+                                  .lifetime     = a_lifetime,
+                                  .preferred    = a_lifetime,
+                              }));
+
+    return TRUE;
 }
 
 static void
-lease_parse_domain_name_servers (NDhcp4ClientLease *lease,
-                                 NMIP4Config *ip4_config,
-                                 GHashTable *options)
+lease_parse_address_list(NDhcp4ClientLease *      lease,
+                         NMIP4Config *            ip4_config,
+                         NMDhcpOptionDhcp4Options option,
+                         GHashTable *             options)
 {
-	nm_auto_free_gstring GString *str = NULL;
-	char addr_str[NM_UTILS_INET_ADDRSTRLEN];
-	struct in_addr addr;
-	uint8_t *data;
-	size_t n_data;
-	int r;
-
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_DOMAIN_NAME_SERVER, &data, &n_data);
-	if (r)
-		return;
-
-	nm_gstring_prepare (&str);
-
-	while (lease_option_next_in_addr (&addr, &data, &n_data)) {
-
-		_nm_utils_inet4_ntop (addr.s_addr, addr_str);
-		g_string_append (nm_gstring_add_space_delimiter (str), addr_str);
-
-		if (   addr.s_addr == 0
-		    || nm_ip4_addr_is_localhost (addr.s_addr)) {
-			/* Skip localhost addresses, like also networkd does.
-			 * See https://github.com/systemd/systemd/issues/4524. */
-			continue;
-		}
-		nm_ip4_config_add_nameserver (ip4_config, addr.s_addr);
-	}
-
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_DOMAIN_NAME_SERVER,
-	                           str->str);
+    nm_auto_free_gstring GString *str = NULL;
+    char                          addr_str[NM_UTILS_INET_ADDRSTRLEN];
+    struct in_addr                addr;
+    uint8_t *                     data;
+    size_t                        n_data;
+    int                           r;
+
+    r = n_dhcp4_client_lease_query(lease, option, &data, &n_data);
+    if (r)
+        return;
+
+    nm_gstring_prepare(&str);
+
+    while (lease_option_next_in_addr(&addr, &data, &n_data)) {
+        _nm_utils_inet4_ntop(addr.s_addr, addr_str);
+        g_string_append(nm_gstring_add_space_delimiter(str), addr_str);
+
+        switch (option) {
+        case NM_DHCP_OPTION_DHCP4_DOMAIN_NAME_SERVER:
+            if (addr.s_addr == 0 || nm_ip4_addr_is_localhost(addr.s_addr)) {
+                /* Skip localhost addresses, like also networkd does.
+                 * See https://github.com/systemd/systemd/issues/4524. */
+                continue;
+            }
+            nm_ip4_config_add_nameserver(ip4_config, addr.s_addr);
+            break;
+        case NM_DHCP_OPTION_DHCP4_NIS_SERVERS:
+            nm_ip4_config_add_nis_server(ip4_config, addr.s_addr);
+            break;
+        case NM_DHCP_OPTION_DHCP4_NETBIOS_NAMESERVER:
+            nm_ip4_config_add_wins(ip4_config, addr.s_addr);
+            break;
+        default:
+            nm_assert_not_reached();
+        }
+    }
+
+    nm_dhcp_option_add_option(options, _nm_dhcp_option_dhcp4_options, option, str->str);
 }
 
 static void
-lease_parse_routes (NDhcp4ClientLease *lease,
-                    NMIP4Config *ip4_config,
-                    GHashTable *options,
-                    guint32 route_table,
-                    guint32 route_metric)
+lease_parse_routes(NDhcp4ClientLease *lease,
+                   NMIP4Config *      ip4_config,
+                   GHashTable *       options,
+                   guint32            route_table,
+                   guint32            route_metric)
 {
-	nm_auto_free_gstring GString *str = NULL;
-	char dest_str[NM_UTILS_INET_ADDRSTRLEN];
-	char gateway_str[NM_UTILS_INET_ADDRSTRLEN];
-	const char *s;
-	struct in_addr dest, gateway;
-	uint8_t plen;
-	guint32 m;
-	gboolean has_router_from_classless = FALSE, has_classless = FALSE;
-	guint32 default_route_metric = route_metric;
-	uint8_t *data;
-	size_t n_data;
-	int r;
-
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE, &data, &n_data);
-	if (!r) {
-		nm_gstring_prepare (&str);
-
-		has_classless = TRUE;
-
-		while (lease_option_next_route (&dest, &plen, &gateway, TRUE, &data, &n_data)) {
-
-			_nm_utils_inet4_ntop (dest.s_addr, dest_str);
-			_nm_utils_inet4_ntop (gateway.s_addr, gateway_str);
-
-			g_string_append_printf (nm_gstring_add_space_delimiter (str),
-			                        "%s/%d %s",
-			                        dest_str,
-			                        (int) plen,
-			                        gateway_str);
-
-			if (plen == 0) {
-				/* if there are multiple default routes, we add them with differing
-				 * metrics. */
-				m = default_route_metric;
-				if (default_route_metric < G_MAXUINT32)
-					default_route_metric++;
-
-				has_router_from_classless = TRUE;
-			} else {
-				m = route_metric;
-                        }
-
-			nm_ip4_config_add_route (ip4_config,
-			                         &((const NMPlatformIP4Route) {
-			                             .network       = dest.s_addr,
-			                             .plen          = plen,
-			                             .gateway       = gateway.s_addr,
-			                             .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
-			                             .metric        = m,
-			                             .table_coerced = nm_platform_route_table_coerce (route_table),
-			                         }),
-			                         NULL);
-		}
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE,
-		                           str->str);
-	}
-
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_STATIC_ROUTE, &data, &n_data);
-	if (!r) {
-		nm_gstring_prepare (&str);
-
-		while (lease_option_next_route (&dest, &plen, &gateway, FALSE, &data, &n_data)) {
-
-			_nm_utils_inet4_ntop (dest.s_addr, dest_str);
-			_nm_utils_inet4_ntop (gateway.s_addr, gateway_str);
-
-			g_string_append_printf (nm_gstring_add_space_delimiter (str),
-			                        "%s/%d %s",
-			                        dest_str,
-			                        (int) plen,
-			                        gateway_str);
-
-			if (has_classless) {
-				/* RFC 3443: if the DHCP server returns both a Classless Static Routes
-				 * option and a Static Routes option, the DHCP client MUST ignore the
-				 * Static Routes option. */
-				continue;
-			}
-
-			if (plen == 0) {
-				/* for option 33 (static route), RFC 2132 says:
-				 *
-				 * The default route (0.0.0.0) is an illegal destination for a static
-				 * route. */
-				continue;
-			}
-
-			nm_ip4_config_add_route (ip4_config,
-			                         &((const NMPlatformIP4Route) {
-			                             .network       = dest.s_addr,
-			                             .plen          = plen,
-			                             .gateway       = gateway.s_addr,
-			                             .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
-			                             .metric        = route_metric,
-			                             .table_coerced = nm_platform_route_table_coerce (route_table),
-			                         }),
-			                         NULL);
-		}
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_STATIC_ROUTE,
-		                           str->str);
-	}
-
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_ROUTER, &data, &n_data);
-	if (!r) {
-		nm_gstring_prepare (&str);
-
-		while (lease_option_next_in_addr (&gateway, &data, &n_data)) {
-			s = _nm_utils_inet4_ntop (gateway.s_addr, gateway_str);
-			g_string_append (nm_gstring_add_space_delimiter (str), s);
-
-			if (gateway.s_addr == 0) {
-				/* silently skip 0.0.0.0 */
-				continue;
-			}
-
-			if (has_router_from_classless) {
-				/* If the DHCP server returns both a Classless Static Routes option and a
-				 * Router option, the DHCP client MUST ignore the Router option [RFC 3442].
-				 *
-				 * Be more lenient and ignore the Router option only if Classless Static
-				 * Routes contain a default gateway (as other DHCP backends do).
-				 */
-				continue;
-			}
-
-			/* if there are multiple default routes, we add them with differing
-			 * metrics. */
-			m = default_route_metric;
-			if (default_route_metric < G_MAXUINT32)
-				default_route_metric++;
-
-			nm_ip4_config_add_route (ip4_config,
-			                         &((const NMPlatformIP4Route) {
-			                                 .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
-			                                 .gateway       = gateway.s_addr,
-			                                 .table_coerced = nm_platform_route_table_coerce (route_table),
-			                                 .metric        = m,
-			                         }),
-			                         NULL);
-		}
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_ROUTER,
-		                           str->str);
-	}
+    nm_auto_free_gstring GString *str = NULL;
+    char                          dest_str[NM_UTILS_INET_ADDRSTRLEN];
+    char                          gateway_str[NM_UTILS_INET_ADDRSTRLEN];
+    const char *                  s;
+    struct in_addr                dest, gateway;
+    uint8_t                       plen;
+    guint32                       m;
+    gboolean                      has_router_from_classless = FALSE, has_classless = FALSE;
+    guint32                       default_route_metric = route_metric;
+    uint8_t *                     data;
+    size_t                        n_data;
+    int                           r;
+
+    r = n_dhcp4_client_lease_query(lease,
+                                   NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE,
+                                   &data,
+                                   &n_data);
+    if (!r) {
+        nm_gstring_prepare(&str);
+
+        has_classless = TRUE;
+
+        while (lease_option_next_route(&dest, &plen, &gateway, TRUE, &data, &n_data)) {
+            _nm_utils_inet4_ntop(dest.s_addr, dest_str);
+            _nm_utils_inet4_ntop(gateway.s_addr, gateway_str);
+
+            g_string_append_printf(nm_gstring_add_space_delimiter(str),
+                                   "%s/%d %s",
+                                   dest_str,
+                                   (int) plen,
+                                   gateway_str);
+
+            if (plen == 0) {
+                /* if there are multiple default routes, we add them with differing
+                 * metrics. */
+                m = default_route_metric;
+                if (default_route_metric < G_MAXUINT32)
+                    default_route_metric++;
+
+                has_router_from_classless = TRUE;
+            } else {
+                m = route_metric;
+            }
+
+            nm_ip4_config_add_route(
+                ip4_config,
+                &((const NMPlatformIP4Route){
+                    .network       = dest.s_addr,
+                    .plen          = plen,
+                    .gateway       = gateway.s_addr,
+                    .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
+                    .metric        = m,
+                    .table_coerced = nm_platform_route_table_coerce(route_table),
+                }),
+                NULL);
+        }
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE,
+                                  str->str);
+    }
+
+    r = n_dhcp4_client_lease_query(lease, NM_DHCP_OPTION_DHCP4_STATIC_ROUTE, &data, &n_data);
+    if (!r) {
+        nm_gstring_prepare(&str);
+
+        while (lease_option_next_route(&dest, &plen, &gateway, FALSE, &data, &n_data)) {
+            _nm_utils_inet4_ntop(dest.s_addr, dest_str);
+            _nm_utils_inet4_ntop(gateway.s_addr, gateway_str);
+
+            g_string_append_printf(nm_gstring_add_space_delimiter(str),
+                                   "%s/%d %s",
+                                   dest_str,
+                                   (int) plen,
+                                   gateway_str);
+
+            if (has_classless) {
+                /* RFC 3443: if the DHCP server returns both a Classless Static Routes
+                 * option and a Static Routes option, the DHCP client MUST ignore the
+                 * Static Routes option. */
+                continue;
+            }
+
+            if (plen == 0) {
+                /* for option 33 (static route), RFC 2132 says:
+                 *
+                 * The default route (0.0.0.0) is an illegal destination for a static
+                 * route. */
+                continue;
+            }
+
+            nm_ip4_config_add_route(
+                ip4_config,
+                &((const NMPlatformIP4Route){
+                    .network       = dest.s_addr,
+                    .plen          = plen,
+                    .gateway       = gateway.s_addr,
+                    .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
+                    .metric        = route_metric,
+                    .table_coerced = nm_platform_route_table_coerce(route_table),
+                }),
+                NULL);
+        }
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_STATIC_ROUTE,
+                                  str->str);
+    }
+
+    r = n_dhcp4_client_lease_query(lease, NM_DHCP_OPTION_DHCP4_ROUTER, &data, &n_data);
+    if (!r) {
+        nm_gstring_prepare(&str);
+
+        while (lease_option_next_in_addr(&gateway, &data, &n_data)) {
+            s = _nm_utils_inet4_ntop(gateway.s_addr, gateway_str);
+            g_string_append(nm_gstring_add_space_delimiter(str), s);
+
+            if (gateway.s_addr == 0) {
+                /* silently skip 0.0.0.0 */
+                continue;
+            }
+
+            if (has_router_from_classless) {
+                /* If the DHCP server returns both a Classless Static Routes option and a
+                 * Router option, the DHCP client MUST ignore the Router option [RFC 3442].
+                 *
+                 * Be more lenient and ignore the Router option only if Classless Static
+                 * Routes contain a default gateway (as other DHCP backends do).
+                 */
+                continue;
+            }
+
+            /* if there are multiple default routes, we add them with differing
+             * metrics. */
+            m = default_route_metric;
+            if (default_route_metric < G_MAXUINT32)
+                default_route_metric++;
+
+            nm_ip4_config_add_route(
+                ip4_config,
+                &((const NMPlatformIP4Route){
+                    .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
+                    .gateway       = gateway.s_addr,
+                    .table_coerced = nm_platform_route_table_coerce(route_table),
+                    .metric        = m,
+                }),
+                NULL);
+        }
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_ROUTER,
+                                  str->str);
+    }
 }
 
 static void
-lease_parse_mtu (NDhcp4ClientLease *lease,
-                 NMIP4Config *ip4_config,
-                 GHashTable *options)
+lease_parse_mtu(NDhcp4ClientLease *lease, NMIP4Config *ip4_config, GHashTable *options)
 {
-	uint16_t mtu;
+    uint16_t mtu;
 
-	if (!lease_get_u16 (lease, NM_DHCP_OPTION_DHCP4_INTERFACE_MTU, &mtu))
-		return;
+    if (!lease_get_u16(lease, NM_DHCP_OPTION_DHCP4_INTERFACE_MTU, &mtu))
+        return;
 
-	if (mtu < 68)
-		return;
+    if (mtu < 68)
+        return;
 
-	nm_dhcp_option_add_option_u64 (options,
-	                               _nm_dhcp_option_dhcp4_options,
-	                               NM_DHCP_OPTION_DHCP4_INTERFACE_MTU,
-	                               mtu);
-	nm_ip4_config_set_mtu (ip4_config, mtu, NM_IP_CONFIG_SOURCE_DHCP);
+    nm_dhcp_option_add_option_u64(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_INTERFACE_MTU,
+                                  mtu);
+    nm_ip4_config_set_mtu(ip4_config, mtu, NM_IP_CONFIG_SOURCE_DHCP);
 }
 
 static void
-lease_parse_metered (NDhcp4ClientLease *lease,
-                     NMIP4Config *ip4_config,
-                     GHashTable *options)
+lease_parse_metered(NDhcp4ClientLease *lease, NMIP4Config *ip4_config, GHashTable *options)
 {
-	gboolean metered = FALSE;
-	uint8_t *data;
-	size_t n_data;
-	int r;
-
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_VENDOR_SPECIFIC, &data, &n_data);
-	if (r)
-		metered = FALSE;
-	else
-		metered = !!memmem (data, n_data, "ANDROID_METERED", NM_STRLEN ("ANDROID_METERED"));
-
-	/* TODO: expose the vendor specific option when present */
-	nm_ip4_config_set_metered (ip4_config, metered);
+    gboolean metered = FALSE;
+    uint8_t *data;
+    size_t   n_data;
+    int      r;
+
+    r = n_dhcp4_client_lease_query(lease, NM_DHCP_OPTION_DHCP4_VENDOR_SPECIFIC, &data, &n_data);
+    if (r)
+        metered = FALSE;
+    else
+        metered = !!memmem(data, n_data, "ANDROID_METERED", NM_STRLEN("ANDROID_METERED"));
+
+    /* TODO: expose the vendor specific option when present */
+    nm_ip4_config_set_metered(ip4_config, metered);
 }
 
 static void
-lease_parse_ntps (NDhcp4ClientLease *lease,
-                  GHashTable *options)
+lease_parse_ntps(NDhcp4ClientLease *lease, GHashTable *options)
 {
-	nm_auto_free_gstring GString *str = NULL;
-	char addr_str[NM_UTILS_INET_ADDRSTRLEN];
-	struct in_addr addr;
-	uint8_t *data;
-	size_t n_data;
-	int r;
-
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_NTP_SERVER, &data, &n_data);
-	if (r)
-		return;
-
-	nm_gstring_prepare (&str);
-
-	while (lease_option_next_in_addr (&addr, &data, &n_data)) {
-		_nm_utils_inet4_ntop (addr.s_addr, addr_str);
-		g_string_append (nm_gstring_add_space_delimiter (str), addr_str);
-	}
-
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_NTP_SERVER,
-	                           str->str);
+    nm_auto_free_gstring GString *str = NULL;
+    char                          addr_str[NM_UTILS_INET_ADDRSTRLEN];
+    struct in_addr                addr;
+    uint8_t *                     data;
+    size_t                        n_data;
+    int                           r;
+
+    r = n_dhcp4_client_lease_query(lease, NM_DHCP_OPTION_DHCP4_NTP_SERVER, &data, &n_data);
+    if (r)
+        return;
+
+    nm_gstring_prepare(&str);
+
+    while (lease_option_next_in_addr(&addr, &data, &n_data)) {
+        _nm_utils_inet4_ntop(addr.s_addr, addr_str);
+        g_string_append(nm_gstring_add_space_delimiter(str), addr_str);
+    }
+
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_NTP_SERVER,
+                              str->str);
 }
 
 static void
-lease_parse_hostname (NDhcp4ClientLease *lease,
-                      GHashTable *options)
+lease_parse_hostname(NDhcp4ClientLease *lease, GHashTable *options)
 {
-	nm_auto_free_gstring GString *str = NULL;
-	uint8_t *data;
-	size_t n_data;
-	int r;
+    nm_auto_free_gstring GString *str = NULL;
+    uint8_t *                     data;
+    size_t                        n_data;
+    int                           r;
 
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_HOST_NAME, &data, &n_data);
-	if (r)
-		return;
+    r = n_dhcp4_client_lease_query(lease, NM_DHCP_OPTION_DHCP4_HOST_NAME, &data, &n_data);
+    if (r)
+        return;
 
-	str = g_string_new_len ((char *)data, n_data);
+    str = g_string_new_len((char *) data, n_data);
 
-	if (is_localhost(str->str))
-		return;
+    if (nm_utils_is_localhost(str->str))
+        return;
 
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_HOST_NAME,
-	                           str->str);
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_HOST_NAME,
+                              str->str);
 }
 
 static void
-lease_parse_domainname (NDhcp4ClientLease *lease,
-                        NMIP4Config *ip4_config,
-                        GHashTable *options)
+lease_parse_domainname(NDhcp4ClientLease *lease, NMIP4Config *ip4_config, GHashTable *options)
 {
-	nm_auto_free_gstring GString *str = NULL;
-	gs_strfreev char **domains = NULL;
-	uint8_t *data;
-	size_t n_data;
-	int r;
-
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_DOMAIN_NAME, &data, &n_data);
-	if (r)
-		return;
-
-	str = g_string_new_len ((char *)data, n_data);
-
-	/* Multiple domains sometimes stuffed into option 15 "Domain Name". */
-	domains = g_strsplit (str->str, " ", 0);
-	nm_gstring_prepare (&str);
-
-	for (char **d = domains; *d; d++) {
-		if (is_localhost(*d))
-			return;
-
-		g_string_append (nm_gstring_add_space_delimiter (str), *d);
-		nm_ip4_config_add_domain (ip4_config, *d);
-	}
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_DOMAIN_NAME,
-	                           str->str);
+    nm_auto_free_gstring GString *str     = NULL;
+    gs_strfreev char **           domains = NULL;
+    uint8_t *                     data;
+    size_t                        n_data;
+    int                           r;
+
+    r = n_dhcp4_client_lease_query(lease, NM_DHCP_OPTION_DHCP4_DOMAIN_NAME, &data, &n_data);
+    if (r)
+        return;
+
+    str = g_string_new_len((char *) data, n_data);
+
+    /* Multiple domains sometimes stuffed into option 15 "Domain Name". */
+    domains = g_strsplit(str->str, " ", 0);
+    nm_gstring_prepare(&str);
+
+    for (char **d = domains; *d; d++) {
+        if (nm_utils_is_localhost(*d))
+            return;
+
+        g_string_append(nm_gstring_add_space_delimiter(str), *d);
+        nm_ip4_config_add_domain(ip4_config, *d);
+    }
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_DOMAIN_NAME,
+                              str->str);
 }
 
 char **
-nm_dhcp_parse_search_list (guint8 *data, size_t n_data)
+nm_dhcp_parse_search_list(guint8 *data, size_t n_data)
 {
-	GPtrArray *array = NULL;
-	guint8 *cache = data;
-	size_t n_cache = 0;
+    GPtrArray *array   = NULL;
+    guint8 *   cache   = data;
+    size_t     n_cache = 0;
 
-	for (;;) {
-		nm_auto_free_gstring GString *domain = NULL;
+    for (;;) {
+        nm_auto_free_gstring GString *domain = NULL;
 
-		nm_gstring_prepare (&domain);
+        nm_gstring_prepare(&domain);
 
-		if (!lease_option_print_domain_name (domain, cache, &n_cache, &data, &n_data))
-			break;
+        if (!lease_option_print_domain_name(domain, cache, &n_cache, &data, &n_data))
+            break;
 
-		if (!array)
-			array = g_ptr_array_new ();
+        if (!array)
+            array = g_ptr_array_new();
 
-		g_ptr_array_add (array, g_string_free (domain, FALSE));
-		domain = NULL;
-	}
+        g_ptr_array_add(array, g_string_free(domain, FALSE));
+        domain = NULL;
+    }
 
-	if (array) {
-		g_ptr_array_add (array, NULL);
-		return (char **) g_ptr_array_free (array, FALSE);
-	} else
-		return NULL;
+    if (array) {
+        g_ptr_array_add(array, NULL);
+        return (char **) g_ptr_array_free(array, FALSE);
+    } else
+        return NULL;
 }
 
 static void
-lease_parse_search_domains (NDhcp4ClientLease *lease,
-                            NMIP4Config *ip4_config,
-                            GHashTable *options)
+lease_parse_search_domains(NDhcp4ClientLease *lease, NMIP4Config *ip4_config, GHashTable *options)
 {
-	nm_auto_free_gstring GString *str = NULL;
-	uint8_t *data;
-	size_t n_data;
-	gs_strfreev char **domains = NULL;
-	guint i;
-	int r;
-
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_DOMAIN_SEARCH_LIST, &data, &n_data);
-	if (r)
-		return;
-
-	domains = nm_dhcp_parse_search_list (data, n_data);
-	nm_gstring_prepare (&str);
-
-	for (i = 0; domains && domains[i]; i++) {
-		g_string_append (nm_gstring_add_space_delimiter (str), domains[i]);
-		nm_ip4_config_add_search (ip4_config, domains[i]);
-	}
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_DOMAIN_SEARCH_LIST,
-	                           str->str);
+    nm_auto_free_gstring GString *str = NULL;
+    uint8_t *                     data;
+    size_t                        n_data;
+    gs_strfreev char **           domains = NULL;
+    guint                         i;
+    int                           r;
+
+    r = n_dhcp4_client_lease_query(lease, NM_DHCP_OPTION_DHCP4_DOMAIN_SEARCH_LIST, &data, &n_data);
+    if (r)
+        return;
+
+    domains = nm_dhcp_parse_search_list(data, n_data);
+    nm_gstring_prepare(&str);
+
+    for (i = 0; domains && domains[i]; i++) {
+        g_string_append(nm_gstring_add_space_delimiter(str), domains[i]);
+        nm_ip4_config_add_search(ip4_config, domains[i]);
+    }
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_DOMAIN_SEARCH_LIST,
+                              str->str);
 }
 
 static void
-lease_parse_root_path (NDhcp4ClientLease *lease,
-                       GHashTable *options)
+lease_parse_root_path(NDhcp4ClientLease *lease, GHashTable *options)
 {
-	nm_auto_free_gstring GString *str = NULL;
-	uint8_t *data;
-	size_t n_data;
-	int r;
-
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_ROOT_PATH, &data, &n_data);
-	if (r)
-		return;
-
-	str = g_string_new_len ((char *)data, n_data);
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_ROOT_PATH,
-	                           str->str);
+    nm_auto_free_gstring GString *str = NULL;
+    uint8_t *                     data;
+    size_t                        n_data;
+    int                           r;
+
+    r = n_dhcp4_client_lease_query(lease, NM_DHCP_OPTION_DHCP4_ROOT_PATH, &data, &n_data);
+    if (r)
+        return;
+
+    str = g_string_new_len((char *) data, n_data);
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_ROOT_PATH,
+                              str->str);
 }
 
 static void
-lease_parse_wpad (NDhcp4ClientLease *lease,
-                  GHashTable *options)
+lease_parse_wpad(NDhcp4ClientLease *lease, GHashTable *options)
 {
-	gs_free char *wpad = NULL;
-	uint8_t *data;
-	size_t n_data;
-	int r;
-
-	r = n_dhcp4_client_lease_query (lease, NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY, &data, &n_data);
-	if (r)
-		return;
-
-	nm_utils_buf_utf8safe_escape ((char *)data, n_data, 0, &wpad);
-	if (wpad == NULL)
-		wpad = g_strndup ((char *)data, n_data);
-
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY,
-	                           wpad);
+    gs_free char *wpad = NULL;
+    uint8_t *     data;
+    size_t        n_data;
+    int           r;
+
+    r = n_dhcp4_client_lease_query(lease,
+                                   NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY,
+                                   &data,
+                                   &n_data);
+    if (r)
+        return;
+
+    nm_utils_buf_utf8safe_escape((char *) data, n_data, 0, &wpad);
+    if (wpad == NULL)
+        wpad = g_strndup((char *) data, n_data);
+
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY,
+                              wpad);
 }
 
 static void
-lease_parse_private_options (NDhcp4ClientLease *lease,
-                             GHashTable *options)
+lease_parse_nis_domain(NDhcp4ClientLease *lease, NMIP4Config *ip4_config, GHashTable *options)
 {
-	int i;
-
-	for (i = NM_DHCP_OPTION_DHCP4_PRIVATE_224; i <= NM_DHCP_OPTION_DHCP4_PRIVATE_254; i++) {
-		gs_free char *option_string = NULL;
-		guint8 *data;
-		gsize n_data;
-		int r;
-
-		/* We manage private options 249 (private classless static route) and 252 (wpad) in a special
-		 * way, so skip them as we here just manage all (the other) private options as raw data */
-		if (NM_IN_SET (i, NM_DHCP_OPTION_DHCP4_PRIVATE_CLASSLESS_STATIC_ROUTE,
-		                  NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY))
-			continue;
-
-		r = n_dhcp4_client_lease_query (lease, i, &data, &n_data);
-		if (r)
-			continue;
-
-		option_string = nm_utils_bin2hexstr_full (data, n_data, ':', FALSE, NULL);
-		nm_dhcp_option_take_option (options,
-		                            _nm_dhcp_option_dhcp4_options,
-		                            i,
-		                            g_steal_pointer (&option_string));
-	}
+    gs_free char *str_free = NULL;
+    const char *  str;
+    uint8_t *     data;
+    size_t        n_data;
+    guint         i;
+    int           r;
+
+    r = n_dhcp4_client_lease_query(lease, NM_DHCP_OPTION_DHCP4_NIS_DOMAIN, &data, &n_data);
+    if (r)
+        return;
+
+    for (i = 0; i < n_data; i++) {
+        if (!nm_is_ascii((char) data[i]))
+            return;
+    }
+
+    str = nm_strndup_a(300, (const char *) data, n_data, &str_free);
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_NIS_DOMAIN,
+                              str);
+    nm_ip4_config_set_nis_domain(ip4_config, str);
 }
 
-static NMIP4Config *
-lease_to_ip4_config (NMDedupMultiIndex *multi_idx,
-                     const char *iface,
-                     int ifindex,
-                     NDhcp4ClientLease *lease,
-                     guint32 route_table,
-                     guint32 route_metric,
-                     GHashTable **out_options,
-                     GError **error)
+static void
+lease_parse_private_options(NDhcp4ClientLease *lease, GHashTable *options)
 {
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	gs_unref_hashtable GHashTable *options = NULL;
-
-	g_return_val_if_fail (lease != NULL, NULL);
-
-	ip4_config = nm_ip4_config_new (multi_idx, ifindex);
-	options = nm_dhcp_option_create_options_dict ();
-
-	if (!lease_parse_address (lease, ip4_config, options, error))
-		return NULL;
-
-	lease_parse_routes (lease, ip4_config, options, route_table, route_metric);
-	lease_parse_domain_name_servers (lease, ip4_config, options);
-	lease_parse_domainname (lease, ip4_config, options);
-	lease_parse_search_domains (lease, ip4_config, options);
-	lease_parse_mtu (lease, ip4_config, options);
-	lease_parse_metered (lease, ip4_config, options);
-
-	lease_parse_hostname (lease, options);
-	lease_parse_ntps (lease, options);
-	lease_parse_root_path (lease, options);
-	lease_parse_wpad (lease, options);
-	lease_parse_private_options (lease, options);
+    int i;
+
+    for (i = NM_DHCP_OPTION_DHCP4_PRIVATE_224; i <= NM_DHCP_OPTION_DHCP4_PRIVATE_254; i++) {
+        gs_free char *option_string = NULL;
+        guint8 *      data;
+        gsize         n_data;
+        int           r;
+
+        /* We manage private options 249 (private classless static route) and 252 (wpad) in a special
+         * way, so skip them as we here just manage all (the other) private options as raw data */
+        if (NM_IN_SET(i,
+                      NM_DHCP_OPTION_DHCP4_PRIVATE_CLASSLESS_STATIC_ROUTE,
+                      NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY))
+            continue;
+
+        r = n_dhcp4_client_lease_query(lease, i, &data, &n_data);
+        if (r)
+            continue;
+
+        option_string = nm_utils_bin2hexstr_full(data, n_data, ':', FALSE, NULL);
+        nm_dhcp_option_take_option(options,
+                                   _nm_dhcp_option_dhcp4_options,
+                                   i,
+                                   g_steal_pointer(&option_string));
+    }
+}
 
-	NM_SET_OUT (out_options, g_steal_pointer (&options));
-	return g_steal_pointer (&ip4_config);
+static NMIP4Config *
+lease_to_ip4_config(NMDedupMultiIndex *multi_idx,
+                    const char *       iface,
+                    int                ifindex,
+                    NDhcp4ClientLease *lease,
+                    guint32            route_table,
+                    guint32            route_metric,
+                    GHashTable **      out_options,
+                    GError **          error)
+{
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    gs_unref_hashtable GHashTable *options  = NULL;
+
+    g_return_val_if_fail(lease != NULL, NULL);
+
+    ip4_config = nm_ip4_config_new(multi_idx, ifindex);
+    options    = nm_dhcp_option_create_options_dict();
+
+    if (!lease_parse_address(lease, ip4_config, options, error))
+        return NULL;
+
+    lease_parse_routes(lease, ip4_config, options, route_table, route_metric);
+    lease_parse_address_list(lease, ip4_config, NM_DHCP_OPTION_DHCP4_DOMAIN_NAME_SERVER, options);
+    lease_parse_domainname(lease, ip4_config, options);
+    lease_parse_search_domains(lease, ip4_config, options);
+    lease_parse_mtu(lease, ip4_config, options);
+    lease_parse_metered(lease, ip4_config, options);
+
+    lease_parse_hostname(lease, options);
+    lease_parse_ntps(lease, options);
+    lease_parse_root_path(lease, options);
+    lease_parse_wpad(lease, options);
+    lease_parse_nis_domain(lease, ip4_config, options);
+    lease_parse_address_list(lease, ip4_config, NM_DHCP_OPTION_DHCP4_NIS_SERVERS, options);
+    lease_parse_address_list(lease, ip4_config, NM_DHCP_OPTION_DHCP4_NETBIOS_NAMESERVER, options);
+    lease_parse_private_options(lease, options);
+
+    NM_SET_OUT(out_options, g_steal_pointer(&options));
+    return g_steal_pointer(&ip4_config);
 }
 
 /*****************************************************************************/
 
 static void
-lease_save (NMDhcpNettools *self, NDhcp4ClientLease *lease, const char *lease_file)
+lease_save(NMDhcpNettools *self, NDhcp4ClientLease *lease, const char *lease_file)
 {
-	struct in_addr a_address;
-	nm_auto_free_gstring GString *new_contents = NULL;
-	char sbuf[NM_UTILS_INET_ADDRSTRLEN];
-	gs_free_error GError *error = NULL;
+    struct in_addr       a_address;
+    nm_auto_free_gstring GString *new_contents = NULL;
+    char                          sbuf[NM_UTILS_INET_ADDRSTRLEN];
+    gs_free_error GError *error = NULL;
 
-	nm_assert (lease);
-	nm_assert (lease_file);
+    nm_assert(lease);
+    nm_assert(lease_file);
 
-	new_contents = g_string_new ("# This is private data. Do not parse.\n");
+    new_contents = g_string_new("# This is private data. Do not parse.\n");
 
-	n_dhcp4_client_lease_get_yiaddr (lease, &a_address);
-	if (a_address.s_addr == INADDR_ANY)
-		return;
+    n_dhcp4_client_lease_get_yiaddr(lease, &a_address);
+    if (a_address.s_addr == INADDR_ANY)
+        return;
 
-	g_string_append_printf (new_contents,
-	                        "ADDRESS=%s\n", _nm_utils_inet4_ntop (a_address.s_addr, sbuf));
+    g_string_append_printf(new_contents,
+                           "ADDRESS=%s\n",
+                           _nm_utils_inet4_ntop(a_address.s_addr, sbuf));
 
-	if (!g_file_set_contents (lease_file,
-	                          new_contents->str,
-	                          -1,
-	                          &error))
-		_LOGW ("error saving lease to %s: %s", lease_file, error->message);
+    if (!g_file_set_contents(lease_file, new_contents->str, -1, &error))
+        _LOGW("error saving lease to %s: %s", lease_file, error->message);
 }
 
 static void
-bound4_handle (NMDhcpNettools *self, NDhcp4ClientLease *lease, gboolean extended)
+bound4_handle(NMDhcpNettools *self, NDhcp4ClientLease *lease, gboolean extended)
 {
-	NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE (self);
-	const char *iface = nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self));
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	gs_unref_hashtable GHashTable *options = NULL;
-	GError *error = NULL;
-
-	_LOGT ("lease available (%s)", extended ? "extended" : "new");
-
-	ip4_config = lease_to_ip4_config (nm_dhcp_client_get_multi_idx (NM_DHCP_CLIENT (self)),
-	                                  iface,
-	                                  nm_dhcp_client_get_ifindex (NM_DHCP_CLIENT (self)),
-	                                  lease,
-	                                  nm_dhcp_client_get_route_table (NM_DHCP_CLIENT (self)),
-	                                  nm_dhcp_client_get_route_metric (NM_DHCP_CLIENT (self)),
-	                                  &options,
-	                                  &error);
-	if (!ip4_config) {
-		_LOGW ("%s", error->message);
-		g_clear_error (&error);
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
-		return;
-	}
-
-	nm_dhcp_option_add_requests_to_options (options, _nm_dhcp_option_dhcp4_options);
-	lease_save (self, lease, priv->lease_file);
-
-	nm_dhcp_client_set_state (NM_DHCP_CLIENT (self),
-	                          extended ? NM_DHCP_STATE_EXTENDED : NM_DHCP_STATE_BOUND,
-	                          NM_IP_CONFIG_CAST (ip4_config),
-	                          options);
+    NMDhcpNettoolsPrivate *priv             = NM_DHCP_NETTOOLS_GET_PRIVATE(self);
+    const char *           iface            = nm_dhcp_client_get_iface(NM_DHCP_CLIENT(self));
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    gs_unref_hashtable GHashTable *options  = NULL;
+    GError *                       error    = NULL;
+
+    _LOGT("lease available (%s)", extended ? "extended" : "new");
+
+    ip4_config = lease_to_ip4_config(nm_dhcp_client_get_multi_idx(NM_DHCP_CLIENT(self)),
+                                     iface,
+                                     nm_dhcp_client_get_ifindex(NM_DHCP_CLIENT(self)),
+                                     lease,
+                                     nm_dhcp_client_get_route_table(NM_DHCP_CLIENT(self)),
+                                     nm_dhcp_client_get_route_metric(NM_DHCP_CLIENT(self)),
+                                     &options,
+                                     &error);
+    if (!ip4_config) {
+        _LOGW("%s", error->message);
+        g_clear_error(&error);
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(self), NM_DHCP_STATE_FAIL, NULL, NULL);
+        return;
+    }
+
+    nm_dhcp_option_add_requests_to_options(options, _nm_dhcp_option_dhcp4_options);
+    lease_save(self, lease, priv->lease_file);
+
+    nm_dhcp_client_set_state(NM_DHCP_CLIENT(self),
+                             extended ? NM_DHCP_STATE_EXTENDED : NM_DHCP_STATE_BOUND,
+                             NM_IP_CONFIG_CAST(ip4_config),
+                             options);
 }
 
-static gboolean
-dhcp4_event_handle (NMDhcpNettools *self,
-                    NDhcp4ClientEvent *event)
+static void
+dhcp4_event_handle(NMDhcpNettools *self, NDhcp4ClientEvent *event)
 {
-	NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE (self);
-	int r;
-
-	_LOGT ("client event %d", event->event);
-
-	switch (event->event) {
-	case N_DHCP4_CLIENT_EVENT_OFFER:
-		/* always accept the first lease */
-		r = n_dhcp4_client_lease_select (event->offer.lease);
-		if (r)
-			_LOGW ("selecting lease failed: %d", r);
-		break;
-	case N_DHCP4_CLIENT_EVENT_RETRACTED:
-	case N_DHCP4_CLIENT_EVENT_EXPIRED:
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_EXPIRE, NULL, NULL);
-		break;
-	case N_DHCP4_CLIENT_EVENT_CANCELLED:
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
-		break;
-	case N_DHCP4_CLIENT_EVENT_GRANTED:
-		priv->lease = n_dhcp4_client_lease_ref (event->granted.lease);
-		bound4_handle (self, event->granted.lease, FALSE);
-		break;
-	case N_DHCP4_CLIENT_EVENT_EXTENDED:
-		bound4_handle (self, event->extended.lease, TRUE);
-		break;
-	case N_DHCP4_CLIENT_EVENT_DOWN:
-		/* ignore down events, they are purely informational */
-		break;
-	case N_DHCP4_CLIENT_EVENT_LOG: {
-			NMLogLevel nm_level;
-
-			nm_level = nm_log_level_from_syslog (event->log.level);
-			if (nm_logging_enabled (nm_level, LOGD_DHCP4)) {
-				nm_log (nm_level, LOGD_DHCP4, NULL , NULL,
-				        "dhcp4 (%s): %s",
-				        nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self)),
-				        event->log.message);
-			}
-		}
-		break;
-	default:
-		_LOGW ("unhandled DHCP event %d", event->event);
-		break;
-	}
-
-	return TRUE;
+    NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE(self);
+    struct in_addr         server_id;
+    char                   addr_str[INET_ADDRSTRLEN];
+    int                    r;
+
+    _LOGT("client event %d", event->event);
+
+    switch (event->event) {
+    case N_DHCP4_CLIENT_EVENT_OFFER:
+        r = n_dhcp4_client_lease_get_server_identifier(event->offer.lease, &server_id);
+        if (r) {
+            _LOGW("selecting lease failed: %d", r);
+            return;
+        }
+
+        if (nm_dhcp_client_server_id_is_rejected(NM_DHCP_CLIENT(self), &server_id)) {
+            _LOGD("server-id %s is in the reject-list, ignoring",
+                  nm_utils_inet_ntop(AF_INET, &server_id, addr_str));
+            return;
+        }
+
+        r = n_dhcp4_client_lease_select(event->offer.lease);
+        if (r) {
+            _LOGW("selecting lease failed: %d", r);
+            return;
+        }
+        break;
+    case N_DHCP4_CLIENT_EVENT_RETRACTED:
+    case N_DHCP4_CLIENT_EVENT_EXPIRED:
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(self), NM_DHCP_STATE_EXPIRE, NULL, NULL);
+        break;
+    case N_DHCP4_CLIENT_EVENT_CANCELLED:
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(self), NM_DHCP_STATE_FAIL, NULL, NULL);
+        break;
+    case N_DHCP4_CLIENT_EVENT_GRANTED:
+        priv->lease = n_dhcp4_client_lease_ref(event->granted.lease);
+        bound4_handle(self, event->granted.lease, FALSE);
+        break;
+    case N_DHCP4_CLIENT_EVENT_EXTENDED:
+        bound4_handle(self, event->extended.lease, TRUE);
+        break;
+    case N_DHCP4_CLIENT_EVENT_DOWN:
+        /* ignore down events, they are purely informational */
+        break;
+    case N_DHCP4_CLIENT_EVENT_LOG:
+    {
+        NMLogLevel nm_level;
+
+        nm_level = nm_log_level_from_syslog(event->log.level);
+        if (nm_logging_enabled(nm_level, LOGD_DHCP4)) {
+            nm_log(nm_level,
+                   LOGD_DHCP4,
+                   NULL,
+                   NULL,
+                   "dhcp4 (%s): %s",
+                   nm_dhcp_client_get_iface(NM_DHCP_CLIENT(self)),
+                   event->log.message);
+        }
+    } break;
+    default:
+        _LOGW("unhandled DHCP event %d", event->event);
+        break;
+    }
 }
 
 static gboolean
-dhcp4_event_cb (int fd,
-                GIOCondition condition,
-                gpointer data)
+dhcp4_event_cb(int fd, GIOCondition condition, gpointer data)
 {
-	NMDhcpNettools *self = data;
-	NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE (self);
-	NDhcp4ClientEvent *event;
-	int r;
-
-	r = n_dhcp4_client_dispatch (priv->client);
-	if (r < 0) {
-		/* FIXME: if any operation (e.g. send()) fails during the
-		 * dispatch, n-dhcp4 returns an error without arming timers
-		 * or progressing state, so the only reasonable thing to do
-		 * is to move to failed state so that the client will be
-		 * restarted. Ideally n-dhcp4 should retry failed operations
-		 * a predefined number of times (possibly infinite).
-		 */
-		_LOGE ("error %d dispatching events", r);
-		nm_clear_g_source_inst (&priv->event_source);
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
-		return G_SOURCE_REMOVE;
-	}
-
-	while (!n_dhcp4_client_pop_event (priv->client, &event) && event) {
-		dhcp4_event_handle (self, event);
-	}
-
-	return G_SOURCE_CONTINUE;
+    NMDhcpNettools *       self = data;
+    NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE(self);
+    NDhcp4ClientEvent *    event;
+    int                    r;
+
+    r = n_dhcp4_client_dispatch(priv->client);
+    if (r < 0) {
+        /* FIXME: if any operation (e.g. send()) fails during the
+         * dispatch, n-dhcp4 returns an error without arming timers
+         * or progressing state, so the only reasonable thing to do
+         * is to move to failed state so that the client will be
+         * restarted. Ideally n-dhcp4 should retry failed operations
+         * a predefined number of times (possibly infinite).
+         */
+        _LOGE("error %d dispatching events", r);
+        nm_clear_g_source_inst(&priv->event_source);
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(self), NM_DHCP_STATE_FAIL, NULL, NULL);
+        return G_SOURCE_REMOVE;
+    }
+
+    while (!n_dhcp4_client_pop_event(priv->client, &event) && event) {
+        dhcp4_event_handle(self, event);
+    }
+
+    return G_SOURCE_CONTINUE;
 }
 
 static gboolean
-nettools_create (NMDhcpNettools *self,
-                 const char *dhcp_anycast_addr,
-                 GError **error)
+nettools_create(NMDhcpNettools *self, const char *dhcp_anycast_addr, GError **error)
 {
-	NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE (self);
-	nm_auto (n_dhcp4_client_config_freep) NDhcp4ClientConfig *config = NULL;
-	nm_auto (n_dhcp4_client_unrefp) NDhcp4Client *client = NULL;
-	GBytes *hwaddr;
-	GBytes *bcast_hwaddr;
-	const uint8_t *hwaddr_arr;
-	const uint8_t *bcast_hwaddr_arr;
-	gsize hwaddr_len;
-	gsize bcast_hwaddr_len;
-	GBytes *client_id;
-	gs_unref_bytes GBytes *client_id_new = NULL;
-	const uint8_t *client_id_arr;
-	size_t client_id_len;
-	int r, fd, arp_type, transport;
-
-	g_return_val_if_fail (!priv->client, FALSE);
-
-	hwaddr = nm_dhcp_client_get_hw_addr (NM_DHCP_CLIENT (self));
-	if (   !hwaddr
-	    || !(hwaddr_arr = g_bytes_get_data (hwaddr, &hwaddr_len))
-	    || (arp_type = nm_utils_arp_type_detect_from_hwaddrlen (hwaddr_len)) < 0) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "invalid MAC address");
-		return FALSE;
-	}
-
-	bcast_hwaddr = nm_dhcp_client_get_broadcast_hw_addr (NM_DHCP_CLIENT (self));
-	bcast_hwaddr_arr = g_bytes_get_data (bcast_hwaddr, &bcast_hwaddr_len);
-
-	switch (arp_type) {
-	case ARPHRD_ETHER:
-		transport = N_DHCP4_TRANSPORT_ETHERNET;
-		break;
-	case ARPHRD_INFINIBAND:
-		transport = N_DHCP4_TRANSPORT_INFINIBAND;
-		break;
-	default:
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "unsupported ARP type");
-		return FALSE;
-	}
-
-	/* Note that we always set a client-id. In particular for infiniband that is necessary,
-	 * see https://tools.ietf.org/html/rfc4390#section-2.1 . */
-	client_id = nm_dhcp_client_get_client_id (NM_DHCP_CLIENT (self));
-	if (!client_id) {
-		client_id_new = nm_utils_dhcp_client_id_mac (arp_type, hwaddr_arr, hwaddr_len);
-		client_id = client_id_new;
-	}
-
-	if (   !(client_id_arr = g_bytes_get_data (client_id, &client_id_len))
-	    || client_id_len < 2) {
-
-		/* invalid client-ids are not expected. */
-		nm_assert_not_reached ();
-
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "no valid IPv4 client-id");
-		return FALSE;
-	}
-
-	r = n_dhcp4_client_config_new (&config);
-	if (r) {
-		set_error_nettools (error, r, "failed to create client-config");
-		return FALSE;
-	}
-
-	n_dhcp4_client_config_set_ifindex (config, nm_dhcp_client_get_ifindex (NM_DHCP_CLIENT (self)));
-	n_dhcp4_client_config_set_transport (config, transport);
-	n_dhcp4_client_config_set_mac (config, hwaddr_arr, hwaddr_len);
-	n_dhcp4_client_config_set_broadcast_mac (config, bcast_hwaddr_arr, bcast_hwaddr_len);
-	r = n_dhcp4_client_config_set_client_id (config,
-	                                         client_id_arr,
-	                                         NM_MIN (client_id_len, 1 + _NM_SD_MAX_CLIENT_ID_LEN));
-	if (r) {
-		set_error_nettools (error, r, "failed to set client-id");
-		return FALSE;
-	}
-
-	r = n_dhcp4_client_new (&client, config);
-	if (r) {
-		set_error_nettools (error, r, "failed to create client");
-		return FALSE;
-	}
-
-	priv->client = client;
-	client = NULL;
-
-	n_dhcp4_client_set_log_level (priv->client, nm_log_level_to_syslog (nm_logging_get_level (LOGD_DHCP4)));
-
-	n_dhcp4_client_get_fd (priv->client, &fd);
-
-	priv->event_source = nm_g_unix_fd_source_new (fd,
-	                                              G_IO_IN,
-	                                              G_PRIORITY_DEFAULT,
-	                                              dhcp4_event_cb,
-	                                              self,
-	                                              NULL);
-	g_source_attach (priv->event_source, NULL);
-
-	return TRUE;
+    NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE(self);
+    nm_auto(n_dhcp4_client_config_freep) NDhcp4ClientConfig *config = NULL;
+    nm_auto(n_dhcp4_client_unrefp) NDhcp4Client *            client = NULL;
+    GBytes *                                                 hwaddr;
+    GBytes *                                                 bcast_hwaddr;
+    const uint8_t *                                          hwaddr_arr;
+    const uint8_t *                                          bcast_hwaddr_arr;
+    gsize                                                    hwaddr_len;
+    gsize                                                    bcast_hwaddr_len;
+    GBytes *                                                 client_id;
+    gs_unref_bytes GBytes *client_id_new = NULL;
+    const uint8_t *        client_id_arr;
+    size_t                 client_id_len;
+    int                    r, fd, arp_type, transport;
+
+    g_return_val_if_fail(!priv->client, FALSE);
+
+    hwaddr = nm_dhcp_client_get_hw_addr(NM_DHCP_CLIENT(self));
+    if (!hwaddr || !(hwaddr_arr = g_bytes_get_data(hwaddr, &hwaddr_len))
+        || (arp_type = nm_utils_arp_type_detect_from_hwaddrlen(hwaddr_len)) < 0) {
+        nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "invalid MAC address");
+        return FALSE;
+    }
+
+    bcast_hwaddr     = nm_dhcp_client_get_broadcast_hw_addr(NM_DHCP_CLIENT(self));
+    bcast_hwaddr_arr = g_bytes_get_data(bcast_hwaddr, &bcast_hwaddr_len);
+
+    switch (arp_type) {
+    case ARPHRD_ETHER:
+        transport = N_DHCP4_TRANSPORT_ETHERNET;
+        break;
+    case ARPHRD_INFINIBAND:
+        transport = N_DHCP4_TRANSPORT_INFINIBAND;
+        break;
+    default:
+        nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "unsupported ARP type");
+        return FALSE;
+    }
+
+    /* Note that we always set a client-id. In particular for infiniband that is necessary,
+     * see https://tools.ietf.org/html/rfc4390#section-2.1 . */
+    client_id = nm_dhcp_client_get_client_id(NM_DHCP_CLIENT(self));
+    if (!client_id) {
+        client_id_new = nm_utils_dhcp_client_id_mac(arp_type, hwaddr_arr, hwaddr_len);
+        client_id     = client_id_new;
+    }
+
+    if (!(client_id_arr = g_bytes_get_data(client_id, &client_id_len)) || client_id_len < 2) {
+        /* invalid client-ids are not expected. */
+        nm_assert_not_reached();
+
+        nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "no valid IPv4 client-id");
+        return FALSE;
+    }
+
+    r = n_dhcp4_client_config_new(&config);
+    if (r) {
+        set_error_nettools(error, r, "failed to create client-config");
+        return FALSE;
+    }
+
+    n_dhcp4_client_config_set_ifindex(config, nm_dhcp_client_get_ifindex(NM_DHCP_CLIENT(self)));
+    n_dhcp4_client_config_set_transport(config, transport);
+    n_dhcp4_client_config_set_mac(config, hwaddr_arr, hwaddr_len);
+    n_dhcp4_client_config_set_broadcast_mac(config, bcast_hwaddr_arr, bcast_hwaddr_len);
+    r = n_dhcp4_client_config_set_client_id(config,
+                                            client_id_arr,
+                                            NM_MIN(client_id_len, 1 + _NM_SD_MAX_CLIENT_ID_LEN));
+    if (r) {
+        set_error_nettools(error, r, "failed to set client-id");
+        return FALSE;
+    }
+
+    r = n_dhcp4_client_new(&client, config);
+    if (r) {
+        set_error_nettools(error, r, "failed to create client");
+        return FALSE;
+    }
+
+    priv->client = client;
+    client       = NULL;
+
+    n_dhcp4_client_set_log_level(priv->client,
+                                 nm_log_level_to_syslog(nm_logging_get_level(LOGD_DHCP4)));
+
+    n_dhcp4_client_get_fd(priv->client, &fd);
+
+    priv->event_source =
+        nm_g_unix_fd_source_new(fd, G_IO_IN, G_PRIORITY_DEFAULT, dhcp4_event_cb, self, NULL);
+    g_source_attach(priv->event_source, NULL);
+
+    return TRUE;
 }
 
 static gboolean
-_accept (NMDhcpClient *client,
-         GError **error)
+_accept(NMDhcpClient *client, GError **error)
 {
-	NMDhcpNettools *self = NM_DHCP_NETTOOLS (client);
-	NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE (self);
-	int r;
+    NMDhcpNettools *       self = NM_DHCP_NETTOOLS(client);
+    NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE(self);
+    int                    r;
 
-	g_return_val_if_fail (priv->lease, FALSE);
+    g_return_val_if_fail(priv->lease, FALSE);
 
-	_LOGT ("accept");
+    _LOGT("accept");
 
-	r = n_dhcp4_client_lease_accept (priv->lease);
-	if (r) {
-		set_error_nettools (error, r, "failed to accept lease");
-		return FALSE;
-	}
+    r = n_dhcp4_client_lease_accept(priv->lease);
+    if (r) {
+        set_error_nettools(error, r, "failed to accept lease");
+        return FALSE;
+    }
 
-	priv->lease = n_dhcp4_client_lease_unref (priv->lease);
+    priv->lease = n_dhcp4_client_lease_unref(priv->lease);
 
-	return TRUE;
+    return TRUE;
 }
 
 static gboolean
-decline (NMDhcpClient *client,
-         const char *error_message,
-         GError **error)
+decline(NMDhcpClient *client, const char *error_message, GError **error)
 {
-	NMDhcpNettools *self = NM_DHCP_NETTOOLS (client);
-	NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE (self);
-	int r;
+    NMDhcpNettools *       self = NM_DHCP_NETTOOLS(client);
+    NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE(self);
+    int                    r;
 
-	g_return_val_if_fail (priv->lease, FALSE);
+    g_return_val_if_fail(priv->lease, FALSE);
 
-	_LOGT ("dhcp4-client: decline");
+    _LOGT("dhcp4-client: decline");
 
-	r = n_dhcp4_client_lease_decline (priv->lease, error_message);
-	if (r) {
-		set_error_nettools (error, r, "failed to decline lease");
-		return FALSE;
-	}
+    r = n_dhcp4_client_lease_decline(priv->lease, error_message);
+    if (r) {
+        set_error_nettools(error, r, "failed to decline lease");
+        return FALSE;
+    }
 
-	priv->lease = n_dhcp4_client_lease_unref (priv->lease);
+    priv->lease = n_dhcp4_client_lease_unref(priv->lease);
 
-	return TRUE;
+    return TRUE;
 }
 
 static guint8
-fqdn_flags_to_wire (NMDhcpHostnameFlags flags)
+fqdn_flags_to_wire(NMDhcpHostnameFlags flags)
 {
-	guint r = 0;
+    guint r = 0;
 
-	/* RFC 4702 section 2.1 */
-	if (flags & NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE)
-		r |= (1 << 0);
-	if (flags & NM_DHCP_HOSTNAME_FLAG_FQDN_ENCODED)
-		r |= (1 << 2);
-	if (flags & NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE)
-		r |= (1 << 3);
+    /* RFC 4702 section 2.1 */
+    if (flags & NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE)
+        r |= (1 << 0);
+    if (flags & NM_DHCP_HOSTNAME_FLAG_FQDN_ENCODED)
+        r |= (1 << 2);
+    if (flags & NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE)
+        r |= (1 << 3);
 
-	return r;
+    return r;
 }
 
 static gboolean
-ip4_start (NMDhcpClient *client,
-           const char *dhcp_anycast_addr,
-           const char *last_ip4_address,
-           GError **error)
+ip4_start(NMDhcpClient *client,
+          const char *  dhcp_anycast_addr,
+          const char *  last_ip4_address,
+          GError **     error)
 {
-	nm_auto (n_dhcp4_client_probe_config_freep) NDhcp4ClientProbeConfig *config = NULL;
-	NMDhcpNettools *self = NM_DHCP_NETTOOLS (client);
-	NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE (self);
-	gs_free char *lease_file = NULL;
-	struct in_addr last_addr = { 0 };
-	const char *hostname;
-	const char *mud_url;
-	int r, i;
-
-	g_return_val_if_fail (!priv->probe, FALSE);
-
-	if (!nettools_create (self, dhcp_anycast_addr, error))
-		return FALSE;
-
-	r = n_dhcp4_client_probe_config_new (&config);
-	if (r) {
-		set_error_nettools (error, r, "failed to create dhcp-client-probe-config");
-		return FALSE;
-	}
-
-	/*
-	 * FIXME:
-	 * Select, or configure, a reasonable start delay, to protect poor servers beeing flooded.
-	 */
-	n_dhcp4_client_probe_config_set_start_delay (config, 1);
-
-	nm_dhcp_utils_get_leasefile_path (AF_INET,
-	                                  "internal",
-	                                  nm_dhcp_client_get_iface (client),
-	                                  nm_dhcp_client_get_uuid (client),
-	                                  &lease_file);
-
-	if (last_ip4_address)
-		inet_pton (AF_INET, last_ip4_address, &last_addr);
-	else {
-		/*
-		 * TODO: we stick to the systemd-networkd lease file format. Quite easy for now to
-		 * just use the functions in systemd code. Anyway, as in the end we just use the
-		 * ip address from all the options found in the lease, write a function that parses
-		 * the lease file just for the assigned address and returns it in &last_address.
-		 * Then drop reference to systemd-networkd structures and functions.
-		 */
-		nm_auto (sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL;
-
-		dhcp_lease_load (&lease, lease_file);
-		if (lease)
-			sd_dhcp_lease_get_address (lease, &last_addr);
-	}
-
-	if (last_addr.s_addr) {
-		n_dhcp4_client_probe_config_set_requested_ip (config, last_addr);
-		n_dhcp4_client_probe_config_set_init_reboot (config, TRUE);
-	}
-
-	/* Add requested options */
-	for (i = 0; _nm_dhcp_option_dhcp4_options[i].name; i++) {
-		if (_nm_dhcp_option_dhcp4_options[i].include) {
-			nm_assert (_nm_dhcp_option_dhcp4_options[i].option_num <= 255);
-			n_dhcp4_client_probe_config_request_option (config,
-			                                            _nm_dhcp_option_dhcp4_options[i].option_num);
-		}
-	}
-
-	mud_url = nm_dhcp_client_get_mud_url (client);
-	if (mud_url) {
-		r = n_dhcp4_client_probe_config_append_option (config,
-		                                               NM_DHCP_OPTION_DHCP4_MUD_URL,
-		                                               mud_url,
-		                                               strlen (mud_url));
-		if (r) {
-			set_error_nettools (error, r, "failed to set MUD URL");
-			return FALSE;
-		}
-	}
-	hostname = nm_dhcp_client_get_hostname (client);
-	if (hostname) {
-		if (nm_dhcp_client_get_use_fqdn (client)) {
-			uint8_t buffer[255];
-			NMDhcpHostnameFlags flags;
-			size_t fqdn_len;
-
-			flags = nm_dhcp_client_get_hostname_flags (client);
-			buffer[0] = fqdn_flags_to_wire (flags);
-			buffer[1] = 0;   /* RCODE1 (deprecated) */
-			buffer[2] = 0;   /* RCODE2 (deprecated) */
-
-			if (flags & NM_DHCP_HOSTNAME_FLAG_FQDN_ENCODED) {
-				r = nm_sd_dns_name_to_wire_format (hostname,
-				                                   buffer + 3,
-				                                   sizeof (buffer) - 3,
-				                                   FALSE);
-				if (r <= 0) {
-					if (r < 0)
-						nm_utils_error_set_errno (error, r, "failed to convert DHCP FQDN: %s");
-					else
-						nm_utils_error_set (error, r, "failed to convert DHCP FQDN");
-					return FALSE;
-				}
-				fqdn_len = r;
-			} else {
-				fqdn_len = strlen (hostname);
-				if (fqdn_len > sizeof (buffer) - 3) {
-					nm_utils_error_set (error, r, "failed to set DHCP FQDN: name too long");
-					return FALSE;
-				}
-				memcpy (buffer + 3, hostname, fqdn_len);
-			}
-
-			r = n_dhcp4_client_probe_config_append_option (config,
-			                                               NM_DHCP_OPTION_DHCP4_CLIENT_FQDN,
-			                                               buffer,
-			                                               3 + fqdn_len);
-			if (r) {
-				set_error_nettools (error, r, "failed to set DHCP FQDN");
-				return FALSE;
-			}
-		} else {
-			r = n_dhcp4_client_probe_config_append_option (config,
-			                                               NM_DHCP_OPTION_DHCP4_HOST_NAME,
-			                                               hostname,
-			                                               strlen (hostname));
-			if (r) {
-				set_error_nettools (error, r, "failed to set DHCP hostname");
-				return FALSE;
-			}
-		}
-	}
-
-	g_free (priv->lease_file);
-	priv->lease_file = g_steal_pointer (&lease_file);
-
-	r = n_dhcp4_client_probe (priv->client, &priv->probe, config);
-	if (r) {
-		set_error_nettools (error, r, "failed to start DHCP client");
-		return FALSE;
-	}
-
-	_LOGT ("dhcp-client4: start %p", (gpointer) priv->client);
-
-	nm_dhcp_client_start_timeout (client);
-	return TRUE;
+    nm_auto(n_dhcp4_client_probe_config_freep) NDhcp4ClientProbeConfig *config = NULL;
+    NMDhcpNettools *       self       = NM_DHCP_NETTOOLS(client);
+    NMDhcpNettoolsPrivate *priv       = NM_DHCP_NETTOOLS_GET_PRIVATE(self);
+    gs_free char *         lease_file = NULL;
+    struct in_addr         last_addr  = {0};
+    const char *           hostname;
+    const char *           mud_url;
+    GBytes *               vendor_class_identifier;
+    int                    r, i;
+
+    g_return_val_if_fail(!priv->probe, FALSE);
+
+    if (!nettools_create(self, dhcp_anycast_addr, error))
+        return FALSE;
+
+    r = n_dhcp4_client_probe_config_new(&config);
+    if (r) {
+        set_error_nettools(error, r, "failed to create dhcp-client-probe-config");
+        return FALSE;
+    }
+
+    /*
+     * FIXME:
+     * Select, or configure, a reasonable start delay, to protect poor servers being flooded.
+     */
+    n_dhcp4_client_probe_config_set_start_delay(config, 1);
+
+    nm_dhcp_utils_get_leasefile_path(AF_INET,
+                                     "internal",
+                                     nm_dhcp_client_get_iface(client),
+                                     nm_dhcp_client_get_uuid(client),
+                                     &lease_file);
+
+    if (last_ip4_address)
+        inet_pton(AF_INET, last_ip4_address, &last_addr);
+    else {
+        /*
+         * TODO: we stick to the systemd-networkd lease file format. Quite easy for now to
+         * just use the functions in systemd code. Anyway, as in the end we just use the
+         * ip address from all the options found in the lease, write a function that parses
+         * the lease file just for the assigned address and returns it in &last_address.
+         * Then drop reference to systemd-networkd structures and functions.
+         */
+        nm_auto(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL;
+
+        dhcp_lease_load(&lease, lease_file);
+        if (lease)
+            sd_dhcp_lease_get_address(lease, &last_addr);
+    }
+
+    if (last_addr.s_addr) {
+        n_dhcp4_client_probe_config_set_requested_ip(config, last_addr);
+        n_dhcp4_client_probe_config_set_init_reboot(config, TRUE);
+    }
+
+    /* Add requested options */
+    for (i = 0; _nm_dhcp_option_dhcp4_options[i].name; i++) {
+        if (_nm_dhcp_option_dhcp4_options[i].include) {
+            nm_assert(_nm_dhcp_option_dhcp4_options[i].option_num <= 255);
+            n_dhcp4_client_probe_config_request_option(config,
+                                                       _nm_dhcp_option_dhcp4_options[i].option_num);
+        }
+    }
+
+    mud_url = nm_dhcp_client_get_mud_url(client);
+    if (mud_url) {
+        r = n_dhcp4_client_probe_config_append_option(config,
+                                                      NM_DHCP_OPTION_DHCP4_MUD_URL,
+                                                      mud_url,
+                                                      strlen(mud_url));
+        if (r) {
+            set_error_nettools(error, r, "failed to set MUD URL");
+            return FALSE;
+        }
+    }
+    hostname = nm_dhcp_client_get_hostname(client);
+    if (hostname) {
+        if (nm_dhcp_client_get_use_fqdn(client)) {
+            uint8_t             buffer[255];
+            NMDhcpHostnameFlags flags;
+            size_t              fqdn_len;
+
+            flags     = nm_dhcp_client_get_hostname_flags(client);
+            buffer[0] = fqdn_flags_to_wire(flags);
+            buffer[1] = 0; /* RCODE1 (deprecated) */
+            buffer[2] = 0; /* RCODE2 (deprecated) */
+
+            if (flags & NM_DHCP_HOSTNAME_FLAG_FQDN_ENCODED) {
+                r = nm_sd_dns_name_to_wire_format(hostname, buffer + 3, sizeof(buffer) - 3, FALSE);
+                if (r <= 0) {
+                    if (r < 0)
+                        nm_utils_error_set_errno(error, r, "failed to convert DHCP FQDN: %s");
+                    else
+                        nm_utils_error_set(error, r, "failed to convert DHCP FQDN");
+                    return FALSE;
+                }
+                fqdn_len = r;
+            } else {
+                fqdn_len = strlen(hostname);
+                if (fqdn_len > sizeof(buffer) - 3) {
+                    nm_utils_error_set(error, r, "failed to set DHCP FQDN: name too long");
+                    return FALSE;
+                }
+                memcpy(buffer + 3, hostname, fqdn_len);
+            }
+
+            r = n_dhcp4_client_probe_config_append_option(config,
+                                                          NM_DHCP_OPTION_DHCP4_CLIENT_FQDN,
+                                                          buffer,
+                                                          3 + fqdn_len);
+            if (r) {
+                set_error_nettools(error, r, "failed to set DHCP FQDN");
+                return FALSE;
+            }
+        } else {
+            r = n_dhcp4_client_probe_config_append_option(config,
+                                                          NM_DHCP_OPTION_DHCP4_HOST_NAME,
+                                                          hostname,
+                                                          strlen(hostname));
+            if (r) {
+                set_error_nettools(error, r, "failed to set DHCP hostname");
+                return FALSE;
+            }
+        }
+    }
+
+    vendor_class_identifier = nm_dhcp_client_get_vendor_class_identifier(client);
+    if (vendor_class_identifier) {
+        const void *option_data;
+        gsize       option_size;
+
+        option_data = g_bytes_get_data(vendor_class_identifier, &option_size);
+        nm_assert(option_data);
+        nm_assert(option_size <= 255);
+
+        r = n_dhcp4_client_probe_config_append_option(config,
+                                                      NM_DHCP_OPTION_DHCP4_VENDOR_CLASS_IDENTIFIER,
+                                                      option_data,
+                                                      option_size);
+        if (r) {
+            set_error_nettools(error, r, "failed to set vendor class identifier");
+            return FALSE;
+        }
+    }
+
+    g_free(priv->lease_file);
+    priv->lease_file = g_steal_pointer(&lease_file);
+
+    r = n_dhcp4_client_probe(priv->client, &priv->probe, config);
+    if (r) {
+        set_error_nettools(error, r, "failed to start DHCP client");
+        return FALSE;
+    }
+
+    _LOGT("dhcp-client4: start %p", (gpointer) priv->client);
+
+    nm_dhcp_client_start_timeout(client);
+    return TRUE;
 }
 
 static void
-stop (NMDhcpClient *client,
-      gboolean release)
+stop(NMDhcpClient *client, gboolean release)
 {
-	NMDhcpNettools *self = NM_DHCP_NETTOOLS (client);
-	NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE (self);
+    NMDhcpNettools *       self = NM_DHCP_NETTOOLS(client);
+    NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE(self);
 
-	NM_DHCP_CLIENT_CLASS (nm_dhcp_nettools_parent_class)->stop (client, release);
+    NM_DHCP_CLIENT_CLASS(nm_dhcp_nettools_parent_class)->stop(client, release);
 
-	_LOGT ("dhcp-client4: stop %p",
-	       (gpointer) priv->client);
+    _LOGT("dhcp-client4: stop %p", (gpointer) priv->client);
 
-	priv->probe = n_dhcp4_client_probe_free (priv->probe);
+    priv->probe = n_dhcp4_client_probe_free(priv->probe);
 }
 
 /*****************************************************************************/
 
 static void
-nm_dhcp_nettools_init (NMDhcpNettools *self)
-{
-}
+nm_dhcp_nettools_init(NMDhcpNettools *self)
+{}
 
 static void
-dispose (GObject *object)
+dispose(GObject *object)
 {
-	NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE (object);
+    NMDhcpNettoolsPrivate *priv = NM_DHCP_NETTOOLS_GET_PRIVATE(object);
 
-	nm_clear_g_free (&priv->lease_file);
-	nm_clear_g_source_inst (&priv->event_source);
-	nm_clear_pointer (&priv->lease, n_dhcp4_client_lease_unref);
-	nm_clear_pointer (&priv->probe, n_dhcp4_client_probe_free);
-	nm_clear_pointer (&priv->client, n_dhcp4_client_unref);
+    nm_clear_g_free(&priv->lease_file);
+    nm_clear_g_source_inst(&priv->event_source);
+    nm_clear_pointer(&priv->lease, n_dhcp4_client_lease_unref);
+    nm_clear_pointer(&priv->probe, n_dhcp4_client_probe_free);
+    nm_clear_pointer(&priv->client, n_dhcp4_client_unref);
 
-	G_OBJECT_CLASS (nm_dhcp_nettools_parent_class)->dispose (object);
+    G_OBJECT_CLASS(nm_dhcp_nettools_parent_class)->dispose(object);
 }
 
 static void
-nm_dhcp_nettools_class_init (NMDhcpNettoolsClass *class)
+nm_dhcp_nettools_class_init(NMDhcpNettoolsClass *class)
 {
-	NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS (class);
-	GObjectClass *object_class = G_OBJECT_CLASS (class);
+    NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS(class);
+    GObjectClass *     object_class = G_OBJECT_CLASS(class);
 
-	object_class->dispose = dispose;
+    object_class->dispose = dispose;
 
-	client_class->ip4_start = ip4_start;
-	client_class->accept = _accept;
-	client_class->decline = decline;
-	client_class->stop = stop;
+    client_class->ip4_start = ip4_start;
+    client_class->accept    = _accept;
+    client_class->decline   = decline;
+    client_class->stop      = stop;
 }
 
 const NMDhcpClientFactory _nm_dhcp_client_factory_nettools = {
-	.name         = "nettools",
-	.get_type     = nm_dhcp_nettools_get_type,
-	.experimental = TRUE,
+    .name         = "nettools",
+    .get_type     = nm_dhcp_nettools_get_type,
+    .experimental = TRUE,
 };
diff --git a/src/dhcp/nm-dhcp-options.c b/src/dhcp/nm-dhcp-options.c
index d902c77c..58d38201 100644
--- a/src/dhcp/nm-dhcp-options.c
+++ b/src/dhcp/nm-dhcp-options.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-2.1+
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /*
  * Copyright (C) 2019 Red Hat, Inc.
  */
@@ -7,263 +7,265 @@
 
 #include "nm-dhcp-options.h"
 
-
 #define REQPREFIX "requested_"
 
-#define REQ(_num, _name, _include) \
-	{ \
-		.name = REQPREFIX""_name, \
-		.option_num = _num, \
-		.include = _include, \
-	}
+#define REQ(_num, _name, _include)                                          \
+    {                                                                       \
+        .name = REQPREFIX ""_name, .option_num = _num, .include = _include, \
+    }
 
 const NMDhcpOption _nm_dhcp_option_dhcp4_options[] = {
-	REQ (NM_DHCP_OPTION_DHCP4_SUBNET_MASK,                       "subnet_mask",                     TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_TIME_OFFSET,                       "time_offset",                     TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_DOMAIN_NAME_SERVER,                "domain_name_servers",             TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_HOST_NAME,                         "host_name",                       TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_DOMAIN_NAME,                       "domain_name",                     TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_INTERFACE_MTU,                     "interface_mtu",                   TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_BROADCAST,                         "broadcast_address",               TRUE ),
-	/* RFC 3442: The Classless Static Routes option code MUST appear in the parameter
-	 *   request list prior to both the Router option code and the Static
-	 *   Routes option code, if present. */
-	REQ (NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE,            "rfc3442_classless_static_routes", TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_ROUTER,                            "routers",                         TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_STATIC_ROUTE,                      "static_routes",                   TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NIS_DOMAIN,                        "nis_domain",                      TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NIS_SERVERS,                       "nis_servers",                     TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NTP_SERVER,                        "ntp_servers",                     TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_SERVER_ID,                         "dhcp_server_identifier",          FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_DOMAIN_SEARCH_LIST,                "domain_search",                   TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_CLASSLESS_STATIC_ROUTE,    "ms_classless_static_routes",      TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY,       "wpad",                            TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP4_ROOT_PATH,                         "root_path",                       TRUE ),
+    REQ(NM_DHCP_OPTION_DHCP4_SUBNET_MASK, "subnet_mask", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_TIME_OFFSET, "time_offset", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_DOMAIN_NAME_SERVER, "domain_name_servers", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_HOST_NAME, "host_name", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_DOMAIN_NAME, "domain_name", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_INTERFACE_MTU, "interface_mtu", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_BROADCAST, "broadcast_address", TRUE),
+    /* RFC 3442: The Classless Static Routes option code MUST appear in the parameter
+     *   request list prior to both the Router option code and the Static
+     *   Routes option code, if present. */
+    REQ(NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE, "rfc3442_classless_static_routes", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_ROUTER, "routers", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_STATIC_ROUTE, "static_routes", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_NIS_DOMAIN, "nis_domain", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_NIS_SERVERS, "nis_servers", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_NTP_SERVER, "ntp_servers", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_SERVER_ID, "dhcp_server_identifier", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_DOMAIN_SEARCH_LIST, "domain_search", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_CLASSLESS_STATIC_ROUTE, "ms_classless_static_routes", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY, "wpad", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP4_ROOT_PATH, "root_path", TRUE),
 
-	REQ (NM_DHCP_OPTION_DHCP4_TIME_SERVERS,                      "time_servers",                    FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_IEN116_NAME_SERVERS,               "ien116_name_servers",             FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_LOG_SERVERS,                       "log_servers",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_COOKIE_SERVERS,                    "cookie_servers",                  FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_LPR_SERVERS,                       "lpr_servers",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_IMPRESS_SERVERS,                   "impress_servers",                 FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_RESOURCE_LOCATION_SERVERS,         "resource_location_servers",       FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_BOOT_FILE_SIZE,                    "boot_size",                       FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_MERIT_DUMP,                        "merit_dump",                      FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_SWAP_SERVER,                       "swap_server",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_EXTENSIONS_PATH,                   "extensions_path",                 FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_ENABLE_IP_FORWARDING,              "ip_forwarding",                   FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_ENABLE_SRC_ROUTING,                "non_local_source_routing",        FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_POLICY_FILTER,                     "policy_filter",                   FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_INTERFACE_MDR,                     "max_dgram_reassembly",            FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_INTERFACE_TTL,                     "default_ip_ttl",                  FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_INTERFACE_MTU_AGING_TIMEOUT,       "path_mtu_aging_timeout",          FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PATH_MTU_PLATEAU_TABLE,            "path_mtu_plateau_table",          FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_ALL_SUBNETS_LOCAL,                 "all_subnets_local",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PERFORM_MASK_DISCOVERY,            "perform_mask_discovery",          FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_MASK_SUPPLIER,                     "mask_supplier",                   FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_ROUTER_DISCOVERY,                  "router_discovery",                FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_ROUTER_SOLICITATION_ADDR,          "router_solicitation_address",     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_TRAILER_ENCAPSULATION,             "trailer_encapsulation",           FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_ARP_CACHE_TIMEOUT,                 "arp_cache_timeout",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_IEEE802_3_ENCAPSULATION,           "ieee802_3_encapsulation",         FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_DEFAULT_TCP_TTL,                   "default_tcp_ttl",                 FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_TCP_KEEPALIVE_INTERVAL,            "tcp_keepalive_internal",          FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_TCP_KEEPALIVE_GARBAGE,             "tcp_keepalive_garbage",           FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_VENDOR_SPECIFIC,                   "vendor_encapsulated_options",     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NETBIOS_NAMESERVER,                "netbios_name_servers",            FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NETBIOS_DD_SERVER,                 "netbios_dd_server",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_FONT_SERVERS,                      "font_servers",                    FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_X_DISPLAY_MANAGER,                 "x_display_manager",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_IP_ADDRESS_LEASE_TIME,             "dhcp_lease_time",                 FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_RENEWAL_T1_TIME,                   "dhcp_renewal_time",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_REBINDING_T2_TIME,                 "dhcp_rebinding_time",             FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_CLIENT_ID,                         "dhcp_client_identifier",          FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NEW_TZDB_TIMEZONE,                 "tcode",                           FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NWIP_DOMAIN,                       "nwip_domain",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NWIP_SUBOPTIONS,                   "nwip_suboptions",                 FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NISPLUS_DOMAIN,                    "nisplus_domain",                  FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NISPLUS_SERVERS,                   "nisplus_servers",                 FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_TFTP_SERVER_NAME,                  "tftp_server_name",                FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_BOOTFILE_NAME,                     "bootfile_name",                   FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_MOBILE_IP_HOME_AGENT,              "mobile_ip_home_agent",            FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_SMTP_SERVER,                       "smtp_server",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_POP_SERVER,                        "pop_server",                      FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NNTP_SERVER,                       "nntp_server",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_WWW_SERVER,                        "www_server",                      FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_FINGER_SERVER,                     "finger_server",                   FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_IRC_SERVER,                        "irc_server",                      FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_STREETTALK_SERVER,                 "streettalk_server",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_STREETTALK_DIR_ASSIST_SERVER,      "streettalk_directory_assistance_server", FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_SLP_DIRECTORY_AGENT,               "slp_directory_agent",             FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_SLP_SERVICE_SCOPE,                 "slp_service_scope",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_CLIENT_FQDN,                       "fqdn",                            FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_RELAY_AGENT_INFORMATION,           "relay_agent_information",         FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NDS_SERVERS,                       "nds_servers",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NDS_TREE_NAME,                     "nds_tree_name",                   FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NDS_CONTEXT,                       "nds_context",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_BCMS_CONTROLLER_NAMES,             "bcms_controller_names",           FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_BCMS_CONTROLLER_ADDRESS,           "bcms_controller_address",         FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_CLIENT_LAST_TRANSACTION,           "client_last_transaction_time",    FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_ASSOCIATED_IP,                     "associated_ip",                   FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PXE_SYSTEM_TYPE,                   "pxe_system_type",                 FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PXE_INTERFACE_ID,                  "pxe_interface_id",                FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PXE_CLIENT_ID,                     "pxe_client_id",                   FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_UAP_SERVERS,                       "uap_servers",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_GEOCONF_CIVIC,                     "geoconf_civic",                   FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NETINFO_SERVER_ADDRESS,            "netinfo_server_address",          FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NETINFO_SERVER_TAG,                "netinfo_server_tag",              FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_DEFAULT_URL,                       "default_url",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_AUTO_CONFIG,                       "auto_config",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NAME_SERVICE_SEARCH,               "name_service_search",             FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_SUBNET_SELECTION,                  "subnet_selection",                FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_VIVCO,                             "vivco",                           FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_VIVSO,                             "vivso",                           FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PANA_AGENT,                        "pana_agent",                      FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_V4_LOST,                           "v4_lost",                         FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_SIP_UA_CS_DOMAINS,                 "sip_ua_cs_domains",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_IPV4_ADDRESS_ANDSF,                "ipv4_address_andsf",              FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_RDNSS_SELECTION,                   "rndss_selection",                 FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_TFTP_SERVER_ADDRESS,               "tftp_server_address",             FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_V4_PORTPARAMS,                     "v4_portparams",                   FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_V4_CAPTIVE_PORTAL,                 "v4_captive_portal",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_MUD_URL,                           "mud_url",                         FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_LOADER_CONFIGFILE,                 "loader_configfile",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_LOADER_PATHPREFIX,                 "loader_pathprefix",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_LOADER_REBOOTTIME,                 "loader_reboottime",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_OPTION_6RD,                        "option_6rd",                      FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_V4_ACCESS_DOMAIN,                  "v4_access_domain",                FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_224,                       "private_224",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_225,                       "private_225",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_226,                       "private_226",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_227,                       "private_227",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_228,                       "private_228",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_229,                       "private_229",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_230,                       "private_230",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_231,                       "private_231",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_232,                       "private_232",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_233,                       "private_233",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_234,                       "private_234",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_235,                       "private_235",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_236,                       "private_236",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_237,                       "private_237",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_238,                       "private_238",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_239,                       "private_239",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_240,                       "private_240",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_241,                       "private_241",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_242,                       "private_242",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_243,                       "private_243",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_244,                       "private_244",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_245,                       "private_245",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_246,                       "private_246",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_247,                       "private_247",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_248,                       "private_248",                     FALSE ),
-	/* NM_DHCP_OPTION_DHCP4_PRIVATE_CLASSLESS_STATIC_ROUTE */
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_250,                       "private_250",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_251,                       "private_251",                     FALSE ),
-	/* NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY */
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_253,                       "private_253",                     FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_PRIVATE_254,                       "private_254",                     FALSE ),
+    REQ(NM_DHCP_OPTION_DHCP4_TIME_SERVERS, "time_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_IEN116_NAME_SERVERS, "ien116_name_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_LOG_SERVERS, "log_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_COOKIE_SERVERS, "cookie_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_LPR_SERVERS, "lpr_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_IMPRESS_SERVERS, "impress_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_RESOURCE_LOCATION_SERVERS, "resource_location_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_BOOT_FILE_SIZE, "boot_size", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_MERIT_DUMP, "merit_dump", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_SWAP_SERVER, "swap_server", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_EXTENSIONS_PATH, "extensions_path", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_ENABLE_IP_FORWARDING, "ip_forwarding", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_ENABLE_SRC_ROUTING, "non_local_source_routing", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_POLICY_FILTER, "policy_filter", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_INTERFACE_MDR, "max_dgram_reassembly", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_INTERFACE_TTL, "default_ip_ttl", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_INTERFACE_MTU_AGING_TIMEOUT, "path_mtu_aging_timeout", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PATH_MTU_PLATEAU_TABLE, "path_mtu_plateau_table", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_ALL_SUBNETS_LOCAL, "all_subnets_local", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PERFORM_MASK_DISCOVERY, "perform_mask_discovery", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_MASK_SUPPLIER, "mask_supplier", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_ROUTER_DISCOVERY, "router_discovery", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_ROUTER_SOLICITATION_ADDR, "router_solicitation_address", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_TRAILER_ENCAPSULATION, "trailer_encapsulation", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_ARP_CACHE_TIMEOUT, "arp_cache_timeout", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_IEEE802_3_ENCAPSULATION, "ieee802_3_encapsulation", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_DEFAULT_TCP_TTL, "default_tcp_ttl", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_TCP_KEEPALIVE_INTERVAL, "tcp_keepalive_internal", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_TCP_KEEPALIVE_GARBAGE, "tcp_keepalive_garbage", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_VENDOR_SPECIFIC, "vendor_encapsulated_options", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NETBIOS_NAMESERVER, "netbios_name_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NETBIOS_DD_SERVER, "netbios_dd_server", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_FONT_SERVERS, "font_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_X_DISPLAY_MANAGER, "x_display_manager", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_IP_ADDRESS_LEASE_TIME, "dhcp_lease_time", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_RENEWAL_T1_TIME, "dhcp_renewal_time", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_REBINDING_T2_TIME, "dhcp_rebinding_time", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_CLIENT_ID, "dhcp_client_identifier", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NEW_TZDB_TIMEZONE, "tcode", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NWIP_DOMAIN, "nwip_domain", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NWIP_SUBOPTIONS, "nwip_suboptions", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NISPLUS_DOMAIN, "nisplus_domain", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NISPLUS_SERVERS, "nisplus_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_TFTP_SERVER_NAME, "tftp_server_name", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_BOOTFILE_NAME, "bootfile_name", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_MOBILE_IP_HOME_AGENT, "mobile_ip_home_agent", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_SMTP_SERVER, "smtp_server", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_POP_SERVER, "pop_server", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NNTP_SERVER, "nntp_server", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_WWW_SERVER, "www_server", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_FINGER_SERVER, "finger_server", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_IRC_SERVER, "irc_server", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_STREETTALK_SERVER, "streettalk_server", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_STREETTALK_DIR_ASSIST_SERVER,
+        "streettalk_directory_assistance_server",
+        FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_SLP_DIRECTORY_AGENT, "slp_directory_agent", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_SLP_SERVICE_SCOPE, "slp_service_scope", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_CLIENT_FQDN, "fqdn", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_RELAY_AGENT_INFORMATION, "relay_agent_information", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NDS_SERVERS, "nds_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NDS_TREE_NAME, "nds_tree_name", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NDS_CONTEXT, "nds_context", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_BCMS_CONTROLLER_NAMES, "bcms_controller_names", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_BCMS_CONTROLLER_ADDRESS, "bcms_controller_address", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_CLIENT_LAST_TRANSACTION, "client_last_transaction_time", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_ASSOCIATED_IP, "associated_ip", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PXE_SYSTEM_TYPE, "pxe_system_type", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PXE_INTERFACE_ID, "pxe_interface_id", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PXE_CLIENT_ID, "pxe_client_id", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_UAP_SERVERS, "uap_servers", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_GEOCONF_CIVIC, "geoconf_civic", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NETINFO_SERVER_ADDRESS, "netinfo_server_address", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NETINFO_SERVER_TAG, "netinfo_server_tag", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_DEFAULT_URL, "default_url", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_AUTO_CONFIG, "auto_config", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NAME_SERVICE_SEARCH, "name_service_search", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_SUBNET_SELECTION, "subnet_selection", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_VIVCO, "vivco", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_VIVSO, "vivso", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PANA_AGENT, "pana_agent", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_V4_LOST, "v4_lost", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_SIP_UA_CS_DOMAINS, "sip_ua_cs_domains", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_IPV4_ADDRESS_ANDSF, "ipv4_address_andsf", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_RDNSS_SELECTION, "rndss_selection", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_TFTP_SERVER_ADDRESS, "tftp_server_address", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_V4_PORTPARAMS, "v4_portparams", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_V4_CAPTIVE_PORTAL, "v4_captive_portal", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_MUD_URL, "mud_url", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_LOADER_CONFIGFILE, "loader_configfile", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_LOADER_PATHPREFIX, "loader_pathprefix", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_LOADER_REBOOTTIME, "loader_reboottime", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_OPTION_6RD, "option_6rd", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_V4_ACCESS_DOMAIN, "v4_access_domain", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_224, "private_224", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_225, "private_225", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_226, "private_226", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_227, "private_227", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_228, "private_228", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_229, "private_229", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_230, "private_230", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_231, "private_231", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_232, "private_232", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_233, "private_233", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_234, "private_234", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_235, "private_235", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_236, "private_236", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_237, "private_237", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_238, "private_238", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_239, "private_239", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_240, "private_240", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_241, "private_241", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_242, "private_242", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_243, "private_243", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_244, "private_244", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_245, "private_245", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_246, "private_246", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_247, "private_247", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_248, "private_248", FALSE),
+    /* NM_DHCP_OPTION_DHCP4_PRIVATE_CLASSLESS_STATIC_ROUTE */
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_250, "private_250", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_251, "private_251", FALSE),
+    /* NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY */
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_253, "private_253", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_PRIVATE_254, "private_254", FALSE),
 
-	/* Internal values */
-	REQ (NM_DHCP_OPTION_DHCP4_NM_IP_ADDRESS,                     "ip_address",                      FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NM_EXPIRY,                         "expiry",                          FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP4_NM_NEXT_SERVER,                    "next_server",                     FALSE ),
+    /* Internal values */
+    REQ(NM_DHCP_OPTION_DHCP4_NM_IP_ADDRESS, "ip_address", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NM_EXPIRY, "expiry", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP4_NM_NEXT_SERVER, "next_server", FALSE),
 
-	{ 0 }
-};
+    {0}};
 
 const NMDhcpOption _nm_dhcp_option_dhcp6_options[] = {
-	REQ (NM_DHCP_OPTION_DHCP6_CLIENTID,                         "dhcp6_client_id",     FALSE ),
-
-	/* Don't request server ID by default; some servers don't reply to
-	 * Information Requests that request the Server ID.
-	 */
-	REQ (NM_DHCP_OPTION_DHCP6_SERVERID,                         "dhcp6_server_id",     FALSE ),
+    REQ(NM_DHCP_OPTION_DHCP6_CLIENTID, "dhcp6_client_id", FALSE),
 
-	REQ (NM_DHCP_OPTION_DHCP6_DNS_SERVERS,                      "dhcp6_name_servers",  TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP6_DOMAIN_LIST,                      "dhcp6_domain_search", TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP6_SNTP_SERVERS,                     "dhcp6_sntp_servers",  TRUE ),
-	REQ (NM_DHCP_OPTION_DHCP6_FQDN,                             "fqdn_fqdn",           FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP6_MUD_URL,                          "dhcp6_mud_url",       FALSE ),
+    /* Don't request server ID by default; some servers don't reply to
+     * Information Requests that request the Server ID.
+     */
+    REQ(NM_DHCP_OPTION_DHCP6_SERVERID, "dhcp6_server_id", FALSE),
 
-	/* Internal values */
-	REQ (NM_DHCP_OPTION_DHCP6_NM_IP_ADDRESS,                    "ip6_address",         FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP6_NM_PREFIXLEN,                     "ip6_prefixlen",       FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP6_NM_PREFERRED_LIFE,                "preferred_life",      FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP6_NM_MAX_LIFE,                      "max_life",            FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP6_NM_STARTS,                        "starts",              FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP6_NM_LIFE_STARTS,                   "life_starts",         FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP6_NM_RENEW,                         "renew",               FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP6_NM_REBIND,                        "rebind",              FALSE ),
-	REQ (NM_DHCP_OPTION_DHCP6_NM_IAID,                          "iaid",                FALSE ),
+    REQ(NM_DHCP_OPTION_DHCP6_DNS_SERVERS, "dhcp6_name_servers", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP6_DOMAIN_LIST, "dhcp6_domain_search", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP6_SNTP_SERVERS, "dhcp6_sntp_servers", TRUE),
+    REQ(NM_DHCP_OPTION_DHCP6_FQDN, "fqdn_fqdn", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP6_MUD_URL, "dhcp6_mud_url", FALSE),
 
-	{ 0 }
-};
+    /* Internal values */
+    REQ(NM_DHCP_OPTION_DHCP6_NM_IP_ADDRESS, "ip6_address", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP6_NM_PREFIXLEN, "ip6_prefixlen", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP6_NM_PREFERRED_LIFE, "preferred_life", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP6_NM_MAX_LIFE, "max_life", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP6_NM_STARTS, "starts", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP6_NM_LIFE_STARTS, "life_starts", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP6_NM_RENEW, "renew", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP6_NM_REBIND, "rebind", FALSE),
+    REQ(NM_DHCP_OPTION_DHCP6_NM_IAID, "iaid", FALSE),
 
+    {0}};
 
 const char *
-nm_dhcp_option_request_string (const NMDhcpOption *requests, guint option)
+nm_dhcp_option_request_string(const NMDhcpOption *requests, guint option)
 {
-	guint i = 0;
+    guint i = 0;
 
-	while (requests[i].name) {
-		if (requests[i].option_num == option)
-			return requests[i].name + NM_STRLEN (REQPREFIX);
-		i++;
-	}
+    while (requests[i].name) {
+        if (requests[i].option_num == option)
+            return requests[i].name + NM_STRLEN(REQPREFIX);
+        i++;
+    }
 
-	/* Option should always be found */
-	nm_assert_not_reached ();
-	return NULL;
+    /* Option should always be found */
+    nm_assert_not_reached();
+    return NULL;
 }
 
 void
-nm_dhcp_option_take_option (GHashTable *options,
-             const NMDhcpOption *requests,
-             guint option,
-             char *value)
+nm_dhcp_option_take_option(GHashTable *        options,
+                           const NMDhcpOption *requests,
+                           guint               option,
+                           char *              value)
 {
-	nm_assert (options);
-	nm_assert (requests);
-	nm_assert (value);
-	nm_assert (g_utf8_validate (value, -1, NULL));
+    nm_assert(options);
+    nm_assert(requests);
+    nm_assert(value);
+    nm_assert(g_utf8_validate(value, -1, NULL));
 
-	g_hash_table_insert (options,
-	                     (gpointer) nm_dhcp_option_request_string (requests, option),
-	                     value);
+    g_hash_table_insert(options, (gpointer) nm_dhcp_option_request_string(requests, option), value);
 }
 
 void
-nm_dhcp_option_add_option (GHashTable *options, const NMDhcpOption *requests, guint option, const char *value)
+nm_dhcp_option_add_option(GHashTable *        options,
+                          const NMDhcpOption *requests,
+                          guint               option,
+                          const char *        value)
 {
-	if (options)
-		nm_dhcp_option_take_option (options, requests, option, g_strdup (value));
+    if (options)
+        nm_dhcp_option_take_option(options, requests, option, g_strdup(value));
 }
 
 void
-nm_dhcp_option_add_option_u64 (GHashTable *options, const NMDhcpOption *requests, guint option, guint64 value)
+nm_dhcp_option_add_option_u64(GHashTable *        options,
+                              const NMDhcpOption *requests,
+                              guint               option,
+                              guint64             value)
 {
-	if (options)
-		nm_dhcp_option_take_option (options, requests, option, g_strdup_printf ("%" G_GUINT64_FORMAT, value));
+    if (options)
+        nm_dhcp_option_take_option(options,
+                                   requests,
+                                   option,
+                                   g_strdup_printf("%" G_GUINT64_FORMAT, value));
 }
 
 void
-nm_dhcp_option_add_requests_to_options (GHashTable *options, const NMDhcpOption *requests)
+nm_dhcp_option_add_requests_to_options(GHashTable *options, const NMDhcpOption *requests)
 {
-	guint i;
+    guint i;
 
-	if (!options)
-		return;
+    if (!options)
+        return;
 
-	for (i = 0; requests[i].name; i++) {
-		if (requests[i].include)
-			g_hash_table_insert (options, (gpointer) requests[i].name, g_strdup ("1"));
-	}
+    for (i = 0; requests[i].name; i++) {
+        if (requests[i].include)
+            g_hash_table_insert(options, (gpointer) requests[i].name, g_strdup("1"));
+    }
 }
 
 GHashTable *
-nm_dhcp_option_create_options_dict (void)
+nm_dhcp_option_create_options_dict(void)
 {
-	return g_hash_table_new_full (nm_str_hash, g_str_equal, NULL, g_free);
+    return g_hash_table_new_full(nm_str_hash, g_str_equal, NULL, g_free);
 }
-
diff --git a/src/dhcp/nm-dhcp-options.h b/src/dhcp/nm-dhcp-options.h
index bc3df5ac..6c867c40 100644
--- a/src/dhcp/nm-dhcp-options.h
+++ b/src/dhcp/nm-dhcp-options.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-2.1+
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /*
  * Copyright (C) 2019 Red Hat, Inc.
  */
@@ -7,189 +7,199 @@
 #define __NM_DHCP_OPTIONS_H__
 
 typedef enum {
-	NM_DHCP_OPTION_DHCP4_PAD                            = 0,
-	NM_DHCP_OPTION_DHCP4_SUBNET_MASK                    = 1,
-	NM_DHCP_OPTION_DHCP4_TIME_OFFSET                    = 2,
-	NM_DHCP_OPTION_DHCP4_ROUTER                         = 3,
-	NM_DHCP_OPTION_DHCP4_TIME_SERVERS                   = 4,
-	NM_DHCP_OPTION_DHCP4_IEN116_NAME_SERVERS            = 5,
-	NM_DHCP_OPTION_DHCP4_DOMAIN_NAME_SERVER             = 6,
-	NM_DHCP_OPTION_DHCP4_LOG_SERVERS                    = 7,
-	NM_DHCP_OPTION_DHCP4_COOKIE_SERVERS                 = 8,
-	NM_DHCP_OPTION_DHCP4_LPR_SERVERS                    = 9,
-	NM_DHCP_OPTION_DHCP4_IMPRESS_SERVERS                = 10,
-	NM_DHCP_OPTION_DHCP4_RESOURCE_LOCATION_SERVERS      = 11,
-	NM_DHCP_OPTION_DHCP4_HOST_NAME                      = 12,
-	NM_DHCP_OPTION_DHCP4_BOOT_FILE_SIZE                 = 13,
-	NM_DHCP_OPTION_DHCP4_MERIT_DUMP                     = 14,
-	NM_DHCP_OPTION_DHCP4_DOMAIN_NAME                    = 15,
-	NM_DHCP_OPTION_DHCP4_SWAP_SERVER                    = 16,
-	NM_DHCP_OPTION_DHCP4_ROOT_PATH                      = 17,
-	NM_DHCP_OPTION_DHCP4_EXTENSIONS_PATH                = 18,
-	NM_DHCP_OPTION_DHCP4_ENABLE_IP_FORWARDING           = 19,
-	NM_DHCP_OPTION_DHCP4_ENABLE_SRC_ROUTING             = 20,
-	NM_DHCP_OPTION_DHCP4_POLICY_FILTER                  = 21,
-	NM_DHCP_OPTION_DHCP4_INTERFACE_MDR                  = 22,
-	NM_DHCP_OPTION_DHCP4_INTERFACE_TTL                  = 23,
-	NM_DHCP_OPTION_DHCP4_INTERFACE_MTU_AGING_TIMEOUT    = 24,
-	NM_DHCP_OPTION_DHCP4_PATH_MTU_PLATEAU_TABLE         = 25,
-	NM_DHCP_OPTION_DHCP4_INTERFACE_MTU                  = 26,
-	NM_DHCP_OPTION_DHCP4_ALL_SUBNETS_LOCAL              = 27,
-	NM_DHCP_OPTION_DHCP4_BROADCAST                      = 28,
-	NM_DHCP_OPTION_DHCP4_PERFORM_MASK_DISCOVERY         = 29,
-	NM_DHCP_OPTION_DHCP4_MASK_SUPPLIER                  = 30,
-	NM_DHCP_OPTION_DHCP4_ROUTER_DISCOVERY               = 31,
-	NM_DHCP_OPTION_DHCP4_ROUTER_SOLICITATION_ADDR       = 32,
-	NM_DHCP_OPTION_DHCP4_STATIC_ROUTE                   = 33,
-	NM_DHCP_OPTION_DHCP4_TRAILER_ENCAPSULATION          = 34,
-	NM_DHCP_OPTION_DHCP4_ARP_CACHE_TIMEOUT              = 35,
-	NM_DHCP_OPTION_DHCP4_IEEE802_3_ENCAPSULATION        = 36,
-	NM_DHCP_OPTION_DHCP4_DEFAULT_TCP_TTL                = 37,
-	NM_DHCP_OPTION_DHCP4_TCP_KEEPALIVE_INTERVAL         = 38,
-	NM_DHCP_OPTION_DHCP4_TCP_KEEPALIVE_GARBAGE          = 39,
-	NM_DHCP_OPTION_DHCP4_NIS_DOMAIN                     = 40,
-	NM_DHCP_OPTION_DHCP4_NIS_SERVERS                    = 41,
-	NM_DHCP_OPTION_DHCP4_NTP_SERVER                     = 42,
-	NM_DHCP_OPTION_DHCP4_VENDOR_SPECIFIC                = 43,
-	NM_DHCP_OPTION_DHCP4_NETBIOS_NAMESERVER             = 44,
-	NM_DHCP_OPTION_DHCP4_NETBIOS_DD_SERVER              = 45,
-	NM_DHCP_OPTION_DHCP4_FONT_SERVERS                   = 48,
-	NM_DHCP_OPTION_DHCP4_X_DISPLAY_MANAGER              = 49,
-	NM_DHCP_OPTION_DHCP4_IP_ADDRESS_LEASE_TIME          = 51,
-	NM_DHCP_OPTION_DHCP4_SERVER_ID                      = 54,
-	NM_DHCP_OPTION_DHCP4_RENEWAL_T1_TIME                = 58,
-	NM_DHCP_OPTION_DHCP4_REBINDING_T2_TIME              = 59,
-	NM_DHCP_OPTION_DHCP4_CLIENT_ID                      = 61,
-	NM_DHCP_OPTION_DHCP4_NWIP_DOMAIN                    = 62,
-	NM_DHCP_OPTION_DHCP4_NWIP_SUBOPTIONS                = 63,
-	NM_DHCP_OPTION_DHCP4_NISPLUS_DOMAIN                 = 64,
-	NM_DHCP_OPTION_DHCP4_NISPLUS_SERVERS                = 65,
-	NM_DHCP_OPTION_DHCP4_TFTP_SERVER_NAME               = 66,
-	NM_DHCP_OPTION_DHCP4_BOOTFILE_NAME                  = 67,
-	NM_DHCP_OPTION_DHCP4_MOBILE_IP_HOME_AGENT           = 68,
-	NM_DHCP_OPTION_DHCP4_SMTP_SERVER                    = 69,
-	NM_DHCP_OPTION_DHCP4_POP_SERVER                     = 70,
-	NM_DHCP_OPTION_DHCP4_NNTP_SERVER                    = 71,
-	NM_DHCP_OPTION_DHCP4_WWW_SERVER                     = 72,
-	NM_DHCP_OPTION_DHCP4_FINGER_SERVER                  = 73,
-	NM_DHCP_OPTION_DHCP4_IRC_SERVER                     = 74,
-	NM_DHCP_OPTION_DHCP4_STREETTALK_SERVER              = 75,
-	NM_DHCP_OPTION_DHCP4_STREETTALK_DIR_ASSIST_SERVER   = 76,
-	NM_DHCP_OPTION_DHCP4_SLP_DIRECTORY_AGENT            = 78,
-	NM_DHCP_OPTION_DHCP4_SLP_SERVICE_SCOPE              = 79,
-	NM_DHCP_OPTION_DHCP4_CLIENT_FQDN                    = 81,
-	NM_DHCP_OPTION_DHCP4_RELAY_AGENT_INFORMATION        = 82,
-	NM_DHCP_OPTION_DHCP4_NDS_SERVERS                    = 85,
-	NM_DHCP_OPTION_DHCP4_NDS_TREE_NAME                  = 86,
-	NM_DHCP_OPTION_DHCP4_NDS_CONTEXT                    = 87,
-	NM_DHCP_OPTION_DHCP4_BCMS_CONTROLLER_NAMES          = 88,
-	NM_DHCP_OPTION_DHCP4_BCMS_CONTROLLER_ADDRESS        = 89,
-	NM_DHCP_OPTION_DHCP4_CLIENT_LAST_TRANSACTION        = 91,
-	NM_DHCP_OPTION_DHCP4_ASSOCIATED_IP                  = 92,
-	NM_DHCP_OPTION_DHCP4_PXE_SYSTEM_TYPE                = 93,
-	NM_DHCP_OPTION_DHCP4_PXE_INTERFACE_ID               = 94,
-	NM_DHCP_OPTION_DHCP4_PXE_CLIENT_ID                  = 97,
-	NM_DHCP_OPTION_DHCP4_UAP_SERVERS                    = 98,
-	NM_DHCP_OPTION_DHCP4_GEOCONF_CIVIC                  = 99,
-	NM_DHCP_OPTION_DHCP4_NEW_TZDB_TIMEZONE              = 101,
-	NM_DHCP_OPTION_DHCP4_NETINFO_SERVER_ADDRESS         = 112,
-	NM_DHCP_OPTION_DHCP4_NETINFO_SERVER_TAG             = 113,
-	NM_DHCP_OPTION_DHCP4_DEFAULT_URL                    = 114,
-	NM_DHCP_OPTION_DHCP4_AUTO_CONFIG                    = 116,
-	NM_DHCP_OPTION_DHCP4_NAME_SERVICE_SEARCH            = 117,
-	NM_DHCP_OPTION_DHCP4_SUBNET_SELECTION               = 118,
-	NM_DHCP_OPTION_DHCP4_DOMAIN_SEARCH_LIST             = 119,
-	NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE         = 121,
-	NM_DHCP_OPTION_DHCP4_VIVCO                          = 124,
-	NM_DHCP_OPTION_DHCP4_VIVSO                          = 125,
-	NM_DHCP_OPTION_DHCP4_PANA_AGENT                     = 136,
-	NM_DHCP_OPTION_DHCP4_V4_LOST                        = 137,
-	NM_DHCP_OPTION_DHCP4_SIP_UA_CS_DOMAINS              = 141,
-	NM_DHCP_OPTION_DHCP4_IPV4_ADDRESS_ANDSF             = 142,
-	NM_DHCP_OPTION_DHCP4_RDNSS_SELECTION                = 146,
-	NM_DHCP_OPTION_DHCP4_TFTP_SERVER_ADDRESS            = 150,
-	NM_DHCP_OPTION_DHCP4_V4_PORTPARAMS                  = 159,
-	NM_DHCP_OPTION_DHCP4_V4_CAPTIVE_PORTAL              = 160,
-	NM_DHCP_OPTION_DHCP4_MUD_URL                        = 161,
-	NM_DHCP_OPTION_DHCP4_LOADER_CONFIGFILE              = 209,
-	NM_DHCP_OPTION_DHCP4_LOADER_PATHPREFIX              = 210,
-	NM_DHCP_OPTION_DHCP4_LOADER_REBOOTTIME              = 211,
-	NM_DHCP_OPTION_DHCP4_OPTION_6RD                     = 212,
-	NM_DHCP_OPTION_DHCP4_V4_ACCESS_DOMAIN               = 213,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_224                    = 224,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_225                    = 225,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_226                    = 226,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_227                    = 227,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_228                    = 228,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_229                    = 229,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_230                    = 230,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_231                    = 231,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_232                    = 232,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_233                    = 233,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_234                    = 234,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_235                    = 235,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_236                    = 236,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_237                    = 237,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_238                    = 238,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_239                    = 239,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_240                    = 240,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_241                    = 241,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_242                    = 242,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_243                    = 243,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_244                    = 244,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_245                    = 245,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_246                    = 246,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_247                    = 247,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_248                    = 248,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_CLASSLESS_STATIC_ROUTE = 249,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_250                    = 250,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_251                    = 251,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY    = 252,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_253                    = 253,
-	NM_DHCP_OPTION_DHCP4_PRIVATE_254                    = 254,
-	NM_DHCP_OPTION_DHCP4_END                            = 255,
-	/* Internal values */
-	NM_DHCP_OPTION_DHCP4_NM_IP_ADDRESS                  = 1024,
-	NM_DHCP_OPTION_DHCP4_NM_EXPIRY                      = 1025,
-	NM_DHCP_OPTION_DHCP4_NM_NEXT_SERVER                 = 1026,
+    NM_DHCP_OPTION_DHCP4_PAD                            = 0,
+    NM_DHCP_OPTION_DHCP4_SUBNET_MASK                    = 1,
+    NM_DHCP_OPTION_DHCP4_TIME_OFFSET                    = 2,
+    NM_DHCP_OPTION_DHCP4_ROUTER                         = 3,
+    NM_DHCP_OPTION_DHCP4_TIME_SERVERS                   = 4,
+    NM_DHCP_OPTION_DHCP4_IEN116_NAME_SERVERS            = 5,
+    NM_DHCP_OPTION_DHCP4_DOMAIN_NAME_SERVER             = 6,
+    NM_DHCP_OPTION_DHCP4_LOG_SERVERS                    = 7,
+    NM_DHCP_OPTION_DHCP4_COOKIE_SERVERS                 = 8,
+    NM_DHCP_OPTION_DHCP4_LPR_SERVERS                    = 9,
+    NM_DHCP_OPTION_DHCP4_IMPRESS_SERVERS                = 10,
+    NM_DHCP_OPTION_DHCP4_RESOURCE_LOCATION_SERVERS      = 11,
+    NM_DHCP_OPTION_DHCP4_HOST_NAME                      = 12,
+    NM_DHCP_OPTION_DHCP4_BOOT_FILE_SIZE                 = 13,
+    NM_DHCP_OPTION_DHCP4_MERIT_DUMP                     = 14,
+    NM_DHCP_OPTION_DHCP4_DOMAIN_NAME                    = 15,
+    NM_DHCP_OPTION_DHCP4_SWAP_SERVER                    = 16,
+    NM_DHCP_OPTION_DHCP4_ROOT_PATH                      = 17,
+    NM_DHCP_OPTION_DHCP4_EXTENSIONS_PATH                = 18,
+    NM_DHCP_OPTION_DHCP4_ENABLE_IP_FORWARDING           = 19,
+    NM_DHCP_OPTION_DHCP4_ENABLE_SRC_ROUTING             = 20,
+    NM_DHCP_OPTION_DHCP4_POLICY_FILTER                  = 21,
+    NM_DHCP_OPTION_DHCP4_INTERFACE_MDR                  = 22,
+    NM_DHCP_OPTION_DHCP4_INTERFACE_TTL                  = 23,
+    NM_DHCP_OPTION_DHCP4_INTERFACE_MTU_AGING_TIMEOUT    = 24,
+    NM_DHCP_OPTION_DHCP4_PATH_MTU_PLATEAU_TABLE         = 25,
+    NM_DHCP_OPTION_DHCP4_INTERFACE_MTU                  = 26,
+    NM_DHCP_OPTION_DHCP4_ALL_SUBNETS_LOCAL              = 27,
+    NM_DHCP_OPTION_DHCP4_BROADCAST                      = 28,
+    NM_DHCP_OPTION_DHCP4_PERFORM_MASK_DISCOVERY         = 29,
+    NM_DHCP_OPTION_DHCP4_MASK_SUPPLIER                  = 30,
+    NM_DHCP_OPTION_DHCP4_ROUTER_DISCOVERY               = 31,
+    NM_DHCP_OPTION_DHCP4_ROUTER_SOLICITATION_ADDR       = 32,
+    NM_DHCP_OPTION_DHCP4_STATIC_ROUTE                   = 33,
+    NM_DHCP_OPTION_DHCP4_TRAILER_ENCAPSULATION          = 34,
+    NM_DHCP_OPTION_DHCP4_ARP_CACHE_TIMEOUT              = 35,
+    NM_DHCP_OPTION_DHCP4_IEEE802_3_ENCAPSULATION        = 36,
+    NM_DHCP_OPTION_DHCP4_DEFAULT_TCP_TTL                = 37,
+    NM_DHCP_OPTION_DHCP4_TCP_KEEPALIVE_INTERVAL         = 38,
+    NM_DHCP_OPTION_DHCP4_TCP_KEEPALIVE_GARBAGE          = 39,
+    NM_DHCP_OPTION_DHCP4_NIS_DOMAIN                     = 40,
+    NM_DHCP_OPTION_DHCP4_NIS_SERVERS                    = 41,
+    NM_DHCP_OPTION_DHCP4_NTP_SERVER                     = 42,
+    NM_DHCP_OPTION_DHCP4_VENDOR_SPECIFIC                = 43,
+    NM_DHCP_OPTION_DHCP4_NETBIOS_NAMESERVER             = 44,
+    NM_DHCP_OPTION_DHCP4_NETBIOS_DD_SERVER              = 45,
+    NM_DHCP_OPTION_DHCP4_FONT_SERVERS                   = 48,
+    NM_DHCP_OPTION_DHCP4_X_DISPLAY_MANAGER              = 49,
+    NM_DHCP_OPTION_DHCP4_IP_ADDRESS_LEASE_TIME          = 51,
+    NM_DHCP_OPTION_DHCP4_SERVER_ID                      = 54,
+    NM_DHCP_OPTION_DHCP4_RENEWAL_T1_TIME                = 58,
+    NM_DHCP_OPTION_DHCP4_REBINDING_T2_TIME              = 59,
+    NM_DHCP_OPTION_DHCP4_VENDOR_CLASS_IDENTIFIER        = 60,
+    NM_DHCP_OPTION_DHCP4_CLIENT_ID                      = 61,
+    NM_DHCP_OPTION_DHCP4_NWIP_DOMAIN                    = 62,
+    NM_DHCP_OPTION_DHCP4_NWIP_SUBOPTIONS                = 63,
+    NM_DHCP_OPTION_DHCP4_NISPLUS_DOMAIN                 = 64,
+    NM_DHCP_OPTION_DHCP4_NISPLUS_SERVERS                = 65,
+    NM_DHCP_OPTION_DHCP4_TFTP_SERVER_NAME               = 66,
+    NM_DHCP_OPTION_DHCP4_BOOTFILE_NAME                  = 67,
+    NM_DHCP_OPTION_DHCP4_MOBILE_IP_HOME_AGENT           = 68,
+    NM_DHCP_OPTION_DHCP4_SMTP_SERVER                    = 69,
+    NM_DHCP_OPTION_DHCP4_POP_SERVER                     = 70,
+    NM_DHCP_OPTION_DHCP4_NNTP_SERVER                    = 71,
+    NM_DHCP_OPTION_DHCP4_WWW_SERVER                     = 72,
+    NM_DHCP_OPTION_DHCP4_FINGER_SERVER                  = 73,
+    NM_DHCP_OPTION_DHCP4_IRC_SERVER                     = 74,
+    NM_DHCP_OPTION_DHCP4_STREETTALK_SERVER              = 75,
+    NM_DHCP_OPTION_DHCP4_STREETTALK_DIR_ASSIST_SERVER   = 76,
+    NM_DHCP_OPTION_DHCP4_SLP_DIRECTORY_AGENT            = 78,
+    NM_DHCP_OPTION_DHCP4_SLP_SERVICE_SCOPE              = 79,
+    NM_DHCP_OPTION_DHCP4_CLIENT_FQDN                    = 81,
+    NM_DHCP_OPTION_DHCP4_RELAY_AGENT_INFORMATION        = 82,
+    NM_DHCP_OPTION_DHCP4_NDS_SERVERS                    = 85,
+    NM_DHCP_OPTION_DHCP4_NDS_TREE_NAME                  = 86,
+    NM_DHCP_OPTION_DHCP4_NDS_CONTEXT                    = 87,
+    NM_DHCP_OPTION_DHCP4_BCMS_CONTROLLER_NAMES          = 88,
+    NM_DHCP_OPTION_DHCP4_BCMS_CONTROLLER_ADDRESS        = 89,
+    NM_DHCP_OPTION_DHCP4_CLIENT_LAST_TRANSACTION        = 91,
+    NM_DHCP_OPTION_DHCP4_ASSOCIATED_IP                  = 92,
+    NM_DHCP_OPTION_DHCP4_PXE_SYSTEM_TYPE                = 93,
+    NM_DHCP_OPTION_DHCP4_PXE_INTERFACE_ID               = 94,
+    NM_DHCP_OPTION_DHCP4_PXE_CLIENT_ID                  = 97,
+    NM_DHCP_OPTION_DHCP4_UAP_SERVERS                    = 98,
+    NM_DHCP_OPTION_DHCP4_GEOCONF_CIVIC                  = 99,
+    NM_DHCP_OPTION_DHCP4_NEW_TZDB_TIMEZONE              = 101,
+    NM_DHCP_OPTION_DHCP4_NETINFO_SERVER_ADDRESS         = 112,
+    NM_DHCP_OPTION_DHCP4_NETINFO_SERVER_TAG             = 113,
+    NM_DHCP_OPTION_DHCP4_DEFAULT_URL                    = 114,
+    NM_DHCP_OPTION_DHCP4_AUTO_CONFIG                    = 116,
+    NM_DHCP_OPTION_DHCP4_NAME_SERVICE_SEARCH            = 117,
+    NM_DHCP_OPTION_DHCP4_SUBNET_SELECTION               = 118,
+    NM_DHCP_OPTION_DHCP4_DOMAIN_SEARCH_LIST             = 119,
+    NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE         = 121,
+    NM_DHCP_OPTION_DHCP4_VIVCO                          = 124,
+    NM_DHCP_OPTION_DHCP4_VIVSO                          = 125,
+    NM_DHCP_OPTION_DHCP4_PANA_AGENT                     = 136,
+    NM_DHCP_OPTION_DHCP4_V4_LOST                        = 137,
+    NM_DHCP_OPTION_DHCP4_SIP_UA_CS_DOMAINS              = 141,
+    NM_DHCP_OPTION_DHCP4_IPV4_ADDRESS_ANDSF             = 142,
+    NM_DHCP_OPTION_DHCP4_RDNSS_SELECTION                = 146,
+    NM_DHCP_OPTION_DHCP4_TFTP_SERVER_ADDRESS            = 150,
+    NM_DHCP_OPTION_DHCP4_V4_PORTPARAMS                  = 159,
+    NM_DHCP_OPTION_DHCP4_V4_CAPTIVE_PORTAL              = 160,
+    NM_DHCP_OPTION_DHCP4_MUD_URL                        = 161,
+    NM_DHCP_OPTION_DHCP4_LOADER_CONFIGFILE              = 209,
+    NM_DHCP_OPTION_DHCP4_LOADER_PATHPREFIX              = 210,
+    NM_DHCP_OPTION_DHCP4_LOADER_REBOOTTIME              = 211,
+    NM_DHCP_OPTION_DHCP4_OPTION_6RD                     = 212,
+    NM_DHCP_OPTION_DHCP4_V4_ACCESS_DOMAIN               = 213,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_224                    = 224,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_225                    = 225,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_226                    = 226,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_227                    = 227,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_228                    = 228,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_229                    = 229,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_230                    = 230,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_231                    = 231,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_232                    = 232,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_233                    = 233,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_234                    = 234,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_235                    = 235,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_236                    = 236,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_237                    = 237,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_238                    = 238,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_239                    = 239,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_240                    = 240,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_241                    = 241,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_242                    = 242,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_243                    = 243,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_244                    = 244,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_245                    = 245,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_246                    = 246,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_247                    = 247,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_248                    = 248,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_CLASSLESS_STATIC_ROUTE = 249,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_250                    = 250,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_251                    = 251,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_PROXY_AUTODISCOVERY    = 252,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_253                    = 253,
+    NM_DHCP_OPTION_DHCP4_PRIVATE_254                    = 254,
+    NM_DHCP_OPTION_DHCP4_END                            = 255,
+    /* Internal values */
+    NM_DHCP_OPTION_DHCP4_NM_IP_ADDRESS  = 1024,
+    NM_DHCP_OPTION_DHCP4_NM_EXPIRY      = 1025,
+    NM_DHCP_OPTION_DHCP4_NM_NEXT_SERVER = 1026,
 } NMDhcpOptionDhcp4Options;
 
 typedef enum {
-	NM_DHCP_OPTION_DHCP6_CLIENTID          = 1,
-	NM_DHCP_OPTION_DHCP6_SERVERID          = 2,
-	NM_DHCP_OPTION_DHCP6_DNS_SERVERS       = 23,
-	NM_DHCP_OPTION_DHCP6_DOMAIN_LIST       = 24,
-	NM_DHCP_OPTION_DHCP6_SNTP_SERVERS      = 31,
-	NM_DHCP_OPTION_DHCP6_FQDN              = 39,
-	NM_DHCP_OPTION_DHCP6_MUD_URL           = 112,
+    NM_DHCP_OPTION_DHCP6_CLIENTID     = 1,
+    NM_DHCP_OPTION_DHCP6_SERVERID     = 2,
+    NM_DHCP_OPTION_DHCP6_DNS_SERVERS  = 23,
+    NM_DHCP_OPTION_DHCP6_DOMAIN_LIST  = 24,
+    NM_DHCP_OPTION_DHCP6_SNTP_SERVERS = 31,
+    NM_DHCP_OPTION_DHCP6_FQDN         = 39,
+    NM_DHCP_OPTION_DHCP6_MUD_URL      = 112,
 
-	/* Internal values */
-	NM_DHCP_OPTION_DHCP6_NM_IP_ADDRESS     = 1026,
-	NM_DHCP_OPTION_DHCP6_NM_PREFIXLEN      = 1027,
-	NM_DHCP_OPTION_DHCP6_NM_PREFERRED_LIFE = 1028,
-	NM_DHCP_OPTION_DHCP6_NM_MAX_LIFE       = 1029,
-	NM_DHCP_OPTION_DHCP6_NM_STARTS         = 1030,
-	NM_DHCP_OPTION_DHCP6_NM_LIFE_STARTS    = 1031,
-	NM_DHCP_OPTION_DHCP6_NM_RENEW          = 1032,
-	NM_DHCP_OPTION_DHCP6_NM_REBIND         = 1033,
-	NM_DHCP_OPTION_DHCP6_NM_IAID           = 1034,
+    /* Internal values */
+    NM_DHCP_OPTION_DHCP6_NM_IP_ADDRESS     = 1026,
+    NM_DHCP_OPTION_DHCP6_NM_PREFIXLEN      = 1027,
+    NM_DHCP_OPTION_DHCP6_NM_PREFERRED_LIFE = 1028,
+    NM_DHCP_OPTION_DHCP6_NM_MAX_LIFE       = 1029,
+    NM_DHCP_OPTION_DHCP6_NM_STARTS         = 1030,
+    NM_DHCP_OPTION_DHCP6_NM_LIFE_STARTS    = 1031,
+    NM_DHCP_OPTION_DHCP6_NM_RENEW          = 1032,
+    NM_DHCP_OPTION_DHCP6_NM_REBIND         = 1033,
+    NM_DHCP_OPTION_DHCP6_NM_IAID           = 1034,
 
 } NMDhcpOptionDhcp6Options;
 
 typedef struct {
-	const char *name;
-	uint16_t option_num;
-	bool include;
+    const char *name;
+    uint16_t    option_num;
+    bool        include;
 } NMDhcpOption;
 
 extern const NMDhcpOption _nm_dhcp_option_dhcp4_options[];
 extern const NMDhcpOption _nm_dhcp_option_dhcp6_options[];
 
-const char *nm_dhcp_option_request_string (const NMDhcpOption *requests, guint option);
-void nm_dhcp_option_take_option (GHashTable *options, const NMDhcpOption *requests, guint option, char *value);
-void nm_dhcp_option_add_option (GHashTable *options, const NMDhcpOption *requests, guint option, const char *value);
-void nm_dhcp_option_add_option_u64 (GHashTable *options, const NMDhcpOption *requests, guint option, guint64 value);
-void nm_dhcp_option_add_requests_to_options (GHashTable *options, const NMDhcpOption *requests);
-GHashTable *nm_dhcp_option_create_options_dict (void);
+const char *nm_dhcp_option_request_string(const NMDhcpOption *requests, guint option);
+void        nm_dhcp_option_take_option(GHashTable *        options,
+                                       const NMDhcpOption *requests,
+                                       guint               option,
+                                       char *              value);
+void        nm_dhcp_option_add_option(GHashTable *        options,
+                                      const NMDhcpOption *requests,
+                                      guint               option,
+                                      const char *        value);
+void        nm_dhcp_option_add_option_u64(GHashTable *        options,
+                                          const NMDhcpOption *requests,
+                                          guint               option,
+                                          guint64             value);
+void nm_dhcp_option_add_requests_to_options(GHashTable *options, const NMDhcpOption *requests);
+GHashTable *nm_dhcp_option_create_options_dict(void);
 
 #endif /* __NM_DHCP_OPTIONS_H__ */
diff --git a/src/dhcp/nm-dhcp-systemd.c b/src/dhcp/nm-dhcp-systemd.c
index 737faad9..f9297223 100644
--- a/src/dhcp/nm-dhcp-systemd.c
+++ b/src/dhcp/nm-dhcp-systemd.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-2.1+
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /*
  * Copyright (C) 2014 Red Hat, Inc.
  */
@@ -28,1094 +28,1125 @@
 
 /*****************************************************************************/
 
-#define NM_TYPE_DHCP_SYSTEMD            (nm_dhcp_systemd_get_type ())
-#define NM_DHCP_SYSTEMD(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_DHCP_SYSTEMD, NMDhcpSystemd))
-#define NM_DHCP_SYSTEMD_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_DHCP_SYSTEMD, NMDhcpSystemdClass))
-#define NM_IS_DHCP_SYSTEMD(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_DHCP_SYSTEMD))
-#define NM_IS_DHCP_SYSTEMD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_DHCP_SYSTEMD))
-#define NM_DHCP_SYSTEMD_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_DHCP_SYSTEMD, NMDhcpSystemdClass))
-
-typedef struct _NMDhcpSystemd NMDhcpSystemd;
+#define NM_TYPE_DHCP_SYSTEMD (nm_dhcp_systemd_get_type())
+#define NM_DHCP_SYSTEMD(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_DHCP_SYSTEMD, NMDhcpSystemd))
+#define NM_DHCP_SYSTEMD_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), NM_TYPE_DHCP_SYSTEMD, NMDhcpSystemdClass))
+#define NM_IS_DHCP_SYSTEMD(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), NM_TYPE_DHCP_SYSTEMD))
+#define NM_IS_DHCP_SYSTEMD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), NM_TYPE_DHCP_SYSTEMD))
+#define NM_DHCP_SYSTEMD_GET_CLASS(obj) \
+    (G_TYPE_INSTANCE_GET_CLASS((obj), NM_TYPE_DHCP_SYSTEMD, NMDhcpSystemdClass))
+
+typedef struct _NMDhcpSystemd      NMDhcpSystemd;
 typedef struct _NMDhcpSystemdClass NMDhcpSystemdClass;
 
-static GType nm_dhcp_systemd_get_type (void);
+static GType nm_dhcp_systemd_get_type(void);
 
 /*****************************************************************************/
 
 typedef struct {
-	sd_dhcp_client *client4;
-	sd_dhcp6_client *client6;
-	char *lease_file;
+    sd_dhcp_client * client4;
+    sd_dhcp6_client *client6;
+    char *           lease_file;
 
-	guint request_count;
+    guint request_count;
 
-	bool privacy:1;
+    bool privacy : 1;
 } NMDhcpSystemdPrivate;
 
 struct _NMDhcpSystemd {
-	NMDhcpClient parent;
-	NMDhcpSystemdPrivate _priv;
+    NMDhcpClient         parent;
+    NMDhcpSystemdPrivate _priv;
 };
 
 struct _NMDhcpSystemdClass {
-	NMDhcpClientClass parent;
+    NMDhcpClientClass parent;
 };
 
-G_DEFINE_TYPE (NMDhcpSystemd, nm_dhcp_systemd, NM_TYPE_DHCP_CLIENT)
+G_DEFINE_TYPE(NMDhcpSystemd, nm_dhcp_systemd, NM_TYPE_DHCP_CLIENT)
 
-#define NM_DHCP_SYSTEMD_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDhcpSystemd, NM_IS_DHCP_SYSTEMD)
+#define NM_DHCP_SYSTEMD_GET_PRIVATE(self) _NM_GET_PRIVATE(self, NMDhcpSystemd, NM_IS_DHCP_SYSTEMD)
 
 /*****************************************************************************/
 
 static NMIP4Config *
-lease_to_ip4_config (NMDedupMultiIndex *multi_idx,
-                     const char *iface,
-                     int ifindex,
-                     sd_dhcp_lease *lease,
-                     guint32 route_table,
-                     guint32 route_metric,
-                     GHashTable **out_options,
-                     GError **error)
+lease_to_ip4_config(NMDedupMultiIndex *multi_idx,
+                    const char *       iface,
+                    int                ifindex,
+                    sd_dhcp_lease *    lease,
+                    guint32            route_table,
+                    guint32            route_metric,
+                    GHashTable **      out_options,
+                    GError **          error)
 {
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	gs_unref_hashtable GHashTable *options = NULL;
-	const struct in_addr *addr_list;
-	char addr_str[NM_UTILS_INET_ADDRSTRLEN];
-	const char *s;
-	nm_auto_free_gstring GString *str = NULL;
-	gs_free sd_dhcp_route **routes = NULL;
-	const char *const*search_domains = NULL;
-	guint16 mtu;
-	int i, num;
-	const void *data;
-	gsize data_len;
-	gboolean metered = FALSE;
-	gboolean has_router_from_classless = FALSE;
-	gboolean has_classless_route = FALSE;
-	gboolean has_static_route = FALSE;
-	const gint32 ts = nm_utils_get_monotonic_timestamp_sec ();
-	gint64 ts_time = time (NULL);
-	struct in_addr a_address;
-	struct in_addr a_netmask;
-	struct in_addr a_next_server;
-	struct in_addr server_id;
-	struct in_addr broadcast;
-	const struct in_addr *a_router;
-	guint32 a_plen;
-	guint32 a_lifetime;
-	guint32 renewal;
-	guint32 rebinding;
-	gs_free nm_sd_dhcp_option *private_options = NULL;
-
-	nm_assert (lease != NULL);
-
-	if (sd_dhcp_lease_get_address (lease, &a_address) < 0) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "could not get address from lease");
-		return NULL;
-	}
-
-	if (sd_dhcp_lease_get_netmask (lease, &a_netmask) < 0) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "could not get netmask from lease");
-		return NULL;
-	}
-
-	if (sd_dhcp_lease_get_lifetime (lease, &a_lifetime) < 0) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "could not get lifetime from lease");
-		return NULL;
-	}
-
-	ip4_config = nm_ip4_config_new (multi_idx, ifindex);
-
-	options = out_options ? nm_dhcp_option_create_options_dict () : NULL;
-
-	_nm_utils_inet4_ntop (a_address.s_addr, addr_str);
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_NM_IP_ADDRESS,
-	                           addr_str);
-
-	a_plen = nm_utils_ip4_netmask_to_prefix (a_netmask.s_addr);
-	nm_dhcp_option_add_option (options,
-	                           _nm_dhcp_option_dhcp4_options,
-	                           NM_DHCP_OPTION_DHCP4_SUBNET_MASK,
-	                           _nm_utils_inet4_ntop (a_netmask.s_addr, addr_str));
-
-	nm_dhcp_option_add_option_u64 (options,
-	                               _nm_dhcp_option_dhcp4_options,
-	                               NM_DHCP_OPTION_DHCP4_IP_ADDRESS_LEASE_TIME,
-	                               a_lifetime);
-	nm_dhcp_option_add_option_u64 (options,
-	                               _nm_dhcp_option_dhcp4_options,
-	                               NM_DHCP_OPTION_DHCP4_NM_EXPIRY,
-	                               (guint64) (ts_time + a_lifetime));
-
-	if (sd_dhcp_lease_get_next_server (lease, &a_next_server) == 0) {
-		_nm_utils_inet4_ntop (a_next_server.s_addr, addr_str);
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_NM_NEXT_SERVER,
-		                           addr_str);
-	}
-
-	nm_ip4_config_add_address (ip4_config,
-	                           &((const NMPlatformIP4Address) {
-	                               .address      = a_address.s_addr,
-	                               .peer_address = a_address.s_addr,
-	                               .plen         = a_plen,
-	                               .addr_source  = NM_IP_CONFIG_SOURCE_DHCP,
-	                               .timestamp    = ts,
-	                               .lifetime     = a_lifetime,
-	                               .preferred    = a_lifetime,
-	                           }));
-
-	if (sd_dhcp_lease_get_server_identifier (lease, &server_id) >= 0) {
-		_nm_utils_inet4_ntop (server_id.s_addr, addr_str);
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_SERVER_ID,
-		                           addr_str);
-	}
-
-	if (sd_dhcp_lease_get_broadcast (lease, &broadcast) >= 0) {
-		_nm_utils_inet4_ntop (broadcast.s_addr, addr_str);
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_BROADCAST,
-		                           addr_str);
-	}
-
-	num = sd_dhcp_lease_get_dns (lease, &addr_list);
-	if (num > 0) {
-		nm_gstring_prepare (&str);
-		for (i = 0; i < num; i++) {
-			_nm_utils_inet4_ntop (addr_list[i].s_addr, addr_str);
-			g_string_append (nm_gstring_add_space_delimiter (str), addr_str);
-
-			if (   addr_list[i].s_addr == 0
-			    || nm_ip4_addr_is_localhost (addr_list[i].s_addr)) {
-				/* Skip localhost addresses, like also networkd does.
-				 * See https://github.com/systemd/systemd/issues/4524. */
-				continue;
-			}
-			nm_ip4_config_add_nameserver (ip4_config, addr_list[i].s_addr);
-		}
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_DOMAIN_NAME_SERVER,
-		                           str->str);
-	}
-
-	num = sd_dhcp_lease_get_search_domains (lease, (char ***) &search_domains);
-	if (num > 0) {
-		nm_gstring_prepare (&str);
-		for (i = 0; i < num; i++) {
-			g_string_append (nm_gstring_add_space_delimiter (str), search_domains[i]);
-			nm_ip4_config_add_search (ip4_config, search_domains[i]);
-		}
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_DOMAIN_SEARCH_LIST,
-		                           str->str);
-	}
-
-	if (sd_dhcp_lease_get_domainname (lease, &s) >= 0) {
-		gs_strfreev char **domains = NULL;
-		char **d;
-
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_DOMAIN_NAME,
-		                           s);
-
-		/* Multiple domains sometimes stuffed into option 15 "Domain Name".
-		 * As systemd escapes such characters, split them at \\032. */
-		domains = g_strsplit (s, "\\032", 0);
-		for (d = domains; *d; d++)
-			nm_ip4_config_add_domain (ip4_config, *d);
-	}
-
-	if (sd_dhcp_lease_get_hostname (lease, &s) >= 0) {
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_HOST_NAME,
-		                           s);
-	}
-
-	num = sd_dhcp_lease_get_routes (lease, &routes);
-	if (num > 0) {
-		nm_auto_free_gstring GString *str_classless = NULL;
-		nm_auto_free_gstring GString *str_static = NULL;
-		guint32 default_route_metric = route_metric;
-
-		for (i = 0; i < num; i++) {
-			switch (sd_dhcp_route_get_option (routes[i])) {
-			case NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE:
-				has_classless_route = TRUE;
-				break;
-			case NM_DHCP_OPTION_DHCP4_STATIC_ROUTE:
-				has_static_route = TRUE;
-				break;
-			}
-		}
-
-		if (has_classless_route)
-			str_classless = g_string_sized_new (30);
-		if (has_static_route)
-			str_static = g_string_sized_new (30);
-
-		for (i = 0; i < num; i++) {
-			char network_net_str[NM_UTILS_INET_ADDRSTRLEN];
-			char gateway_str[NM_UTILS_INET_ADDRSTRLEN];
-			guint8 r_plen;
-			struct in_addr r_network;
-			struct in_addr r_gateway;
-			in_addr_t network_net;
-			int option;
-			guint32 m;
-
-			option = sd_dhcp_route_get_option (routes[i]);
-			if (!NM_IN_SET (option, NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE,
-			                        NM_DHCP_OPTION_DHCP4_STATIC_ROUTE))
-				continue;
-
-			if (sd_dhcp_route_get_destination (routes[i], &r_network) < 0)
-				continue;
-			if (   sd_dhcp_route_get_destination_prefix_length (routes[i], &r_plen) < 0
-			    || r_plen > 32)
-				continue;
-			if (sd_dhcp_route_get_gateway (routes[i], &r_gateway) < 0)
-				continue;
-
-			network_net = nm_utils_ip4_address_clear_host_address (r_network.s_addr,
-			                                                       r_plen);
-			_nm_utils_inet4_ntop (network_net, network_net_str);
-			_nm_utils_inet4_ntop (r_gateway.s_addr, gateway_str);
-
-			g_string_append_printf (nm_gstring_add_space_delimiter (  option == NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE
-			                                                        ? str_classless
-			                                                        : str_static),
-			                        "%s/%d %s",
-			                        network_net_str,
-			                        (int) r_plen,
-			                        gateway_str);
-
-			if (   option == NM_DHCP_OPTION_DHCP4_STATIC_ROUTE
-			    && has_classless_route) {
-				/* RFC 3443: if the DHCP server returns both a Classless Static Routes
-				 * option and a Static Routes option, the DHCP client MUST ignore the
-				 * Static Routes option. */
-				continue;
-			}
-
-			if (   r_plen == 0
-			    && option == NM_DHCP_OPTION_DHCP4_STATIC_ROUTE) {
-				/* for option 33 (static route), RFC 2132 says:
-				 *
-				 * The default route (0.0.0.0) is an illegal destination for a static
-				 * route. */
-				continue;
-			}
-
-			if (r_plen == 0) {
-				/* if there are multiple default routes, we add them with differing
-				 * metrics. */
-				m = default_route_metric;
-				if (default_route_metric < G_MAXUINT32)
-					default_route_metric++;
-
-				has_router_from_classless = TRUE;
-			} else
-				m = route_metric;
-
-			nm_ip4_config_add_route (ip4_config,
-			                         &((const NMPlatformIP4Route) {
-			                             .network       = network_net,
-			                             .plen          = r_plen,
-			                             .gateway       = r_gateway.s_addr,
-			                             .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
-			                             .metric        = m,
-			                             .table_coerced = nm_platform_route_table_coerce (route_table),
-			                         }),
-			                         NULL);
-		}
-
-		if (str_classless && str_classless->len > 0)
-			nm_dhcp_option_add_option (options,
-		                                   _nm_dhcp_option_dhcp4_options,
-		                                   NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE,
-		                                   str_classless->str);
-		if (str_static && str_static->len > 0)
-			nm_dhcp_option_add_option (options,
-			                           _nm_dhcp_option_dhcp4_options,
-			                           NM_DHCP_OPTION_DHCP4_STATIC_ROUTE,
-			                           str_static->str);
-	}
-
-	num = sd_dhcp_lease_get_router (lease, &a_router);
-	if (num > 0) {
-		guint32 default_route_metric = route_metric;
-
-		nm_gstring_prepare (&str);
-		for (i = 0; i < num; i++) {
-			guint32 m;
-
-			s = _nm_utils_inet4_ntop (a_router[i].s_addr, addr_str);
-			g_string_append (nm_gstring_add_space_delimiter (str), s);
-
-			if (a_router[i].s_addr == 0) {
-				/* silently skip 0.0.0.0 */
-				continue;
-			}
-
-			if (has_router_from_classless) {
-				/* If the DHCP server returns both a Classless Static Routes option and a
-				 * Router option, the DHCP client MUST ignore the Router option [RFC 3442].
-				 *
-				 * Be more lenient and ignore the Router option only if Classless Static
-				 * Routes contain a default gateway (as other DHCP backends do).
-				 */
-				continue;
-			}
-
-			/* if there are multiple default routes, we add them with differing
-			 * metrics. */
-			m = default_route_metric;
-			if (default_route_metric < G_MAXUINT32)
-				default_route_metric++;
-
-			nm_ip4_config_add_route (ip4_config,
-			                         &((const NMPlatformIP4Route) {
-			                             .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
-			                             .gateway       = a_router[i].s_addr,
-			                             .table_coerced = nm_platform_route_table_coerce (route_table),
-			                             .metric        = m,
-			                         }),
-			                         NULL);
-		}
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_ROUTER,
-		                           str->str);
-	}
-
-	if (   sd_dhcp_lease_get_mtu (lease, &mtu) >= 0
-	    && mtu) {
-		nm_dhcp_option_add_option_u64 (options,
-		                               _nm_dhcp_option_dhcp4_options,
-		                               NM_DHCP_OPTION_DHCP4_INTERFACE_MTU,
-		                               mtu);
-		nm_ip4_config_set_mtu (ip4_config, mtu, NM_IP_CONFIG_SOURCE_DHCP);
-	}
-
-	num = sd_dhcp_lease_get_ntp (lease, &addr_list);
-	if (num > 0) {
-		nm_gstring_prepare (&str);
-		for (i = 0; i < num; i++) {
-			_nm_utils_inet4_ntop (addr_list[i].s_addr, addr_str);
-			g_string_append (nm_gstring_add_space_delimiter (str), addr_str);
-		}
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_NTP_SERVER,
-		                           str->str);
-	}
-
-	if (sd_dhcp_lease_get_root_path (lease, &s) >= 0) {
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_ROOT_PATH,
-		                           s);
-	}
-
-	if (sd_dhcp_lease_get_t1 (lease, &renewal) >= 0) {
-		nm_dhcp_option_add_option_u64 (options,
-		                               _nm_dhcp_option_dhcp4_options,
-		                               NM_DHCP_OPTION_DHCP4_RENEWAL_T1_TIME,
-		                               renewal);
-	}
-
-	if (sd_dhcp_lease_get_t2 (lease, &rebinding) >= 0) {
-		nm_dhcp_option_add_option_u64 (options,
-		                               _nm_dhcp_option_dhcp4_options,
-		                               NM_DHCP_OPTION_DHCP4_REBINDING_T2_TIME,
-		                               rebinding);
-	}
-
-	if (sd_dhcp_lease_get_timezone (lease, &s) >= 0) {
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp4_options,
-		                           NM_DHCP_OPTION_DHCP4_NEW_TZDB_TIMEZONE,
-		                           s);
-	}
-
-	if (sd_dhcp_lease_get_vendor_specific (lease, &data, &data_len) >= 0)
-		metered = !!memmem (data, data_len, "ANDROID_METERED", NM_STRLEN ("ANDROID_METERED"));
-	nm_ip4_config_set_metered (ip4_config, metered);
-
-	num =  nm_sd_dhcp_lease_get_private_options (lease, &private_options);
-	if (num > 0) {
-		for (i = 0; i < num; i++) {
-			char *option_string;
-
-			option_string = nm_utils_bin2hexstr_full (private_options[i].data,
-			                                          private_options[i].data_len,
-			                                          ':', FALSE, NULL);
-			if (!options) {
-				g_free (option_string);
-				continue;
-			}
-			nm_dhcp_option_take_option (options,
-			                            _nm_dhcp_option_dhcp4_options,
-			                            private_options[i].code,
-			                            option_string);
-		}
-	}
-	NM_SET_OUT (out_options, g_steal_pointer (&options));
-	return g_steal_pointer (&ip4_config);
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    gs_unref_hashtable GHashTable *options  = NULL;
+    const struct in_addr *         addr_list;
+    char                           addr_str[NM_UTILS_INET_ADDRSTRLEN];
+    const char *                   s;
+    nm_auto_free_gstring GString *str      = NULL;
+    gs_free sd_dhcp_route **routes         = NULL;
+    const char *const *     search_domains = NULL;
+    guint16                 mtu;
+    int                     i, num;
+    const void *            data;
+    gsize                   data_len;
+    gboolean                metered                   = FALSE;
+    gboolean                has_router_from_classless = FALSE;
+    gboolean                has_classless_route       = FALSE;
+    gboolean                has_static_route          = FALSE;
+    const gint32            ts                        = nm_utils_get_monotonic_timestamp_sec();
+    gint64                  ts_time                   = time(NULL);
+    struct in_addr          a_address;
+    struct in_addr          a_netmask;
+    struct in_addr          a_next_server;
+    struct in_addr          server_id;
+    struct in_addr          broadcast;
+    const struct in_addr *  a_router;
+    guint32                 a_plen;
+    guint32                 a_lifetime;
+    guint32                 renewal;
+    guint32                 rebinding;
+    gs_free nm_sd_dhcp_option *private_options = NULL;
+
+    nm_assert(lease != NULL);
+
+    if (sd_dhcp_lease_get_address(lease, &a_address) < 0) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_UNKNOWN,
+                                   "could not get address from lease");
+        return NULL;
+    }
+
+    if (sd_dhcp_lease_get_netmask(lease, &a_netmask) < 0) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_UNKNOWN,
+                                   "could not get netmask from lease");
+        return NULL;
+    }
+
+    if (sd_dhcp_lease_get_lifetime(lease, &a_lifetime) < 0) {
+        nm_utils_error_set_literal(error,
+                                   NM_UTILS_ERROR_UNKNOWN,
+                                   "could not get lifetime from lease");
+        return NULL;
+    }
+
+    ip4_config = nm_ip4_config_new(multi_idx, ifindex);
+
+    options = out_options ? nm_dhcp_option_create_options_dict() : NULL;
+
+    _nm_utils_inet4_ntop(a_address.s_addr, addr_str);
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_NM_IP_ADDRESS,
+                              addr_str);
+
+    a_plen = nm_utils_ip4_netmask_to_prefix(a_netmask.s_addr);
+    nm_dhcp_option_add_option(options,
+                              _nm_dhcp_option_dhcp4_options,
+                              NM_DHCP_OPTION_DHCP4_SUBNET_MASK,
+                              _nm_utils_inet4_ntop(a_netmask.s_addr, addr_str));
+
+    nm_dhcp_option_add_option_u64(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_IP_ADDRESS_LEASE_TIME,
+                                  a_lifetime);
+    nm_dhcp_option_add_option_u64(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_NM_EXPIRY,
+                                  (guint64)(ts_time + a_lifetime));
+
+    if (sd_dhcp_lease_get_next_server(lease, &a_next_server) == 0) {
+        _nm_utils_inet4_ntop(a_next_server.s_addr, addr_str);
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_NM_NEXT_SERVER,
+                                  addr_str);
+    }
+
+    nm_ip4_config_add_address(ip4_config,
+                              &((const NMPlatformIP4Address){
+                                  .address      = a_address.s_addr,
+                                  .peer_address = a_address.s_addr,
+                                  .plen         = a_plen,
+                                  .addr_source  = NM_IP_CONFIG_SOURCE_DHCP,
+                                  .timestamp    = ts,
+                                  .lifetime     = a_lifetime,
+                                  .preferred    = a_lifetime,
+                              }));
+
+    if (sd_dhcp_lease_get_server_identifier(lease, &server_id) >= 0) {
+        _nm_utils_inet4_ntop(server_id.s_addr, addr_str);
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_SERVER_ID,
+                                  addr_str);
+    }
+
+    if (sd_dhcp_lease_get_broadcast(lease, &broadcast) >= 0) {
+        _nm_utils_inet4_ntop(broadcast.s_addr, addr_str);
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_BROADCAST,
+                                  addr_str);
+    }
+
+    num = sd_dhcp_lease_get_dns(lease, &addr_list);
+    if (num > 0) {
+        nm_gstring_prepare(&str);
+        for (i = 0; i < num; i++) {
+            _nm_utils_inet4_ntop(addr_list[i].s_addr, addr_str);
+            g_string_append(nm_gstring_add_space_delimiter(str), addr_str);
+
+            if (addr_list[i].s_addr == 0 || nm_ip4_addr_is_localhost(addr_list[i].s_addr)) {
+                /* Skip localhost addresses, like also networkd does.
+                 * See https://github.com/systemd/systemd/issues/4524. */
+                continue;
+            }
+            nm_ip4_config_add_nameserver(ip4_config, addr_list[i].s_addr);
+        }
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_DOMAIN_NAME_SERVER,
+                                  str->str);
+    }
+
+    num = sd_dhcp_lease_get_search_domains(lease, (char ***) &search_domains);
+    if (num > 0) {
+        nm_gstring_prepare(&str);
+        for (i = 0; i < num; i++) {
+            g_string_append(nm_gstring_add_space_delimiter(str), search_domains[i]);
+            nm_ip4_config_add_search(ip4_config, search_domains[i]);
+        }
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_DOMAIN_SEARCH_LIST,
+                                  str->str);
+    }
+
+    if (sd_dhcp_lease_get_domainname(lease, &s) >= 0) {
+        gs_strfreev char **domains = NULL;
+        char **            d;
+
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_DOMAIN_NAME,
+                                  s);
+
+        /* Multiple domains sometimes stuffed into option 15 "Domain Name".
+         * As systemd escapes such characters, split them at \\032. */
+        domains = g_strsplit(s, "\\032", 0);
+        for (d = domains; *d; d++)
+            nm_ip4_config_add_domain(ip4_config, *d);
+    }
+
+    if (sd_dhcp_lease_get_hostname(lease, &s) >= 0) {
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_HOST_NAME,
+                                  s);
+    }
+
+    num = sd_dhcp_lease_get_routes(lease, &routes);
+    if (num > 0) {
+        nm_auto_free_gstring GString *str_classless        = NULL;
+        nm_auto_free_gstring GString *str_static           = NULL;
+        guint32                       default_route_metric = route_metric;
+
+        for (i = 0; i < num; i++) {
+            switch (sd_dhcp_route_get_option(routes[i])) {
+            case NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE:
+                has_classless_route = TRUE;
+                break;
+            case NM_DHCP_OPTION_DHCP4_STATIC_ROUTE:
+                has_static_route = TRUE;
+                break;
+            }
+        }
+
+        if (has_classless_route)
+            str_classless = g_string_sized_new(30);
+        if (has_static_route)
+            str_static = g_string_sized_new(30);
+
+        for (i = 0; i < num; i++) {
+            char           network_net_str[NM_UTILS_INET_ADDRSTRLEN];
+            char           gateway_str[NM_UTILS_INET_ADDRSTRLEN];
+            guint8         r_plen;
+            struct in_addr r_network;
+            struct in_addr r_gateway;
+            in_addr_t      network_net;
+            int            option;
+            guint32        m;
+
+            option = sd_dhcp_route_get_option(routes[i]);
+            if (!NM_IN_SET(option,
+                           NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE,
+                           NM_DHCP_OPTION_DHCP4_STATIC_ROUTE))
+                continue;
+
+            if (sd_dhcp_route_get_destination(routes[i], &r_network) < 0)
+                continue;
+            if (sd_dhcp_route_get_destination_prefix_length(routes[i], &r_plen) < 0 || r_plen > 32)
+                continue;
+            if (sd_dhcp_route_get_gateway(routes[i], &r_gateway) < 0)
+                continue;
+
+            network_net = nm_utils_ip4_address_clear_host_address(r_network.s_addr, r_plen);
+            _nm_utils_inet4_ntop(network_net, network_net_str);
+            _nm_utils_inet4_ntop(r_gateway.s_addr, gateway_str);
+
+            g_string_append_printf(
+                nm_gstring_add_space_delimiter(option == NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE
+                                                   ? str_classless
+                                                   : str_static),
+                "%s/%d %s",
+                network_net_str,
+                (int) r_plen,
+                gateway_str);
+
+            if (option == NM_DHCP_OPTION_DHCP4_STATIC_ROUTE && has_classless_route) {
+                /* RFC 3443: if the DHCP server returns both a Classless Static Routes
+                 * option and a Static Routes option, the DHCP client MUST ignore the
+                 * Static Routes option. */
+                continue;
+            }
+
+            if (r_plen == 0 && option == NM_DHCP_OPTION_DHCP4_STATIC_ROUTE) {
+                /* for option 33 (static route), RFC 2132 says:
+                 *
+                 * The default route (0.0.0.0) is an illegal destination for a static
+                 * route. */
+                continue;
+            }
+
+            if (r_plen == 0) {
+                /* if there are multiple default routes, we add them with differing
+                 * metrics. */
+                m = default_route_metric;
+                if (default_route_metric < G_MAXUINT32)
+                    default_route_metric++;
+
+                has_router_from_classless = TRUE;
+            } else
+                m = route_metric;
+
+            nm_ip4_config_add_route(
+                ip4_config,
+                &((const NMPlatformIP4Route){
+                    .network       = network_net,
+                    .plen          = r_plen,
+                    .gateway       = r_gateway.s_addr,
+                    .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
+                    .metric        = m,
+                    .table_coerced = nm_platform_route_table_coerce(route_table),
+                }),
+                NULL);
+        }
+
+        if (str_classless && str_classless->len > 0)
+            nm_dhcp_option_add_option(options,
+                                      _nm_dhcp_option_dhcp4_options,
+                                      NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE,
+                                      str_classless->str);
+        if (str_static && str_static->len > 0)
+            nm_dhcp_option_add_option(options,
+                                      _nm_dhcp_option_dhcp4_options,
+                                      NM_DHCP_OPTION_DHCP4_STATIC_ROUTE,
+                                      str_static->str);
+    }
+
+    num = sd_dhcp_lease_get_router(lease, &a_router);
+    if (num > 0) {
+        guint32 default_route_metric = route_metric;
+
+        nm_gstring_prepare(&str);
+        for (i = 0; i < num; i++) {
+            guint32 m;
+
+            s = _nm_utils_inet4_ntop(a_router[i].s_addr, addr_str);
+            g_string_append(nm_gstring_add_space_delimiter(str), s);
+
+            if (a_router[i].s_addr == 0) {
+                /* silently skip 0.0.0.0 */
+                continue;
+            }
+
+            if (has_router_from_classless) {
+                /* If the DHCP server returns both a Classless Static Routes option and a
+                 * Router option, the DHCP client MUST ignore the Router option [RFC 3442].
+                 *
+                 * Be more lenient and ignore the Router option only if Classless Static
+                 * Routes contain a default gateway (as other DHCP backends do).
+                 */
+                continue;
+            }
+
+            /* if there are multiple default routes, we add them with differing
+             * metrics. */
+            m = default_route_metric;
+            if (default_route_metric < G_MAXUINT32)
+                default_route_metric++;
+
+            nm_ip4_config_add_route(
+                ip4_config,
+                &((const NMPlatformIP4Route){
+                    .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
+                    .gateway       = a_router[i].s_addr,
+                    .table_coerced = nm_platform_route_table_coerce(route_table),
+                    .metric        = m,
+                }),
+                NULL);
+        }
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_ROUTER,
+                                  str->str);
+    }
+
+    if (sd_dhcp_lease_get_mtu(lease, &mtu) >= 0 && mtu) {
+        nm_dhcp_option_add_option_u64(options,
+                                      _nm_dhcp_option_dhcp4_options,
+                                      NM_DHCP_OPTION_DHCP4_INTERFACE_MTU,
+                                      mtu);
+        nm_ip4_config_set_mtu(ip4_config, mtu, NM_IP_CONFIG_SOURCE_DHCP);
+    }
+
+    num = sd_dhcp_lease_get_ntp(lease, &addr_list);
+    if (num > 0) {
+        nm_gstring_prepare(&str);
+        for (i = 0; i < num; i++) {
+            _nm_utils_inet4_ntop(addr_list[i].s_addr, addr_str);
+            g_string_append(nm_gstring_add_space_delimiter(str), addr_str);
+        }
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_NTP_SERVER,
+                                  str->str);
+    }
+
+    if (sd_dhcp_lease_get_root_path(lease, &s) >= 0) {
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_ROOT_PATH,
+                                  s);
+    }
+
+    if (sd_dhcp_lease_get_t1(lease, &renewal) >= 0) {
+        nm_dhcp_option_add_option_u64(options,
+                                      _nm_dhcp_option_dhcp4_options,
+                                      NM_DHCP_OPTION_DHCP4_RENEWAL_T1_TIME,
+                                      renewal);
+    }
+
+    if (sd_dhcp_lease_get_t2(lease, &rebinding) >= 0) {
+        nm_dhcp_option_add_option_u64(options,
+                                      _nm_dhcp_option_dhcp4_options,
+                                      NM_DHCP_OPTION_DHCP4_REBINDING_T2_TIME,
+                                      rebinding);
+    }
+
+    if (sd_dhcp_lease_get_timezone(lease, &s) >= 0) {
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp4_options,
+                                  NM_DHCP_OPTION_DHCP4_NEW_TZDB_TIMEZONE,
+                                  s);
+    }
+
+    if (sd_dhcp_lease_get_vendor_specific(lease, &data, &data_len) >= 0)
+        metered = !!memmem(data, data_len, "ANDROID_METERED", NM_STRLEN("ANDROID_METERED"));
+    nm_ip4_config_set_metered(ip4_config, metered);
+
+    num = nm_sd_dhcp_lease_get_private_options(lease, &private_options);
+    if (num > 0) {
+        for (i = 0; i < num; i++) {
+            char *option_string;
+
+            option_string = nm_utils_bin2hexstr_full(private_options[i].data,
+                                                     private_options[i].data_len,
+                                                     ':',
+                                                     FALSE,
+                                                     NULL);
+            if (!options) {
+                g_free(option_string);
+                continue;
+            }
+            nm_dhcp_option_take_option(options,
+                                       _nm_dhcp_option_dhcp4_options,
+                                       private_options[i].code,
+                                       option_string);
+        }
+    }
+    NM_SET_OUT(out_options, g_steal_pointer(&options));
+    return g_steal_pointer(&ip4_config);
 }
 
 /*****************************************************************************/
 
 static void
-bound4_handle (NMDhcpSystemd *self, gboolean extended)
+bound4_handle(NMDhcpSystemd *self, gboolean extended)
 {
-	NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
-	const char *iface = nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self));
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	gs_unref_hashtable GHashTable *options = NULL;
-	sd_dhcp_lease *lease = NULL;
-	GError *error = NULL;
-
-	if (   sd_dhcp_client_get_lease (priv->client4, &lease) < 0
-	    || !lease) {
-		_LOGW ("no lease!");
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
-		return;
-	}
-
-	_LOGD ("lease available");
-
-	ip4_config = lease_to_ip4_config (nm_dhcp_client_get_multi_idx (NM_DHCP_CLIENT (self)),
-	                                  iface,
-	                                  nm_dhcp_client_get_ifindex (NM_DHCP_CLIENT (self)),
-	                                  lease,
-	                                  nm_dhcp_client_get_route_table (NM_DHCP_CLIENT (self)),
-	                                  nm_dhcp_client_get_route_metric (NM_DHCP_CLIENT (self)),
-	                                  &options,
-	                                  &error);
-	if (!ip4_config) {
-		_LOGW ("%s", error->message);
-		g_clear_error (&error);
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
-		return;
-	}
-
-	nm_dhcp_option_add_requests_to_options (options, _nm_dhcp_option_dhcp4_options);
-	dhcp_lease_save (lease, priv->lease_file);
-
-	nm_dhcp_client_set_state (NM_DHCP_CLIENT (self),
-	                          extended ? NM_DHCP_STATE_EXTENDED : NM_DHCP_STATE_BOUND,
-	                          NM_IP_CONFIG_CAST (ip4_config),
-	                          options);
+    NMDhcpSystemdPrivate *priv              = NM_DHCP_SYSTEMD_GET_PRIVATE(self);
+    const char *          iface             = nm_dhcp_client_get_iface(NM_DHCP_CLIENT(self));
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    gs_unref_hashtable GHashTable *options  = NULL;
+    sd_dhcp_lease *                lease    = NULL;
+    GError *                       error    = NULL;
+
+    if (sd_dhcp_client_get_lease(priv->client4, &lease) < 0 || !lease) {
+        _LOGW("no lease!");
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(self), NM_DHCP_STATE_FAIL, NULL, NULL);
+        return;
+    }
+
+    _LOGD("lease available");
+
+    ip4_config = lease_to_ip4_config(nm_dhcp_client_get_multi_idx(NM_DHCP_CLIENT(self)),
+                                     iface,
+                                     nm_dhcp_client_get_ifindex(NM_DHCP_CLIENT(self)),
+                                     lease,
+                                     nm_dhcp_client_get_route_table(NM_DHCP_CLIENT(self)),
+                                     nm_dhcp_client_get_route_metric(NM_DHCP_CLIENT(self)),
+                                     &options,
+                                     &error);
+    if (!ip4_config) {
+        _LOGW("%s", error->message);
+        g_clear_error(&error);
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(self), NM_DHCP_STATE_FAIL, NULL, NULL);
+        return;
+    }
+
+    nm_dhcp_option_add_requests_to_options(options, _nm_dhcp_option_dhcp4_options);
+    dhcp_lease_save(lease, priv->lease_file);
+
+    nm_dhcp_client_set_state(NM_DHCP_CLIENT(self),
+                             extended ? NM_DHCP_STATE_EXTENDED : NM_DHCP_STATE_BOUND,
+                             NM_IP_CONFIG_CAST(ip4_config),
+                             options);
 }
 
 static int
-dhcp_event_cb (sd_dhcp_client *client, int event, gpointer user_data)
+dhcp_event_cb(sd_dhcp_client *client, int event, gpointer user_data)
 {
-	NMDhcpSystemd *self = NM_DHCP_SYSTEMD (user_data);
-	NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
-
-	nm_assert (priv->client4 == client);
-
-	_LOGD ("client event %d", event);
-
-	switch (event) {
-	case SD_DHCP_CLIENT_EVENT_EXPIRED:
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_EXPIRE, NULL, NULL);
-		break;
-	case SD_DHCP_CLIENT_EVENT_STOP:
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_FAIL, NULL, NULL);
-		break;
-	case SD_DHCP_CLIENT_EVENT_RENEW:
-	case SD_DHCP_CLIENT_EVENT_IP_CHANGE:
-		bound4_handle (self, TRUE);
-		break;
-	case SD_DHCP_CLIENT_EVENT_IP_ACQUIRE:
-		bound4_handle (self, FALSE);
-		break;
-	case SD_DHCP_CLIENT_EVENT_SELECTING:
-		break;
-	default:
-		_LOGW ("unhandled DHCP event %d", event);
-		break;
-	}
-
-	return 0;
+    NMDhcpSystemd *       self = NM_DHCP_SYSTEMD(user_data);
+    NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE(self);
+    char                  addr_str[INET_ADDRSTRLEN];
+    sd_dhcp_lease *       lease = NULL;
+    struct in_addr        addr;
+    int                   r;
+
+    nm_assert(priv->client4 == client);
+
+    _LOGD("client event %d", event);
+
+    switch (event) {
+    case SD_DHCP_CLIENT_EVENT_EXPIRED:
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(user_data), NM_DHCP_STATE_EXPIRE, NULL, NULL);
+        break;
+    case SD_DHCP_CLIENT_EVENT_STOP:
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(user_data), NM_DHCP_STATE_FAIL, NULL, NULL);
+        break;
+    case SD_DHCP_CLIENT_EVENT_RENEW:
+    case SD_DHCP_CLIENT_EVENT_IP_CHANGE:
+        bound4_handle(self, TRUE);
+        break;
+    case SD_DHCP_CLIENT_EVENT_IP_ACQUIRE:
+        bound4_handle(self, FALSE);
+        break;
+    case SD_DHCP_CLIENT_EVENT_SELECTING:
+        r = sd_dhcp_client_get_lease(priv->client4, &lease);
+        if (r < 0)
+            return r;
+        r = sd_dhcp_lease_get_server_identifier(lease, &addr);
+        if (r < 0)
+            return r;
+        if (nm_dhcp_client_server_id_is_rejected(NM_DHCP_CLIENT(user_data), &addr)) {
+            _LOGD("server-id %s is in the reject-list, ignoring",
+                  nm_utils_inet_ntop(AF_INET, &addr, addr_str));
+            return -ENOMSG;
+        }
+        break;
+    default:
+        _LOGW("unhandled DHCP event %d", event);
+        break;
+    }
+
+    return 0;
 }
 
 static gboolean
-ip4_start (NMDhcpClient *client,
-           const char *dhcp_anycast_addr,
-           const char *last_ip4_address,
-           GError **error)
+ip4_start(NMDhcpClient *client,
+          const char *  dhcp_anycast_addr,
+          const char *  last_ip4_address,
+          GError **     error)
 {
-	nm_auto (sd_dhcp_client_unrefp) sd_dhcp_client *sd_client = NULL;
-	NMDhcpSystemd *self = NM_DHCP_SYSTEMD (client);
-	NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
-	gs_free char *lease_file = NULL;
-	GBytes *hwaddr;
-	const uint8_t *hwaddr_arr;
-	gsize hwaddr_len;
-	int arp_type;
-	GBytes *client_id;
-	gs_unref_bytes GBytes *client_id_new = NULL;
-	const uint8_t *client_id_arr;
-	size_t client_id_len;
-	struct in_addr last_addr = { 0 };
-	const char *hostname;
-	const char *mud_url;
-	int r, i;
-
-	g_return_val_if_fail (!priv->client4, FALSE);
-	g_return_val_if_fail (!priv->client6, FALSE);
-
-	r = sd_dhcp_client_new (&sd_client, FALSE);
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to create dhcp-client: %s");
-		return FALSE;
-	}
-
-	_LOGT ("dhcp-client4: set %p", sd_client);
-
-	r = sd_dhcp_client_attach_event (sd_client, NULL, 0);
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to attach event: %s");
-		return FALSE;
-	}
-
-	hwaddr = nm_dhcp_client_get_hw_addr (client);
-	if (   !hwaddr
-	    || !(hwaddr_arr = g_bytes_get_data (hwaddr, &hwaddr_len))
-	    || (arp_type = nm_utils_arp_type_detect_from_hwaddrlen (hwaddr_len)) < 0) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "invalid MAC address");
-		return FALSE;
-	}
-	r = sd_dhcp_client_set_mac (sd_client,
-	                            hwaddr_arr,
-	                            hwaddr_len,
-	                            (guint16) arp_type);
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to set MAC address: %s");
-		return FALSE;
-	}
-
-	r = sd_dhcp_client_set_ifindex (sd_client,
-	                                nm_dhcp_client_get_ifindex (client));
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to set ifindex: %s");
-		return FALSE;
-	}
-
-	nm_dhcp_utils_get_leasefile_path (AF_INET,
-	                                  "internal",
-	                                  nm_dhcp_client_get_iface (client),
-	                                  nm_dhcp_client_get_uuid (client),
-	                                  &lease_file);
-
-	if (last_ip4_address)
-		inet_pton (AF_INET, last_ip4_address, &last_addr);
-	else {
-		nm_auto (sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL;
-
-		dhcp_lease_load (&lease, lease_file);
-		if (lease)
-			sd_dhcp_lease_get_address (lease, &last_addr);
-	}
-
-	if (last_addr.s_addr) {
-		r = sd_dhcp_client_set_request_address (sd_client, &last_addr);
-		if (r < 0) {
-			nm_utils_error_set_errno (error, r, "failed to set last IPv4 address: %s");
-			return FALSE;
-		}
-	}
-
-	client_id = nm_dhcp_client_get_client_id (client);
-	if (!client_id) {
-		client_id_new = nm_utils_dhcp_client_id_mac (arp_type, hwaddr_arr, hwaddr_len);
-		client_id = client_id_new;
-	}
-
-	if (   !(client_id_arr = g_bytes_get_data (client_id, &client_id_len))
-	    || client_id_len < 2) {
-
-		/* invalid client-ids are not expected. */
-		nm_assert_not_reached ();
-
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "no valid IPv4 client-id");
-		return FALSE;
-	}
-
-	/* Note that we always set a client-id. In particular for infiniband that is necessary,
-	 * see https://tools.ietf.org/html/rfc4390#section-2.1 . */
-	r = sd_dhcp_client_set_client_id (sd_client,
-	                                  client_id_arr[0],
-	                                  client_id_arr + 1,
-	                                  NM_MIN (client_id_len - 1, _NM_SD_MAX_CLIENT_ID_LEN));
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to set IPv4 client-id: %s");
-		return FALSE;
-	}
-
-	/* Add requested options */
-	for (i = 0; _nm_dhcp_option_dhcp4_options[i].name; i++) {
-		if (_nm_dhcp_option_dhcp4_options[i].include) {
-			nm_assert (_nm_dhcp_option_dhcp4_options[i].option_num <= 255);
-			r = sd_dhcp_client_set_request_option (sd_client, _nm_dhcp_option_dhcp4_options[i].option_num);
-			nm_assert (r >= 0 || r == -EEXIST);
-		}
-	}
-
-	hostname = nm_dhcp_client_get_hostname (client);
-	if (hostname) {
-		/* FIXME: sd-dhcp decides which hostname/FQDN option to send (12 or 81)
-		 * only based on whether the hostname has a domain part or not. At the
-		 * moment there is no way to force one or another.
-		 */
-		r = sd_dhcp_client_set_hostname (sd_client, hostname);
-		if (r < 0) {
-			nm_utils_error_set_errno (error, r, "failed to set DHCP hostname: %s");
-			return FALSE;
-		}
-	}
-
-	mud_url = nm_dhcp_client_get_mud_url (client);
-	if (mud_url) {
-		r = sd_dhcp_client_set_mud_url (sd_client, mud_url);
-		if (r < 0) {
-			nm_utils_error_set_errno (error, r, "failed to set DHCP MUDURL: %s");
-			return FALSE;
-		}
-	}
-
-	r = sd_dhcp_client_set_callback (sd_client, dhcp_event_cb, client);
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to set callback: %s");
-		return FALSE;
-	}
-
-	priv->client4 = g_steal_pointer (&sd_client);
-
-	g_free (priv->lease_file);
-	priv->lease_file = g_steal_pointer (&lease_file);
-
-	nm_dhcp_client_set_client_id (client, client_id);
-
-	r = sd_dhcp_client_start (priv->client4);
-	if (r < 0) {
-		sd_dhcp_client_set_callback (priv->client4, NULL, NULL);
-		nm_clear_pointer (&priv->client4, sd_dhcp_client_unref);
-		nm_utils_error_set_errno (error, r, "failed to start DHCP client: %s");
-		return FALSE;
-	}
-
-	nm_dhcp_client_start_timeout (client);
-	return TRUE;
+    nm_auto(sd_dhcp_client_unrefp) sd_dhcp_client *sd_client  = NULL;
+    NMDhcpSystemd *                                self       = NM_DHCP_SYSTEMD(client);
+    NMDhcpSystemdPrivate *                         priv       = NM_DHCP_SYSTEMD_GET_PRIVATE(self);
+    gs_free char *                                 lease_file = NULL;
+    GBytes *                                       hwaddr;
+    const uint8_t *                                hwaddr_arr;
+    gsize                                          hwaddr_len;
+    int                                            arp_type;
+    GBytes *                                       client_id;
+    gs_unref_bytes GBytes *client_id_new = NULL;
+    GBytes *               vendor_class_identifier;
+    const uint8_t *        client_id_arr;
+    size_t                 client_id_len;
+    struct in_addr         last_addr = {0};
+    const char *           hostname;
+    const char *           mud_url;
+    int                    r, i;
+
+    g_return_val_if_fail(!priv->client4, FALSE);
+    g_return_val_if_fail(!priv->client6, FALSE);
+
+    r = sd_dhcp_client_new(&sd_client, FALSE);
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to create dhcp-client: %s");
+        return FALSE;
+    }
+
+    _LOGT("dhcp-client4: set %p", sd_client);
+
+    r = sd_dhcp_client_attach_event(sd_client, NULL, 0);
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to attach event: %s");
+        return FALSE;
+    }
+
+    hwaddr = nm_dhcp_client_get_hw_addr(client);
+    if (!hwaddr || !(hwaddr_arr = g_bytes_get_data(hwaddr, &hwaddr_len))
+        || (arp_type = nm_utils_arp_type_detect_from_hwaddrlen(hwaddr_len)) < 0) {
+        nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "invalid MAC address");
+        return FALSE;
+    }
+    r = sd_dhcp_client_set_mac(sd_client, hwaddr_arr, hwaddr_len, (guint16) arp_type);
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to set MAC address: %s");
+        return FALSE;
+    }
+
+    r = sd_dhcp_client_set_ifindex(sd_client, nm_dhcp_client_get_ifindex(client));
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to set ifindex: %s");
+        return FALSE;
+    }
+
+    nm_dhcp_utils_get_leasefile_path(AF_INET,
+                                     "internal",
+                                     nm_dhcp_client_get_iface(client),
+                                     nm_dhcp_client_get_uuid(client),
+                                     &lease_file);
+
+    if (last_ip4_address)
+        inet_pton(AF_INET, last_ip4_address, &last_addr);
+    else {
+        nm_auto(sd_dhcp_lease_unrefp) sd_dhcp_lease *lease = NULL;
+
+        dhcp_lease_load(&lease, lease_file);
+        if (lease)
+            sd_dhcp_lease_get_address(lease, &last_addr);
+    }
+
+    if (last_addr.s_addr) {
+        r = sd_dhcp_client_set_request_address(sd_client, &last_addr);
+        if (r < 0) {
+            nm_utils_error_set_errno(error, r, "failed to set last IPv4 address: %s");
+            return FALSE;
+        }
+    }
+
+    client_id = nm_dhcp_client_get_client_id(client);
+    if (!client_id) {
+        client_id_new = nm_utils_dhcp_client_id_mac(arp_type, hwaddr_arr, hwaddr_len);
+        client_id     = client_id_new;
+    }
+
+    if (!(client_id_arr = g_bytes_get_data(client_id, &client_id_len)) || client_id_len < 2) {
+        /* invalid client-ids are not expected. */
+        nm_assert_not_reached();
+
+        nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "no valid IPv4 client-id");
+        return FALSE;
+    }
+
+    /* Note that we always set a client-id. In particular for infiniband that is necessary,
+     * see https://tools.ietf.org/html/rfc4390#section-2.1 . */
+    r = sd_dhcp_client_set_client_id(sd_client,
+                                     client_id_arr[0],
+                                     client_id_arr + 1,
+                                     NM_MIN(client_id_len - 1, _NM_SD_MAX_CLIENT_ID_LEN));
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to set IPv4 client-id: %s");
+        return FALSE;
+    }
+
+    /* Add requested options */
+    for (i = 0; _nm_dhcp_option_dhcp4_options[i].name; i++) {
+        if (_nm_dhcp_option_dhcp4_options[i].include) {
+            nm_assert(_nm_dhcp_option_dhcp4_options[i].option_num <= 255);
+            r = sd_dhcp_client_set_request_option(sd_client,
+                                                  _nm_dhcp_option_dhcp4_options[i].option_num);
+            nm_assert(r >= 0 || r == -EEXIST);
+        }
+    }
+
+    hostname = nm_dhcp_client_get_hostname(client);
+    if (hostname) {
+        /* FIXME: sd-dhcp decides which hostname/FQDN option to send (12 or 81)
+         * only based on whether the hostname has a domain part or not. At the
+         * moment there is no way to force one or another.
+         */
+        r = sd_dhcp_client_set_hostname(sd_client, hostname);
+        if (r < 0) {
+            nm_utils_error_set_errno(error, r, "failed to set DHCP hostname: %s");
+            return FALSE;
+        }
+    }
+
+    mud_url = nm_dhcp_client_get_mud_url(client);
+    if (mud_url) {
+        r = sd_dhcp_client_set_mud_url(sd_client, mud_url);
+        if (r < 0) {
+            nm_utils_error_set_errno(error, r, "failed to set DHCP MUDURL: %s");
+            return FALSE;
+        }
+    }
+
+    vendor_class_identifier = nm_dhcp_client_get_vendor_class_identifier(client);
+    if (vendor_class_identifier) {
+        const char *option_data;
+        gsize       len;
+
+        option_data = g_bytes_get_data(vendor_class_identifier, &len);
+        nm_assert(option_data);
+        nm_assert(len <= 255);
+
+        option_data = nm_strndup_a(300, option_data, len, NULL);
+
+        r = sd_dhcp_client_set_vendor_class_identifier(sd_client, option_data);
+        if (r < 0) {
+            nm_utils_error_set_errno(error, r, "failed to set DHCP vendor class identifier: %s");
+            return FALSE;
+        }
+    }
+
+    r = sd_dhcp_client_set_callback(sd_client, dhcp_event_cb, client);
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to set callback: %s");
+        return FALSE;
+    }
+
+    priv->client4 = g_steal_pointer(&sd_client);
+
+    g_free(priv->lease_file);
+    priv->lease_file = g_steal_pointer(&lease_file);
+
+    nm_dhcp_client_set_client_id(client, client_id);
+
+    r = sd_dhcp_client_start(priv->client4);
+    if (r < 0) {
+        sd_dhcp_client_set_callback(priv->client4, NULL, NULL);
+        nm_clear_pointer(&priv->client4, sd_dhcp_client_unref);
+        nm_utils_error_set_errno(error, r, "failed to start DHCP client: %s");
+        return FALSE;
+    }
+
+    nm_dhcp_client_start_timeout(client);
+    return TRUE;
 }
 
 static NMIP6Config *
-lease_to_ip6_config (NMDedupMultiIndex *multi_idx,
-                     const char *iface,
-                     int ifindex,
-                     sd_dhcp6_lease *lease,
-                     gboolean info_only,
-                     GHashTable **out_options,
-                     gint32 ts,
-                     GError **error)
+lease_to_ip6_config(NMDedupMultiIndex *multi_idx,
+                    const char *       iface,
+                    int                ifindex,
+                    sd_dhcp6_lease *   lease,
+                    gboolean           info_only,
+                    GHashTable **      out_options,
+                    gint32             ts,
+                    GError **          error)
 {
-	gs_unref_object NMIP6Config *ip6_config = NULL;
-	gs_unref_hashtable GHashTable *options = NULL;
-	struct in6_addr tmp_addr;
-	const struct in6_addr *dns;
-	uint32_t lft_pref, lft_valid;
-	char addr_str[NM_UTILS_INET_ADDRSTRLEN];
-	char **domains;
-	const char *s;
-	nm_auto_free_gstring GString *str = NULL;
-	int num, i;
-
-	nm_assert (lease);
-
-	ip6_config = nm_ip6_config_new (multi_idx, ifindex);
-
-	options = out_options ? nm_dhcp_option_create_options_dict () : NULL;
-
-	sd_dhcp6_lease_reset_address_iter (lease);
-	nm_gstring_prepare (&str);
-	while (sd_dhcp6_lease_get_address (lease, &tmp_addr, &lft_pref, &lft_valid) >= 0) {
-		const NMPlatformIP6Address address = {
-			.plen        = 128,
-			.address     = tmp_addr,
-			.timestamp   = ts,
-			.lifetime    = lft_valid,
-			.preferred   = lft_pref,
-			.addr_source = NM_IP_CONFIG_SOURCE_DHCP,
-		};
-
-		nm_ip6_config_add_address (ip6_config, &address);
-
-		_nm_utils_inet6_ntop (&tmp_addr, addr_str);
-		g_string_append (nm_gstring_add_space_delimiter (str), addr_str);
-	};
-	if (str->len)
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp6_options,
-		                           NM_DHCP_OPTION_DHCP6_NM_IP_ADDRESS,
-		                           str->str);
-
-	if (   !info_only
-	    && nm_ip6_config_get_num_addresses (ip6_config) == 0) {
-		g_set_error_literal (error,
-		                     NM_MANAGER_ERROR,
-		                     NM_MANAGER_ERROR_FAILED,
-		                     "no address received in managed mode");
-		return NULL;
-	}
-
-	num = sd_dhcp6_lease_get_dns (lease, &dns);
-	if (num > 0) {
-		nm_gstring_prepare (&str);
-		for (i = 0; i < num; i++) {
-			_nm_utils_inet6_ntop (&dns[i], addr_str);
-			g_string_append (nm_gstring_add_space_delimiter (str), addr_str);
-			nm_ip6_config_add_nameserver (ip6_config, &dns[i]);
-		}
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp6_options,
-		                           NM_DHCP_OPTION_DHCP6_DNS_SERVERS,
-		                           str->str);
-	}
-
-	num = sd_dhcp6_lease_get_domains (lease, &domains);
-	if (num > 0) {
-		nm_gstring_prepare (&str);
-		for (i = 0; i < num; i++) {
-			g_string_append (nm_gstring_add_space_delimiter (str), domains[i]);
-			nm_ip6_config_add_search (ip6_config, domains[i]);
-		}
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp6_options,
-		                           NM_DHCP_OPTION_DHCP6_DOMAIN_LIST,
-		                           str->str);
-	}
-
-	if (sd_dhcp6_lease_get_fqdn (lease, &s) >= 0) {
-		nm_dhcp_option_add_option (options,
-		                           _nm_dhcp_option_dhcp6_options,
-		                           NM_DHCP_OPTION_DHCP6_FQDN,
-		                           s);
-	}
-
-	NM_SET_OUT (out_options, g_steal_pointer (&options));
-	return g_steal_pointer (&ip6_config);
+    gs_unref_object NMIP6Config *ip6_config = NULL;
+    gs_unref_hashtable GHashTable *options  = NULL;
+    struct in6_addr                tmp_addr;
+    const struct in6_addr *        dns;
+    uint32_t                       lft_pref, lft_valid;
+    char                           addr_str[NM_UTILS_INET_ADDRSTRLEN];
+    char **                        domains;
+    const char *                   s;
+    nm_auto_free_gstring GString *str = NULL;
+    int                           num, i;
+
+    nm_assert(lease);
+
+    ip6_config = nm_ip6_config_new(multi_idx, ifindex);
+
+    options = out_options ? nm_dhcp_option_create_options_dict() : NULL;
+
+    sd_dhcp6_lease_reset_address_iter(lease);
+    nm_gstring_prepare(&str);
+    while (sd_dhcp6_lease_get_address(lease, &tmp_addr, &lft_pref, &lft_valid) >= 0) {
+        const NMPlatformIP6Address address = {
+            .plen        = 128,
+            .address     = tmp_addr,
+            .timestamp   = ts,
+            .lifetime    = lft_valid,
+            .preferred   = lft_pref,
+            .addr_source = NM_IP_CONFIG_SOURCE_DHCP,
+        };
+
+        nm_ip6_config_add_address(ip6_config, &address);
+
+        _nm_utils_inet6_ntop(&tmp_addr, addr_str);
+        g_string_append(nm_gstring_add_space_delimiter(str), addr_str);
+    };
+    if (str->len)
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp6_options,
+                                  NM_DHCP_OPTION_DHCP6_NM_IP_ADDRESS,
+                                  str->str);
+
+    if (!info_only && nm_ip6_config_get_num_addresses(ip6_config) == 0) {
+        g_set_error_literal(error,
+                            NM_MANAGER_ERROR,
+                            NM_MANAGER_ERROR_FAILED,
+                            "no address received in managed mode");
+        return NULL;
+    }
+
+    num = sd_dhcp6_lease_get_dns(lease, &dns);
+    if (num > 0) {
+        nm_gstring_prepare(&str);
+        for (i = 0; i < num; i++) {
+            _nm_utils_inet6_ntop(&dns[i], addr_str);
+            g_string_append(nm_gstring_add_space_delimiter(str), addr_str);
+            nm_ip6_config_add_nameserver(ip6_config, &dns[i]);
+        }
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp6_options,
+                                  NM_DHCP_OPTION_DHCP6_DNS_SERVERS,
+                                  str->str);
+    }
+
+    num = sd_dhcp6_lease_get_domains(lease, &domains);
+    if (num > 0) {
+        nm_gstring_prepare(&str);
+        for (i = 0; i < num; i++) {
+            g_string_append(nm_gstring_add_space_delimiter(str), domains[i]);
+            nm_ip6_config_add_search(ip6_config, domains[i]);
+        }
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp6_options,
+                                  NM_DHCP_OPTION_DHCP6_DOMAIN_LIST,
+                                  str->str);
+    }
+
+    if (sd_dhcp6_lease_get_fqdn(lease, &s) >= 0) {
+        nm_dhcp_option_add_option(options,
+                                  _nm_dhcp_option_dhcp6_options,
+                                  NM_DHCP_OPTION_DHCP6_FQDN,
+                                  s);
+    }
+
+    NM_SET_OUT(out_options, g_steal_pointer(&options));
+    return g_steal_pointer(&ip6_config);
 }
 
 static void
-bound6_handle (NMDhcpSystemd *self)
+bound6_handle(NMDhcpSystemd *self)
 {
-	NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
-	const gint32 ts = nm_utils_get_monotonic_timestamp_sec ();
-	const char *iface = nm_dhcp_client_get_iface (NM_DHCP_CLIENT (self));
-	gs_unref_object NMIP6Config *ip6_config = NULL;
-	gs_unref_hashtable GHashTable *options = NULL;
-	gs_free_error GError *error = NULL;
-	NMPlatformIP6Address prefix = { 0 };
-	sd_dhcp6_lease *lease = NULL;
-
-	if (   sd_dhcp6_client_get_lease (priv->client6, &lease) < 0
-	    || !lease) {
-		_LOGW (" no lease!");
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
-		return;
-	}
-
-	_LOGD ("lease available");
-
-	ip6_config = lease_to_ip6_config (nm_dhcp_client_get_multi_idx (NM_DHCP_CLIENT (self)),
-	                                  iface,
-	                                  nm_dhcp_client_get_ifindex (NM_DHCP_CLIENT (self)),
-	                                  lease,
-	                                  nm_dhcp_client_get_info_only (NM_DHCP_CLIENT (self)),
-	                                  &options,
-	                                  ts,
-	                                  &error);
-
-	if (!ip6_config) {
-		_LOGW ("%s", error->message);
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (self), NM_DHCP_STATE_FAIL, NULL, NULL);
-		return;
-	}
-
-	nm_dhcp_client_set_state (NM_DHCP_CLIENT (self),
-	                          NM_DHCP_STATE_BOUND,
-	                          NM_IP_CONFIG_CAST (ip6_config),
-	                          options);
-
-	sd_dhcp6_lease_reset_pd_prefix_iter (lease);
-	while (!sd_dhcp6_lease_get_pd (lease,
-	                               &prefix.address,
-	                               &prefix.plen,
-	                               &prefix.preferred,
-	                               &prefix.lifetime)) {
-		prefix.timestamp = ts;
-		nm_dhcp_client_emit_ipv6_prefix_delegated (NM_DHCP_CLIENT (self), &prefix);
-	}
+    NMDhcpSystemdPrivate *priv              = NM_DHCP_SYSTEMD_GET_PRIVATE(self);
+    const gint32          ts                = nm_utils_get_monotonic_timestamp_sec();
+    const char *          iface             = nm_dhcp_client_get_iface(NM_DHCP_CLIENT(self));
+    gs_unref_object NMIP6Config *ip6_config = NULL;
+    gs_unref_hashtable GHashTable *options  = NULL;
+    gs_free_error GError *error             = NULL;
+    NMPlatformIP6Address  prefix            = {0};
+    sd_dhcp6_lease *      lease             = NULL;
+
+    if (sd_dhcp6_client_get_lease(priv->client6, &lease) < 0 || !lease) {
+        _LOGW(" no lease!");
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(self), NM_DHCP_STATE_FAIL, NULL, NULL);
+        return;
+    }
+
+    _LOGD("lease available");
+
+    ip6_config = lease_to_ip6_config(nm_dhcp_client_get_multi_idx(NM_DHCP_CLIENT(self)),
+                                     iface,
+                                     nm_dhcp_client_get_ifindex(NM_DHCP_CLIENT(self)),
+                                     lease,
+                                     nm_dhcp_client_get_info_only(NM_DHCP_CLIENT(self)),
+                                     &options,
+                                     ts,
+                                     &error);
+
+    if (!ip6_config) {
+        _LOGW("%s", error->message);
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(self), NM_DHCP_STATE_FAIL, NULL, NULL);
+        return;
+    }
+
+    nm_dhcp_client_set_state(NM_DHCP_CLIENT(self),
+                             NM_DHCP_STATE_BOUND,
+                             NM_IP_CONFIG_CAST(ip6_config),
+                             options);
+
+    sd_dhcp6_lease_reset_pd_prefix_iter(lease);
+    while (!sd_dhcp6_lease_get_pd(lease,
+                                  &prefix.address,
+                                  &prefix.plen,
+                                  &prefix.preferred,
+                                  &prefix.lifetime)) {
+        prefix.timestamp = ts;
+        nm_dhcp_client_emit_ipv6_prefix_delegated(NM_DHCP_CLIENT(self), &prefix);
+    }
 }
 
 static void
-dhcp6_event_cb (sd_dhcp6_client *client, int event, gpointer user_data)
+dhcp6_event_cb(sd_dhcp6_client *client, int event, gpointer user_data)
 {
-	NMDhcpSystemd *self = NM_DHCP_SYSTEMD (user_data);
-	NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
-
-	nm_assert (priv->client6 == client);
-
-	_LOGD ("client event %d", event);
-
-	switch (event) {
-	case SD_DHCP6_CLIENT_EVENT_RETRANS_MAX:
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_TIMEOUT, NULL, NULL);
-		break;
-	case SD_DHCP6_CLIENT_EVENT_RESEND_EXPIRE:
-	case SD_DHCP6_CLIENT_EVENT_STOP:
-		nm_dhcp_client_set_state (NM_DHCP_CLIENT (user_data), NM_DHCP_STATE_FAIL, NULL, NULL);
-		break;
-	case SD_DHCP6_CLIENT_EVENT_IP_ACQUIRE:
-	case SD_DHCP6_CLIENT_EVENT_INFORMATION_REQUEST:
-		bound6_handle (self);
-		break;
-	default:
-		_LOGW ("unhandled event %d", event);
-		break;
-	}
+    NMDhcpSystemd *       self = NM_DHCP_SYSTEMD(user_data);
+    NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE(self);
+
+    nm_assert(priv->client6 == client);
+
+    _LOGD("client event %d", event);
+
+    switch (event) {
+    case SD_DHCP6_CLIENT_EVENT_RETRANS_MAX:
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(user_data), NM_DHCP_STATE_TIMEOUT, NULL, NULL);
+        break;
+    case SD_DHCP6_CLIENT_EVENT_RESEND_EXPIRE:
+    case SD_DHCP6_CLIENT_EVENT_STOP:
+        nm_dhcp_client_set_state(NM_DHCP_CLIENT(user_data), NM_DHCP_STATE_FAIL, NULL, NULL);
+        break;
+    case SD_DHCP6_CLIENT_EVENT_IP_ACQUIRE:
+    case SD_DHCP6_CLIENT_EVENT_INFORMATION_REQUEST:
+        bound6_handle(self);
+        break;
+    default:
+        _LOGW("unhandled event %d", event);
+        break;
+    }
 }
 
 static gboolean
-ip6_start (NMDhcpClient *client,
-           const char *dhcp_anycast_addr,
-           const struct in6_addr *ll_addr,
-           NMSettingIP6ConfigPrivacy privacy,
-           guint needed_prefixes,
-           GError **error)
+ip6_start(NMDhcpClient *            client,
+          const char *              dhcp_anycast_addr,
+          const struct in6_addr *   ll_addr,
+          NMSettingIP6ConfigPrivacy privacy,
+          guint                     needed_prefixes,
+          GError **                 error)
 {
-	NMDhcpSystemd *self = NM_DHCP_SYSTEMD (client);
-	NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
-	nm_auto (sd_dhcp6_client_unrefp) sd_dhcp6_client *sd_client = NULL;
-	const char *hostname;
-	const char *mud_url;
-	int r, i;
-	const guint8 *duid_arr;
-	gsize duid_len;
-	GBytes *duid;
-
-	g_return_val_if_fail (!priv->client4, FALSE);
-	g_return_val_if_fail (!priv->client6, FALSE);
-
-	if (   !(duid = nm_dhcp_client_get_client_id (client))
-	    || !(duid_arr = g_bytes_get_data (duid, &duid_len))
-	    || duid_len < 2) {
-		nm_utils_error_set_literal (error, NM_UTILS_ERROR_UNKNOWN, "missing DUID");
-		g_return_val_if_reached (FALSE);
-	}
-
-	r = sd_dhcp6_client_new (&sd_client);
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to create dhcp-client: %s");
-		return FALSE;
-	}
-
-	_LOGT ("dhcp-client6: set %p", sd_client);
-
-	if (nm_dhcp_client_get_info_only (client))
-		sd_dhcp6_client_set_information_request (sd_client, 1);
-
-	r = sd_dhcp6_client_set_iaid (sd_client,
-	                              nm_dhcp_client_get_iaid (client));
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to set IAID: %s");
-		return FALSE;
-	}
-
-	r = sd_dhcp6_client_set_duid (sd_client,
-	                              unaligned_read_be16 (&duid_arr[0]),
-	                              &duid_arr[2],
-	                              duid_len - 2);
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to set DUID: %s");
-		return FALSE;
-	}
-
-	r = sd_dhcp6_client_attach_event (sd_client, NULL, 0);
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to attach event: %s");
-		return FALSE;
-	}
-
-	r = sd_dhcp6_client_set_ifindex (sd_client,
-	                                 nm_dhcp_client_get_ifindex (client));
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to set ifindex: %s");
-		return FALSE;
-	}
-
-	/* Add requested options */
-	for (i = 0; _nm_dhcp_option_dhcp6_options[i].name; i++) {
-		if (_nm_dhcp_option_dhcp6_options[i].include) {
-			r = sd_dhcp6_client_set_request_option (sd_client, _nm_dhcp_option_dhcp6_options[i].option_num);
-			nm_assert (r >= 0 || r == -EEXIST);
-		}
-	}
-
-	mud_url = nm_dhcp_client_get_mud_url (client);
-	if (mud_url) {
-		r = sd_dhcp6_client_set_request_mud_url (sd_client, mud_url);
-		if (r < 0) {
-			nm_utils_error_set_errno (error, r, "failed to set mud-url: %s");
-			return FALSE;
-		}
-	}
-
-	if (needed_prefixes > 0) {
-		if (needed_prefixes > 1)
-			_LOGW ("dhcp-client6: only one prefix request is supported");
-		/* FIXME: systemd-networkd API only allows to request a
-		 * single prefix */
-		r = sd_dhcp6_client_set_prefix_delegation (sd_client, TRUE);
-		if (r < 0) {
-			nm_utils_error_set_errno (error, r, "failed to enable prefix delegation: %s");
-			return FALSE;
-		}
-	}
-
-	r = sd_dhcp6_client_set_local_address (sd_client, ll_addr);
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to set local address: %s");
-		return FALSE;
-	}
-
-	hostname = nm_dhcp_client_get_hostname (client);
-	r = sd_dhcp6_client_set_fqdn (sd_client, hostname);
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to set DHCP hostname: %s");
-		return FALSE;
-	}
-
-	r = sd_dhcp6_client_set_callback (sd_client, dhcp6_event_cb, client);
-	if (r < 0) {
-		nm_utils_error_set_errno (error, r, "failed to set callback: %s");
-		return FALSE;
-	}
-
-	priv->client6 = g_steal_pointer (&sd_client);
-
-	r = sd_dhcp6_client_start (priv->client6);
-	if (r < 0) {
-		sd_dhcp6_client_set_callback (priv->client6, NULL, NULL);
-		nm_clear_pointer (&priv->client6, sd_dhcp6_client_unref);
-		nm_utils_error_set_errno (error, r, "failed to start client: %s");
-		return FALSE;
-	}
-
-	nm_dhcp_client_start_timeout (client);
-	return TRUE;
+    NMDhcpSystemd *                                  self      = NM_DHCP_SYSTEMD(client);
+    NMDhcpSystemdPrivate *                           priv      = NM_DHCP_SYSTEMD_GET_PRIVATE(self);
+    nm_auto(sd_dhcp6_client_unrefp) sd_dhcp6_client *sd_client = NULL;
+    const char *                                     hostname;
+    const char *                                     mud_url;
+    int                                              r, i;
+    const guint8 *                                   duid_arr;
+    gsize                                            duid_len;
+    GBytes *                                         duid;
+
+    g_return_val_if_fail(!priv->client4, FALSE);
+    g_return_val_if_fail(!priv->client6, FALSE);
+
+    if (!(duid = nm_dhcp_client_get_client_id(client))
+        || !(duid_arr = g_bytes_get_data(duid, &duid_len)) || duid_len < 2) {
+        nm_utils_error_set_literal(error, NM_UTILS_ERROR_UNKNOWN, "missing DUID");
+        g_return_val_if_reached(FALSE);
+    }
+
+    r = sd_dhcp6_client_new(&sd_client);
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to create dhcp-client: %s");
+        return FALSE;
+    }
+
+    _LOGT("dhcp-client6: set %p", sd_client);
+
+    if (nm_dhcp_client_get_info_only(client))
+        sd_dhcp6_client_set_information_request(sd_client, 1);
+
+    r = sd_dhcp6_client_set_iaid(sd_client, nm_dhcp_client_get_iaid(client));
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to set IAID: %s");
+        return FALSE;
+    }
+
+    r = sd_dhcp6_client_set_duid(sd_client,
+                                 unaligned_read_be16(&duid_arr[0]),
+                                 &duid_arr[2],
+                                 duid_len - 2);
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to set DUID: %s");
+        return FALSE;
+    }
+
+    r = sd_dhcp6_client_attach_event(sd_client, NULL, 0);
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to attach event: %s");
+        return FALSE;
+    }
+
+    r = sd_dhcp6_client_set_ifindex(sd_client, nm_dhcp_client_get_ifindex(client));
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to set ifindex: %s");
+        return FALSE;
+    }
+
+    /* Add requested options */
+    for (i = 0; _nm_dhcp_option_dhcp6_options[i].name; i++) {
+        if (_nm_dhcp_option_dhcp6_options[i].include) {
+            r = sd_dhcp6_client_set_request_option(sd_client,
+                                                   _nm_dhcp_option_dhcp6_options[i].option_num);
+            nm_assert(r >= 0 || r == -EEXIST);
+        }
+    }
+
+    mud_url = nm_dhcp_client_get_mud_url(client);
+    if (mud_url) {
+        r = sd_dhcp6_client_set_request_mud_url(sd_client, mud_url);
+        if (r < 0) {
+            nm_utils_error_set_errno(error, r, "failed to set mud-url: %s");
+            return FALSE;
+        }
+    }
+
+    if (needed_prefixes > 0) {
+        if (needed_prefixes > 1)
+            _LOGW("dhcp-client6: only one prefix request is supported");
+        /* FIXME: systemd-networkd API only allows to request a
+         * single prefix */
+        r = sd_dhcp6_client_set_prefix_delegation(sd_client, TRUE);
+        if (r < 0) {
+            nm_utils_error_set_errno(error, r, "failed to enable prefix delegation: %s");
+            return FALSE;
+        }
+    }
+
+    r = sd_dhcp6_client_set_local_address(sd_client, ll_addr);
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to set local address: %s");
+        return FALSE;
+    }
+
+    hostname = nm_dhcp_client_get_hostname(client);
+    r        = sd_dhcp6_client_set_fqdn(sd_client, hostname);
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to set DHCP hostname: %s");
+        return FALSE;
+    }
+
+    r = sd_dhcp6_client_set_callback(sd_client, dhcp6_event_cb, client);
+    if (r < 0) {
+        nm_utils_error_set_errno(error, r, "failed to set callback: %s");
+        return FALSE;
+    }
+
+    priv->client6 = g_steal_pointer(&sd_client);
+
+    r = sd_dhcp6_client_start(priv->client6);
+    if (r < 0) {
+        sd_dhcp6_client_set_callback(priv->client6, NULL, NULL);
+        nm_clear_pointer(&priv->client6, sd_dhcp6_client_unref);
+        nm_utils_error_set_errno(error, r, "failed to start client: %s");
+        return FALSE;
+    }
+
+    nm_dhcp_client_start_timeout(client);
+    return TRUE;
 }
 
 static void
-stop (NMDhcpClient *client, gboolean release)
+stop(NMDhcpClient *client, gboolean release)
 {
-	NMDhcpSystemd *self = NM_DHCP_SYSTEMD (client);
-	NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (self);
-	int r = 0;
-
-	NM_DHCP_CLIENT_CLASS (nm_dhcp_systemd_parent_class)->stop (client, release);
-
-	_LOGT ("dhcp-client%d: stop %p",
-	       priv->client4 ? '4' : '6',
-	       priv->client4 ? (gpointer) priv->client4 : (gpointer) priv->client6);
-
-	if (priv->client4) {
-		sd_dhcp_client_set_callback (priv->client4, NULL, NULL);
-		r = sd_dhcp_client_stop (priv->client4);
-	} else if (priv->client6) {
-		sd_dhcp6_client_set_callback (priv->client6, NULL, NULL);
-		r = sd_dhcp6_client_stop (priv->client6);
-	}
-
-	if (r)
-		_LOGW ("failed to stop client (%d)", r);
+    NMDhcpSystemd *       self = NM_DHCP_SYSTEMD(client);
+    NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE(self);
+    int                   r    = 0;
+
+    NM_DHCP_CLIENT_CLASS(nm_dhcp_systemd_parent_class)->stop(client, release);
+
+    _LOGT("dhcp-client%d: stop %p",
+          priv->client4 ? '4' : '6',
+          priv->client4 ? (gpointer) priv->client4 : (gpointer) priv->client6);
+
+    if (priv->client4) {
+        sd_dhcp_client_set_callback(priv->client4, NULL, NULL);
+        r = sd_dhcp_client_stop(priv->client4);
+    } else if (priv->client6) {
+        sd_dhcp6_client_set_callback(priv->client6, NULL, NULL);
+        r = sd_dhcp6_client_stop(priv->client6);
+    }
+
+    if (r)
+        _LOGW("failed to stop client (%d)", r);
 }
 
 /*****************************************************************************/
 
 static void
-nm_dhcp_systemd_init (NMDhcpSystemd *self)
-{
-}
+nm_dhcp_systemd_init(NMDhcpSystemd *self)
+{}
 
 static void
-dispose (GObject *object)
+dispose(GObject *object)
 {
-	NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE (object);
+    NMDhcpSystemdPrivate *priv = NM_DHCP_SYSTEMD_GET_PRIVATE(object);
 
-	nm_clear_g_free (&priv->lease_file);
+    nm_clear_g_free(&priv->lease_file);
 
-	if (priv->client4) {
-		sd_dhcp_client_stop (priv->client4);
-		sd_dhcp_client_unref (priv->client4);
-		priv->client4 = NULL;
-	}
+    if (priv->client4) {
+        sd_dhcp_client_stop(priv->client4);
+        sd_dhcp_client_unref(priv->client4);
+        priv->client4 = NULL;
+    }
 
-	if (priv->client6) {
-		sd_dhcp6_client_stop (priv->client6);
-		sd_dhcp6_client_unref (priv->client6);
-		priv->client6 = NULL;
-	}
+    if (priv->client6) {
+        sd_dhcp6_client_stop(priv->client6);
+        sd_dhcp6_client_unref(priv->client6);
+        priv->client6 = NULL;
+    }
 
-	G_OBJECT_CLASS (nm_dhcp_systemd_parent_class)->dispose (object);
+    G_OBJECT_CLASS(nm_dhcp_systemd_parent_class)->dispose(object);
 }
 
 static void
-nm_dhcp_systemd_class_init (NMDhcpSystemdClass *sdhcp_class)
+nm_dhcp_systemd_class_init(NMDhcpSystemdClass *sdhcp_class)
 {
-	NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS (sdhcp_class);
-	GObjectClass *object_class = G_OBJECT_CLASS (sdhcp_class);
+    NMDhcpClientClass *client_class = NM_DHCP_CLIENT_CLASS(sdhcp_class);
+    GObjectClass *     object_class = G_OBJECT_CLASS(sdhcp_class);
 
-	object_class->dispose = dispose;
+    object_class->dispose = dispose;
 
-	client_class->ip4_start = ip4_start;
-	client_class->ip6_start = ip6_start;
-	client_class->stop = stop;
+    client_class->ip4_start = ip4_start;
+    client_class->ip6_start = ip6_start;
+    client_class->stop      = stop;
 }
 
 const NMDhcpClientFactory _nm_dhcp_client_factory_systemd = {
-	.name         = "systemd",
-	.get_type     = nm_dhcp_systemd_get_type,
-	.experimental = TRUE,
+    .name         = "systemd",
+    .get_type     = nm_dhcp_systemd_get_type,
+    .experimental = TRUE,
 };
 
 /*****************************************************************************/
 
 static GType
-_get_type_per_addr_family (int addr_family)
+_get_type_per_addr_family(int addr_family)
 {
-	nm_assert_addr_family (addr_family);
+    nm_assert_addr_family(addr_family);
 
-	if (addr_family == AF_INET)
-		return nm_dhcp_nettools_get_type ();
-	return nm_dhcp_systemd_get_type ();
+    if (addr_family == AF_INET)
+        return nm_dhcp_nettools_get_type();
+    return nm_dhcp_systemd_get_type();
 }
 
 const NMDhcpClientFactory _nm_dhcp_client_factory_internal = {
-	.name                     = "internal",
-	.get_type_per_addr_family = _get_type_per_addr_family,
+    .name                     = "internal",
+    .get_type_per_addr_family = _get_type_per_addr_family,
 };
diff --git a/src/dhcp/nm-dhcp-utils.c b/src/dhcp/nm-dhcp-utils.c
index 1c305238..bf10e2b5 100644
--- a/src/dhcp/nm-dhcp-utils.c
+++ b/src/dhcp/nm-dhcp-utils.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2005 - 2010 Red Hat, Inc.
  */
@@ -21,690 +21,702 @@
 /*****************************************************************************/
 
 static gboolean
-ip4_process_dhcpcd_rfc3442_routes (const char *iface,
-                                   const char *str,
-                                   guint32 route_table,
-                                   guint32 route_metric,
-                                   NMIP4Config *ip4_config,
-                                   guint32 *gwaddr)
+ip4_process_dhcpcd_rfc3442_routes(const char * iface,
+                                  const char * str,
+                                  guint32      route_table,
+                                  guint32      route_metric,
+                                  NMIP4Config *ip4_config,
+                                  guint32 *    gwaddr)
 {
-	char **routes, **r;
-	gboolean have_routes = FALSE;
-
-	routes = g_strsplit (str, " ", 0);
-	if (g_strv_length (routes) == 0)
-		goto out;
-
-	if ((g_strv_length (routes) % 2) != 0) {
-		_LOG2W (LOGD_DHCP4, iface, "  classless static routes provided, but invalid");
-		goto out;
-	}
-
-	for (r = routes; *r; r += 2) {
-		char *slash;
-		NMPlatformIP4Route route;
-		int rt_cidr = 32;
-		guint32 rt_addr, rt_route;
-
-		slash = strchr(*r, '/');
-		if (slash) {
-			*slash = '\0';
-			errno = 0;
-			rt_cidr = strtol (slash + 1, NULL, 10);
-			if (errno || rt_cidr > 32) {
-				_LOG2W (LOGD_DHCP4, iface, "DHCP provided invalid classless static route cidr: '%s'", slash + 1);
-				continue;
-			}
-		}
-		if (inet_pton (AF_INET, *r, &rt_addr) <= 0) {
-			_LOG2W (LOGD_DHCP4, iface, "DHCP provided invalid classless static route address: '%s'", *r);
-			continue;
-		}
-		if (inet_pton (AF_INET, *(r + 1), &rt_route) <= 0) {
-			_LOG2W (LOGD_DHCP4, iface, "DHCP provided invalid classless static route gateway: '%s'", *(r + 1));
-			continue;
-		}
-
-		have_routes = TRUE;
-		if (rt_cidr == 0 && rt_addr == 0) {
-			/* FIXME: how to handle multiple routers? */
-			*gwaddr = rt_route;
-		} else {
-			_LOG2I (LOGD_DHCP4, iface, "  classless static route %s/%d gw %s", *r, rt_cidr, *(r + 1));
-			memset (&route, 0, sizeof (route));
-			route.network = nm_utils_ip4_address_clear_host_address (rt_addr, rt_cidr);
-			route.plen = rt_cidr;
-			route.gateway = rt_route;
-			route.rt_source = NM_IP_CONFIG_SOURCE_DHCP;
-			route.metric = route_metric;
-			route.table_coerced = nm_platform_route_table_coerce (route_table);
-			nm_ip4_config_add_route (ip4_config, &route, NULL);
-		}
-	}
-
-out:
-	g_strfreev (routes);
-	return have_routes;
+    gs_free const char **routes = NULL;
+    const char **        r;
+    gboolean             have_routes = FALSE;
+
+    routes = nm_utils_strsplit_set(str, " ");
+    if (!routes)
+        return FALSE;
+
+    if ((NM_PTRARRAY_LEN(routes) % 2) != 0) {
+        _LOG2W(LOGD_DHCP4, iface, "  classless static routes provided, but invalid");
+        return FALSE;
+    }
+
+    for (r = routes; *r; r += 2) {
+        char *             slash;
+        NMPlatformIP4Route route;
+        int                rt_cidr = 32;
+        guint32            rt_addr, rt_route;
+
+        slash = strchr(*r, '/');
+        if (slash) {
+            *slash  = '\0';
+            errno   = 0;
+            rt_cidr = strtol(slash + 1, NULL, 10);
+            if (errno || rt_cidr > 32) {
+                _LOG2W(LOGD_DHCP4,
+                       iface,
+                       "DHCP provided invalid classless static route cidr: '%s'",
+                       slash + 1);
+                continue;
+            }
+        }
+        if (inet_pton(AF_INET, *r, &rt_addr) <= 0) {
+            _LOG2W(LOGD_DHCP4,
+                   iface,
+                   "DHCP provided invalid classless static route address: '%s'",
+                   *r);
+            continue;
+        }
+        if (inet_pton(AF_INET, *(r + 1), &rt_route) <= 0) {
+            _LOG2W(LOGD_DHCP4,
+                   iface,
+                   "DHCP provided invalid classless static route gateway: '%s'",
+                   *(r + 1));
+            continue;
+        }
+
+        have_routes = TRUE;
+        if (rt_cidr == 0 && rt_addr == 0) {
+            /* FIXME: how to handle multiple routers? */
+            *gwaddr = rt_route;
+        } else {
+            _LOG2I(LOGD_DHCP4,
+                   iface,
+                   "  classless static route %s/%d gw %s",
+                   *r,
+                   rt_cidr,
+                   *(r + 1));
+            memset(&route, 0, sizeof(route));
+            route.network       = nm_utils_ip4_address_clear_host_address(rt_addr, rt_cidr);
+            route.plen          = rt_cidr;
+            route.gateway       = rt_route;
+            route.rt_source     = NM_IP_CONFIG_SOURCE_DHCP;
+            route.metric        = route_metric;
+            route.table_coerced = nm_platform_route_table_coerce(route_table);
+            nm_ip4_config_add_route(ip4_config, &route, NULL);
+        }
+    }
+
+    return have_routes;
 }
 
 static gboolean
-process_dhclient_rfc3442_route (const char *const**p_octets,
-                                NMPlatformIP4Route *route)
+process_dhclient_rfc3442_route(const char *const **p_octets, NMPlatformIP4Route *route)
 {
-	const char *const*o = *p_octets;
-	gs_free char *next_hop = NULL;
-	int addr_len;
-	int v_plen;
-	in_addr_t tmp_addr;
-	in_addr_t v_network = 0;
-
-	v_plen = _nm_utils_ascii_str_to_int64 (*o, 10, 0, 32, -1);
-	if (v_plen == -1)
-		return FALSE;
-	o++;
-
-	addr_len =   v_plen > 0
-	           ? ((v_plen - 1) / 8) + 1
-	           : 0;
-
-	/* ensure there's at least the address + next hop left */
-	if (NM_PTRARRAY_LEN (o) < addr_len + 4)
-		return FALSE;
-
-	if (v_plen > 0) {
-		const char *addr[4] = { "0", "0", "0", "0" };
-		gs_free char *str_addr = NULL;
-		int i;
-
-		for (i = 0; i < addr_len; i++)
-			addr[i] = *o++;
-
-		str_addr = g_strjoin (".", addr[0], addr[1], addr[2], addr[3], NULL);
-		if (inet_pton (AF_INET, str_addr, &tmp_addr) <= 0)
-			return FALSE;
-		v_network = nm_utils_ip4_address_clear_host_address (tmp_addr, v_plen);
-	}
-
-	next_hop = g_strjoin (".", o[0], o[1], o[2], o[3], NULL);
-	o += 4;
-	if (inet_pton (AF_INET, next_hop, &tmp_addr) <= 0)
-		return FALSE;
-
-	*route = (NMPlatformIP4Route) {
-		.network = v_network,
-		.plen    = v_plen,
-		.gateway = tmp_addr,
-	};
-	*p_octets = o;
-	return TRUE;
+    const char *const *o        = *p_octets;
+    gs_free char *     next_hop = NULL;
+    int                addr_len;
+    int                v_plen;
+    in_addr_t          tmp_addr;
+    in_addr_t          v_network = 0;
+
+    v_plen = _nm_utils_ascii_str_to_int64(*o, 10, 0, 32, -1);
+    if (v_plen == -1)
+        return FALSE;
+    o++;
+
+    addr_len = v_plen > 0 ? ((v_plen - 1) / 8) + 1 : 0;
+
+    /* ensure there's at least the address + next hop left */
+    if (NM_PTRARRAY_LEN(o) < addr_len + 4)
+        return FALSE;
+
+    if (v_plen > 0) {
+        const char *  addr[4]  = {"0", "0", "0", "0"};
+        gs_free char *str_addr = NULL;
+        int           i;
+
+        for (i = 0; i < addr_len; i++)
+            addr[i] = *o++;
+
+        str_addr = g_strjoin(".", addr[0], addr[1], addr[2], addr[3], NULL);
+        if (inet_pton(AF_INET, str_addr, &tmp_addr) <= 0)
+            return FALSE;
+        v_network = nm_utils_ip4_address_clear_host_address(tmp_addr, v_plen);
+    }
+
+    next_hop = g_strjoin(".", o[0], o[1], o[2], o[3], NULL);
+    o += 4;
+    if (inet_pton(AF_INET, next_hop, &tmp_addr) <= 0)
+        return FALSE;
+
+    *route = (NMPlatformIP4Route){
+        .network = v_network,
+        .plen    = v_plen,
+        .gateway = tmp_addr,
+    };
+    *p_octets = o;
+    return TRUE;
 }
 
 static gboolean
-ip4_process_dhclient_rfc3442_routes (const char *iface,
-                                     const char *str,
-                                     guint32 route_table,
-                                     guint32 route_metric,
-                                     NMIP4Config *ip4_config,
-                                     guint32 *gwaddr)
+ip4_process_dhclient_rfc3442_routes(const char * iface,
+                                    const char * str,
+                                    guint32      route_table,
+                                    guint32      route_metric,
+                                    NMIP4Config *ip4_config,
+                                    guint32 *    gwaddr)
 {
-	gs_free const char **octets = NULL;
-	const char *const*o;
-	gboolean have_routes = FALSE;
-
-	octets = nm_utils_strsplit_set_with_empty (str, " .");
-	if (NM_PTRARRAY_LEN (octets) < 5) {
-		_LOG2W (LOGD_DHCP4, iface, "ignoring invalid classless static routes '%s'", str);
-		return FALSE;
-	}
-
-	o = octets;
-	while (*o) {
-		NMPlatformIP4Route route;
-
-		if (!process_dhclient_rfc3442_route (&o, &route)) {
-			_LOG2W (LOGD_DHCP4, iface, "ignoring invalid classless static routes");
-			return have_routes;
-		}
-
-		have_routes = TRUE;
-		if (!route.plen) {
-			/* gateway passed as classless static route */
-			*gwaddr = route.gateway;
-		} else {
-			char b1[INET_ADDRSTRLEN];
-			char b2[INET_ADDRSTRLEN];
-
-			/* normal route */
-			route.rt_source = NM_IP_CONFIG_SOURCE_DHCP;
-			route.metric = route_metric;
-			route.table_coerced = nm_platform_route_table_coerce (route_table);
-			nm_ip4_config_add_route (ip4_config, &route, NULL);
-
-			_LOG2I (LOGD_DHCP4, iface, "  classless static route %s/%d gw %s",
-			        _nm_utils_inet4_ntop (route.network, b1),
-			        route.plen,
-			        _nm_utils_inet4_ntop (route.gateway, b2));
-		}
-	}
-
-	return have_routes;
+    gs_free const char **octets = NULL;
+    const char *const *  o;
+    gboolean             have_routes = FALSE;
+
+    octets = nm_utils_strsplit_set_with_empty(str, " .");
+    if (NM_PTRARRAY_LEN(octets) < 5) {
+        _LOG2W(LOGD_DHCP4, iface, "ignoring invalid classless static routes '%s'", str);
+        return FALSE;
+    }
+
+    o = octets;
+    while (*o) {
+        NMPlatformIP4Route route;
+
+        if (!process_dhclient_rfc3442_route(&o, &route)) {
+            _LOG2W(LOGD_DHCP4, iface, "ignoring invalid classless static routes");
+            return have_routes;
+        }
+
+        have_routes = TRUE;
+        if (!route.plen) {
+            /* gateway passed as classless static route */
+            *gwaddr = route.gateway;
+        } else {
+            char b1[INET_ADDRSTRLEN];
+            char b2[INET_ADDRSTRLEN];
+
+            /* normal route */
+            route.rt_source     = NM_IP_CONFIG_SOURCE_DHCP;
+            route.metric        = route_metric;
+            route.table_coerced = nm_platform_route_table_coerce(route_table);
+            nm_ip4_config_add_route(ip4_config, &route, NULL);
+
+            _LOG2I(LOGD_DHCP4,
+                   iface,
+                   "  classless static route %s/%d gw %s",
+                   _nm_utils_inet4_ntop(route.network, b1),
+                   route.plen,
+                   _nm_utils_inet4_ntop(route.gateway, b2));
+        }
+    }
+
+    return have_routes;
 }
 
 static gboolean
-ip4_process_classless_routes (const char *iface,
-                              GHashTable *options,
-                              guint32 route_table,
-                              guint32 route_metric,
-                              NMIP4Config *ip4_config,
-                              guint32 *gwaddr)
+ip4_process_classless_routes(const char * iface,
+                             GHashTable * options,
+                             guint32      route_table,
+                             guint32      route_metric,
+                             NMIP4Config *ip4_config,
+                             guint32 *    gwaddr)
 {
-	const char *str, *p;
-
-	g_return_val_if_fail (options != NULL, FALSE);
-	g_return_val_if_fail (ip4_config != NULL, FALSE);
-
-	*gwaddr = 0;
-
-	/* dhcpd/dhclient in Fedora has support for rfc3442 implemented using a
-	 * slightly different format:
-	 *
-	 * option classless-static-routes = array of (destination-descriptor ip-address);
-	 *
-	 * which results in:
-	 *
-	 * 0 192.168.0.113 25.129.210.177.132 192.168.0.113 7.2 10.34.255.6
-	 *
-	 * dhcpcd supports classless static routes natively and uses this same
-	 * option identifier with the following format:
-	 *
-	 * 192.168.10.0/24 192.168.1.1 10.0.0.0/8 10.17.66.41
-	 */
-	str = g_hash_table_lookup (options, "classless_static_routes");
-
-	/* dhclient doesn't have actual support for rfc3442 classless static routes
-	 * upstream.  Thus, people resort to defining the option in dhclient.conf
-	 * and using arbitrary formats like so:
-	 *
-	 * option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
-	 *
-	 * See https://lists.isc.org/pipermail/dhcp-users/2008-December/007629.html
-	 */
-	if (!str)
-		str = g_hash_table_lookup (options, "rfc3442_classless_static_routes");
-
-	/* Microsoft version; same as rfc3442 but with a different option # (249) */
-	if (!str)
-		str = g_hash_table_lookup (options, "ms_classless_static_routes");
-
-	if (!str || !strlen (str))
-		return FALSE;
-
-	p = str;
-	while (*p) {
-		if (!g_ascii_isdigit (*p) && (*p != ' ') && (*p != '.') && (*p != '/')) {
-			_LOG2W (LOGD_DHCP4, iface, "ignoring invalid classless static routes '%s'", str);
-			return FALSE;
-		}
-		p++;
-	};
-
-	if (strchr (str, '/')) {
-		/* dhcpcd format */
-		return ip4_process_dhcpcd_rfc3442_routes (iface, str, route_table, route_metric, ip4_config, gwaddr);
-	}
-
-	return ip4_process_dhclient_rfc3442_routes (iface, str, route_table, route_metric, ip4_config, gwaddr);
+    const char *str, *p;
+
+    g_return_val_if_fail(options != NULL, FALSE);
+    g_return_val_if_fail(ip4_config != NULL, FALSE);
+
+    *gwaddr = 0;
+
+    /* dhcpd/dhclient in Fedora has support for rfc3442 implemented using a
+     * slightly different format:
+     *
+     * option classless-static-routes = array of (destination-descriptor ip-address);
+     *
+     * which results in:
+     *
+     * 0 192.168.0.113 25.129.210.177.132 192.168.0.113 7.2 10.34.255.6
+     *
+     * dhcpcd supports classless static routes natively and uses this same
+     * option identifier with the following format:
+     *
+     * 192.168.10.0/24 192.168.1.1 10.0.0.0/8 10.17.66.41
+     */
+    str = g_hash_table_lookup(options, "classless_static_routes");
+
+    /* dhclient doesn't have actual support for rfc3442 classless static routes
+     * upstream.  Thus, people resort to defining the option in dhclient.conf
+     * and using arbitrary formats like so:
+     *
+     * option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
+     *
+     * See https://lists.isc.org/pipermail/dhcp-users/2008-December/007629.html
+     */
+    if (!str)
+        str = g_hash_table_lookup(options, "rfc3442_classless_static_routes");
+
+    /* Microsoft version; same as rfc3442 but with a different option # (249) */
+    if (!str)
+        str = g_hash_table_lookup(options, "ms_classless_static_routes");
+
+    if (!str || !strlen(str))
+        return FALSE;
+
+    p = str;
+    while (*p) {
+        if (!g_ascii_isdigit(*p) && (*p != ' ') && (*p != '.') && (*p != '/')) {
+            _LOG2W(LOGD_DHCP4, iface, "ignoring invalid classless static routes '%s'", str);
+            return FALSE;
+        }
+        p++;
+    };
+
+    if (strchr(str, '/')) {
+        /* dhcpcd format */
+        return ip4_process_dhcpcd_rfc3442_routes(iface,
+                                                 str,
+                                                 route_table,
+                                                 route_metric,
+                                                 ip4_config,
+                                                 gwaddr);
+    }
+
+    return ip4_process_dhclient_rfc3442_routes(iface,
+                                               str,
+                                               route_table,
+                                               route_metric,
+                                               ip4_config,
+                                               gwaddr);
 }
 
 static void
-process_classful_routes (const char *iface,
-                         GHashTable *options,
-                         guint32 route_table,
-                         guint32 route_metric,
-                         NMIP4Config *ip4_config)
+process_classful_routes(const char * iface,
+                        GHashTable * options,
+                        guint32      route_table,
+                        guint32      route_metric,
+                        NMIP4Config *ip4_config)
 {
-	const char *str;
-	char **searches, **s;
-
-	str = g_hash_table_lookup (options, "static_routes");
-	if (!str)
-		return;
-
-	searches = g_strsplit (str, " ", 0);
-	if ((g_strv_length (searches) % 2)) {
-		_LOG2I (LOGD_DHCP, iface, "  static routes provided, but invalid");
-		goto out;
-	}
-
-	for (s = searches; *s; s += 2) {
-		NMPlatformIP4Route route;
-		guint32 rt_addr, rt_route;
-
-		if (inet_pton (AF_INET, *s, &rt_addr) <= 0) {
-			_LOG2W (LOGD_DHCP, iface, "DHCP provided invalid static route address: '%s'", *s);
-			continue;
-		}
-		if (inet_pton (AF_INET, *(s + 1), &rt_route) <= 0) {
-			_LOG2W (LOGD_DHCP, iface, "DHCP provided invalid static route gateway: '%s'", *(s + 1));
-			continue;
-		}
-
-		// FIXME: ensure the IP address and route are sane
-
-		memset (&route, 0, sizeof (route));
-		route.network = rt_addr;
-		/* RFC 2132, updated by RFC 3442:
-		   The Static Routes option (option 33) does not provide a subnet mask
-		   for each route - it is assumed that the subnet mask is implicit in
-		   whatever network number is specified in each route entry */
-		route.plen = _nm_utils_ip4_get_default_prefix (rt_addr);
-		if (rt_addr & ~_nm_utils_ip4_prefix_to_netmask (route.plen)) {
-			/* RFC 943: target not "this network"; using host routing */
-			route.plen = 32;
-		}
-		route.gateway = rt_route;
-		route.rt_source = NM_IP_CONFIG_SOURCE_DHCP;
-		route.metric = route_metric;
-		route.table_coerced = nm_platform_route_table_coerce (route_table);
-
-		route.network = nm_utils_ip4_address_clear_host_address (route.network, route.plen);
-
-		nm_ip4_config_add_route (ip4_config, &route, NULL);
-		_LOG2I (LOGD_DHCP, iface, "  static route %s",
-		             nm_platform_ip4_route_to_string (&route, NULL, 0));
-	}
-
-out:
-	g_strfreev (searches);
+    gs_free const char **searches = NULL;
+    const char **        s;
+    const char *         str;
+
+    str = g_hash_table_lookup(options, "static_routes");
+    if (!str)
+        return;
+
+    searches = nm_utils_strsplit_set(str, " ");
+    if (!searches)
+        return;
+
+    if ((NM_PTRARRAY_LEN(searches) % 2) != 0) {
+        _LOG2I(LOGD_DHCP, iface, "  static routes provided, but invalid");
+        return;
+    }
+
+    for (s = searches; *s; s += 2) {
+        NMPlatformIP4Route route;
+        guint32            rt_addr, rt_route;
+
+        if (inet_pton(AF_INET, *s, &rt_addr) <= 0) {
+            _LOG2W(LOGD_DHCP, iface, "DHCP provided invalid static route address: '%s'", *s);
+            continue;
+        }
+        if (inet_pton(AF_INET, *(s + 1), &rt_route) <= 0) {
+            _LOG2W(LOGD_DHCP, iface, "DHCP provided invalid static route gateway: '%s'", *(s + 1));
+            continue;
+        }
+
+        // FIXME: ensure the IP address and route are sane
+
+        memset(&route, 0, sizeof(route));
+        route.network = rt_addr;
+        /* RFC 2132, updated by RFC 3442:
+         * The Static Routes option (option 33) does not provide a subnet mask
+         * for each route - it is assumed that the subnet mask is implicit in
+         * whatever network number is specified in each route entry */
+        route.plen = _nm_utils_ip4_get_default_prefix(rt_addr);
+        if (rt_addr & ~_nm_utils_ip4_prefix_to_netmask(route.plen)) {
+            /* RFC 943: target not "this network"; using host routing */
+            route.plen = 32;
+        }
+        route.gateway       = rt_route;
+        route.rt_source     = NM_IP_CONFIG_SOURCE_DHCP;
+        route.metric        = route_metric;
+        route.table_coerced = nm_platform_route_table_coerce(route_table);
+
+        route.network = nm_utils_ip4_address_clear_host_address(route.network, route.plen);
+
+        nm_ip4_config_add_route(ip4_config, &route, NULL);
+        _LOG2I(LOGD_DHCP,
+               iface,
+               "  static route %s",
+               nm_platform_ip4_route_to_string(&route, NULL, 0));
+    }
 }
 
 static void
-process_domain_search (const char *iface,
-                       const char *str,
-                       GFunc add_func,
-                       gpointer user_data)
+process_domain_search(const char *iface, const char *str, GFunc add_func, gpointer user_data)
 {
-	char **searches, **s;
-	char *unescaped, *p;
-	int i;
-
-	g_return_if_fail (str != NULL);
-	g_return_if_fail (add_func != NULL);
-
-	p = unescaped = g_strdup (str);
-	do {
-		p = strstr (p, "\\032");
-		if (!p)
-			break;
-
-		/* Clear the escaped space with real spaces */
-		for (i = 0; i < 4; i++)
-			*p++ = ' ';
-	} while (*p++);
-
-	if (strchr (unescaped, '\\')) {
-		_LOG2W (LOGD_DHCP, iface, "  invalid domain search: '%s'", unescaped);
-		goto out;
-	}
-
-	searches = g_strsplit (unescaped, " ", 0);
-	for (s = searches; *s; s++) {
-		if (strlen (*s)) {
-			_LOG2I (LOGD_DHCP, iface, "  domain search '%s'", *s);
-			add_func (*s, user_data);
-		}
-	}
-	g_strfreev (searches);
-
-out:
-	g_free (unescaped);
+    gs_free const char **searches  = NULL;
+    gs_free char *       unescaped = NULL;
+    const char **        s;
+    char *               p;
+    int                  i;
+
+    g_return_if_fail(str != NULL);
+    g_return_if_fail(add_func != NULL);
+
+    unescaped = g_strdup(str);
+
+    p = unescaped;
+    do {
+        p = strstr(p, "\\032");
+        if (!p)
+            break;
+
+        /* Clear the escaped space with real spaces */
+        for (i = 0; i < 4; i++)
+            *p++ = ' ';
+    } while (*p++);
+
+    if (strchr(unescaped, '\\')) {
+        _LOG2W(LOGD_DHCP, iface, "  invalid domain search: '%s'", unescaped);
+        return;
+    }
+
+    searches = nm_utils_strsplit_set(unescaped, " ");
+    for (s = searches; searches && *s; s++) {
+        _LOG2I(LOGD_DHCP, iface, "  domain search '%s'", *s);
+        add_func((gpointer) *s, user_data);
+    }
 }
 
 static void
-ip4_add_domain_search (gpointer data, gpointer user_data)
+ip4_add_domain_search(gpointer data, gpointer user_data)
 {
-	nm_ip4_config_add_search (NM_IP4_CONFIG (user_data), (const char *) data);
+    nm_ip4_config_add_search(NM_IP4_CONFIG(user_data), (const char *) data);
 }
 
 NMIP4Config *
-nm_dhcp_utils_ip4_config_from_options (NMDedupMultiIndex *multi_idx,
-                                       int ifindex,
-                                       const char *iface,
-                                       GHashTable *options,
-                                       guint32 route_table,
-                                       guint32 route_metric)
+nm_dhcp_utils_ip4_config_from_options(NMDedupMultiIndex *multi_idx,
+                                      int                ifindex,
+                                      const char *       iface,
+                                      GHashTable *       options,
+                                      guint32            route_table,
+                                      guint32            route_metric)
 {
-	NMIP4Config *ip4_config = NULL;
-	guint32 tmp_addr;
-	in_addr_t addr;
-	NMPlatformIP4Address address;
-	char *str = NULL;
-	gboolean gateway_has = FALSE;
-	guint32 gateway = 0;
-	guint8 plen = 0;
-	char sbuf[NM_UTILS_INET_ADDRSTRLEN];
-
-	g_return_val_if_fail (options != NULL, NULL);
-
-	ip4_config = nm_ip4_config_new (multi_idx, ifindex);
-	memset (&address, 0, sizeof (address));
-	address.timestamp = nm_utils_get_monotonic_timestamp_sec ();
-
-	str = g_hash_table_lookup (options, "ip_address");
-	if (str && (inet_pton (AF_INET, str, &addr) > 0))
-		_LOG2I (LOGD_DHCP4, iface, "  address %s", str);
-	else
-		goto error;
-
-	str = g_hash_table_lookup (options, "subnet_mask");
-	if (str && (inet_pton (AF_INET, str, &tmp_addr) > 0)) {
-		plen = nm_utils_ip4_netmask_to_prefix (tmp_addr);
-		_LOG2I (LOGD_DHCP4, iface, "  plen %d (%s)", plen, str);
-	} else {
-		/* Get default netmask for the IP according to appropriate class. */
-		plen = _nm_utils_ip4_get_default_prefix (addr);
-		_LOG2I (LOGD_DHCP4, iface, "  plen %d (default)", plen);
-	}
-	nm_platform_ip4_address_set_addr (&address, addr, plen);
-
-	/* Routes: if the server returns classless static routes, we MUST ignore
-	 * the 'static_routes' option.
-	 */
-	if (!ip4_process_classless_routes (iface, options, route_table, route_metric, ip4_config, &gateway))
-		process_classful_routes (iface, options, route_table, route_metric, ip4_config);
-
-	if (gateway) {
-		_LOG2I (LOGD_DHCP4, iface, "  gateway %s", _nm_utils_inet4_ntop (gateway, sbuf));
-		gateway_has = TRUE;
-	} else {
-		/* If the gateway wasn't provided as a classless static route with a
-		 * subnet length of 0, try to find it using the old-style 'routers' option.
-		 */
-		str = g_hash_table_lookup (options, "routers");
-		if (str) {
-			char **routers = g_strsplit (str, " ", 0);
-			char **s;
-
-			for (s = routers; *s; s++) {
-				/* FIXME: how to handle multiple routers? */
-				if (inet_pton (AF_INET, *s, &gateway) > 0) {
-					_LOG2I (LOGD_DHCP4, iface, "  gateway %s", *s);
-					gateway_has = TRUE;
-					break;
-				} else
-					_LOG2W (LOGD_DHCP4, iface, "ignoring invalid gateway '%s'", *s);
-			}
-			g_strfreev (routers);
-		}
-	}
-
-	if (gateway_has) {
-		const NMPlatformIP4Route r = {
-			.rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
-			.gateway       = gateway,
-			.table_coerced = nm_platform_route_table_coerce (route_table),
-			.metric        = route_metric,
-		};
-
-		nm_ip4_config_add_route (ip4_config, &r, NULL);
-	}
-
-	str = g_hash_table_lookup (options, "dhcp_lease_time");
-	if (str) {
-		address.lifetime = address.preferred = strtoul (str, NULL, 10);
-		_LOG2I (LOGD_DHCP4, iface, "  lease time %u", address.lifetime);
-	}
-
-	address.addr_source = NM_IP_CONFIG_SOURCE_DHCP;
-	nm_ip4_config_add_address (ip4_config, &address);
-
-	str = g_hash_table_lookup (options, "host_name");
-	if (str)
-		_LOG2I (LOGD_DHCP4, iface, "  hostname '%s'", str);
-
-	str = g_hash_table_lookup (options, "domain_name_servers");
-	if (str) {
-		char **dns = g_strsplit (str, " ", 0);
-		char **s;
-
-		for (s = dns; *s; s++) {
-			if (inet_pton (AF_INET, *s, &tmp_addr) > 0) {
-				if (tmp_addr) {
-					nm_ip4_config_add_nameserver (ip4_config, tmp_addr);
-					_LOG2I (LOGD_DHCP4, iface, "  nameserver '%s'", *s);
-				}
-			} else
-				_LOG2W (LOGD_DHCP4, iface, "ignoring invalid nameserver '%s'", *s);
-		}
-		g_strfreev (dns);
-	}
-
-	str = g_hash_table_lookup (options, "domain_name");
-	if (str) {
-		char **domains = g_strsplit (str, " ", 0);
-		char **s;
-
-		for (s = domains; *s; s++) {
-			_LOG2I (LOGD_DHCP4, iface, "  domain name '%s'", *s);
-			nm_ip4_config_add_domain (ip4_config, *s);
-		}
-		g_strfreev (domains);
-	}
-
-	str = g_hash_table_lookup (options, "domain_search");
-	if (str)
-		process_domain_search (iface, str, ip4_add_domain_search, ip4_config);
-
-	str = g_hash_table_lookup (options, "netbios_name_servers");
-	if (str) {
-		char **nbns = g_strsplit (str, " ", 0);
-		char **s;
-
-		for (s = nbns; *s; s++) {
-			if (inet_pton (AF_INET, *s, &tmp_addr) > 0) {
-				if (tmp_addr) {
-					nm_ip4_config_add_wins (ip4_config, tmp_addr);
-					_LOG2I (LOGD_DHCP4, iface, "  wins '%s'", *s);
-				}
-			} else
-				_LOG2W (LOGD_DHCP4, iface, "ignoring invalid WINS server '%s'", *s);
-		}
-		g_strfreev (nbns);
-	}
-
-	str = g_hash_table_lookup (options, "interface_mtu");
-	if (str) {
-		int int_mtu;
-
-		errno = 0;
-		int_mtu = strtol (str, NULL, 10);
-		if (NM_IN_SET (errno, EINVAL, ERANGE))
-			goto error;
-
-		if (int_mtu > 576)
-			nm_ip4_config_set_mtu (ip4_config, int_mtu, NM_IP_CONFIG_SOURCE_DHCP);
-	}
-
-	str = g_hash_table_lookup (options, "nis_domain");
-	if (str) {
-		_LOG2I (LOGD_DHCP4, iface, "  NIS domain '%s'", str);
-		nm_ip4_config_set_nis_domain (ip4_config, str);
-	}
-
-	str = g_hash_table_lookup (options, "nis_servers");
-	if (str) {
-		char **nis = g_strsplit (str, " ", 0);
-		char **s;
-
-		for (s = nis; *s; s++) {
-			if (inet_pton (AF_INET, *s, &tmp_addr) > 0) {
-				if (tmp_addr) {
-					nm_ip4_config_add_nis_server (ip4_config, tmp_addr);
-					_LOG2I (LOGD_DHCP4, iface, "  nis '%s'", *s);
-				}
-			} else
-				_LOG2W (LOGD_DHCP4, iface, "ignoring invalid NIS server '%s'", *s);
-		}
-		g_strfreev (nis);
-	}
-
-	str = g_hash_table_lookup (options, "vendor_encapsulated_options");
-	nm_ip4_config_set_metered (ip4_config, str && strstr (str, "ANDROID_METERED"));
-
-	return ip4_config;
-
-error:
-	g_object_unref (ip4_config);
-	return NULL;
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    guint32                      tmp_addr;
+    in_addr_t                    addr;
+    NMPlatformIP4Address         address;
+    char *                       str         = NULL;
+    gboolean                     gateway_has = FALSE;
+    guint32                      gateway     = 0;
+    guint8                       plen        = 0;
+    char                         sbuf[NM_UTILS_INET_ADDRSTRLEN];
+
+    g_return_val_if_fail(options != NULL, NULL);
+
+    ip4_config = nm_ip4_config_new(multi_idx, ifindex);
+    memset(&address, 0, sizeof(address));
+    address.timestamp = nm_utils_get_monotonic_timestamp_sec();
+
+    str = g_hash_table_lookup(options, "ip_address");
+    if (str && (inet_pton(AF_INET, str, &addr) > 0))
+        _LOG2I(LOGD_DHCP4, iface, "  address %s", str);
+    else
+        return NULL;
+
+    str = g_hash_table_lookup(options, "subnet_mask");
+    if (str && (inet_pton(AF_INET, str, &tmp_addr) > 0)) {
+        plen = nm_utils_ip4_netmask_to_prefix(tmp_addr);
+        _LOG2I(LOGD_DHCP4, iface, "  plen %d (%s)", plen, str);
+    } else {
+        /* Get default netmask for the IP according to appropriate class. */
+        plen = _nm_utils_ip4_get_default_prefix(addr);
+        _LOG2I(LOGD_DHCP4, iface, "  plen %d (default)", plen);
+    }
+    nm_platform_ip4_address_set_addr(&address, addr, plen);
+
+    /* Routes: if the server returns classless static routes, we MUST ignore
+     * the 'static_routes' option.
+     */
+    if (!ip4_process_classless_routes(iface,
+                                      options,
+                                      route_table,
+                                      route_metric,
+                                      ip4_config,
+                                      &gateway))
+        process_classful_routes(iface, options, route_table, route_metric, ip4_config);
+
+    if (gateway) {
+        _LOG2I(LOGD_DHCP4, iface, "  gateway %s", _nm_utils_inet4_ntop(gateway, sbuf));
+        gateway_has = TRUE;
+    } else {
+        /* If the gateway wasn't provided as a classless static route with a
+         * subnet length of 0, try to find it using the old-style 'routers' option.
+         */
+        str = g_hash_table_lookup(options, "routers");
+        if (str) {
+            gs_free const char **routers = nm_utils_strsplit_set(str, " ");
+            const char **        s;
+
+            for (s = routers; routers && *s; s++) {
+                /* FIXME: how to handle multiple routers? */
+                if (inet_pton(AF_INET, *s, &gateway) > 0) {
+                    _LOG2I(LOGD_DHCP4, iface, "  gateway %s", *s);
+                    gateway_has = TRUE;
+                    break;
+                } else
+                    _LOG2W(LOGD_DHCP4, iface, "ignoring invalid gateway '%s'", *s);
+            }
+        }
+    }
+
+    if (gateway_has) {
+        const NMPlatformIP4Route r = {
+            .rt_source     = NM_IP_CONFIG_SOURCE_DHCP,
+            .gateway       = gateway,
+            .table_coerced = nm_platform_route_table_coerce(route_table),
+            .metric        = route_metric,
+        };
+
+        nm_ip4_config_add_route(ip4_config, &r, NULL);
+    }
+
+    str = g_hash_table_lookup(options, "dhcp_lease_time");
+    if (str) {
+        address.lifetime = address.preferred = strtoul(str, NULL, 10);
+        _LOG2I(LOGD_DHCP4, iface, "  lease time %u", address.lifetime);
+    }
+
+    address.addr_source = NM_IP_CONFIG_SOURCE_DHCP;
+    nm_ip4_config_add_address(ip4_config, &address);
+
+    str = g_hash_table_lookup(options, "host_name");
+    if (str)
+        _LOG2I(LOGD_DHCP4, iface, "  hostname '%s'", str);
+
+    str = g_hash_table_lookup(options, "domain_name_servers");
+    if (str) {
+        gs_free const char **dns = nm_utils_strsplit_set(str, " ");
+        const char **        s;
+
+        for (s = dns; dns && *s; s++) {
+            if (inet_pton(AF_INET, *s, &tmp_addr) > 0) {
+                if (tmp_addr) {
+                    nm_ip4_config_add_nameserver(ip4_config, tmp_addr);
+                    _LOG2I(LOGD_DHCP4, iface, "  nameserver '%s'", *s);
+                }
+            } else
+                _LOG2W(LOGD_DHCP4, iface, "ignoring invalid nameserver '%s'", *s);
+        }
+    }
+
+    str = g_hash_table_lookup(options, "domain_name");
+    if (str) {
+        gs_free const char **domains = nm_utils_strsplit_set(str, " ");
+        const char **        s;
+
+        for (s = domains; domains && *s; s++) {
+            _LOG2I(LOGD_DHCP4, iface, "  domain name '%s'", *s);
+            nm_ip4_config_add_domain(ip4_config, *s);
+        }
+    }
+
+    str = g_hash_table_lookup(options, "domain_search");
+    if (str)
+        process_domain_search(iface, str, ip4_add_domain_search, ip4_config);
+
+    str = g_hash_table_lookup(options, "netbios_name_servers");
+    if (str) {
+        gs_free const char **nbns = nm_utils_strsplit_set(str, " ");
+        const char **        s;
+
+        for (s = nbns; nbns && *s; s++) {
+            if (inet_pton(AF_INET, *s, &tmp_addr) > 0) {
+                if (tmp_addr) {
+                    nm_ip4_config_add_wins(ip4_config, tmp_addr);
+                    _LOG2I(LOGD_DHCP4, iface, "  wins '%s'", *s);
+                }
+            } else
+                _LOG2W(LOGD_DHCP4, iface, "ignoring invalid WINS server '%s'", *s);
+        }
+    }
+
+    str = g_hash_table_lookup(options, "interface_mtu");
+    if (str) {
+        int int_mtu;
+
+        errno   = 0;
+        int_mtu = strtol(str, NULL, 10);
+        if (NM_IN_SET(errno, EINVAL, ERANGE))
+            return NULL;
+
+        if (int_mtu > 576)
+            nm_ip4_config_set_mtu(ip4_config, int_mtu, NM_IP_CONFIG_SOURCE_DHCP);
+    }
+
+    str = g_hash_table_lookup(options, "nis_domain");
+    if (str) {
+        _LOG2I(LOGD_DHCP4, iface, "  NIS domain '%s'", str);
+        nm_ip4_config_set_nis_domain(ip4_config, str);
+    }
+
+    str = g_hash_table_lookup(options, "nis_servers");
+    if (str) {
+        gs_free const char **nis = nm_utils_strsplit_set(str, " ");
+        const char **        s;
+
+        for (s = nis; nis && *s; s++) {
+            if (inet_pton(AF_INET, *s, &tmp_addr) > 0) {
+                if (tmp_addr) {
+                    nm_ip4_config_add_nis_server(ip4_config, tmp_addr);
+                    _LOG2I(LOGD_DHCP4, iface, "  nis '%s'", *s);
+                }
+            } else
+                _LOG2W(LOGD_DHCP4, iface, "ignoring invalid NIS server '%s'", *s);
+        }
+    }
+
+    str = g_hash_table_lookup(options, "vendor_encapsulated_options");
+    nm_ip4_config_set_metered(ip4_config, str && strstr(str, "ANDROID_METERED"));
+
+    return g_steal_pointer(&ip4_config);
 }
 
 /*****************************************************************************/
 
 static void
-ip6_add_domain_search (gpointer data, gpointer user_data)
+ip6_add_domain_search(gpointer data, gpointer user_data)
 {
-	nm_ip6_config_add_search (NM_IP6_CONFIG (user_data), (const char *) data);
+    nm_ip6_config_add_search(NM_IP6_CONFIG(user_data), (const char *) data);
 }
 
 NMPlatformIP6Address
-nm_dhcp_utils_ip6_prefix_from_options (GHashTable *options)
+nm_dhcp_utils_ip6_prefix_from_options(GHashTable *options)
 {
-	gs_strfreev char **split_addr = NULL;
-	NMPlatformIP6Address address = { 0, };
-	struct in6_addr tmp_addr;
-	char *str = NULL;
-	int prefix;
-
-	g_return_val_if_fail (options != NULL, address);
-
-	str = g_hash_table_lookup (options, "ip6_prefix");
-	if (!str)
-		return address;
-
-	split_addr = g_strsplit (str, "/", 2);
-	if (split_addr[0] == NULL && split_addr[1] == NULL) {
-		nm_log_warn (LOGD_DHCP6, "DHCP returned prefix without length '%s'", str);
-		return address;
-	}
-
-	if (!inet_pton (AF_INET6, split_addr[0], &tmp_addr)) {
-		nm_log_warn (LOGD_DHCP6, "DHCP returned invalid prefix '%s'", str);
-		return address;
-	}
-
-	prefix = _nm_utils_ascii_str_to_int64 (split_addr[1], 10, 0, 128, -1);
-	if (prefix < 0) {
-		nm_log_warn (LOGD_DHCP6, "DHCP returned prefix with invalid length '%s'", str);
-		return address;
-	}
-
-	address.address = tmp_addr;
-	address.addr_source = NM_IP_CONFIG_SOURCE_DHCP;
-	address.plen = prefix;
-	address.timestamp = nm_utils_get_monotonic_timestamp_sec ();
-
-	str = g_hash_table_lookup (options, "max_life");
-	if (str)
-		address.lifetime = strtoul (str, NULL, 10);
-
-	str = g_hash_table_lookup (options, "preferred_life");
-	if (str)
-		address.preferred = strtoul (str, NULL, 10);
-
-	return address;
+    gs_strfreev char **  split_addr = NULL;
+    NMPlatformIP6Address address    = {
+        0,
+    };
+    struct in6_addr tmp_addr;
+    char *          str = NULL;
+    int             prefix;
+
+    g_return_val_if_fail(options != NULL, address);
+
+    str = g_hash_table_lookup(options, "ip6_prefix");
+    if (!str)
+        return address;
+
+    split_addr = g_strsplit(str, "/", 2);
+    if (split_addr[0] == NULL && split_addr[1] == NULL) {
+        nm_log_warn(LOGD_DHCP6, "DHCP returned prefix without length '%s'", str);
+        return address;
+    }
+
+    if (!inet_pton(AF_INET6, split_addr[0], &tmp_addr)) {
+        nm_log_warn(LOGD_DHCP6, "DHCP returned invalid prefix '%s'", str);
+        return address;
+    }
+
+    prefix = _nm_utils_ascii_str_to_int64(split_addr[1], 10, 0, 128, -1);
+    if (prefix < 0) {
+        nm_log_warn(LOGD_DHCP6, "DHCP returned prefix with invalid length '%s'", str);
+        return address;
+    }
+
+    address.address     = tmp_addr;
+    address.addr_source = NM_IP_CONFIG_SOURCE_DHCP;
+    address.plen        = prefix;
+    address.timestamp   = nm_utils_get_monotonic_timestamp_sec();
+
+    str = g_hash_table_lookup(options, "max_life");
+    if (str)
+        address.lifetime = strtoul(str, NULL, 10);
+
+    str = g_hash_table_lookup(options, "preferred_life");
+    if (str)
+        address.preferred = strtoul(str, NULL, 10);
+
+    return address;
 }
 
 NMIP6Config *
-nm_dhcp_utils_ip6_config_from_options (NMDedupMultiIndex *multi_idx,
-                                       int ifindex,
-                                       const char *iface,
-                                       GHashTable *options,
-                                       gboolean info_only)
+nm_dhcp_utils_ip6_config_from_options(NMDedupMultiIndex *multi_idx,
+                                      int                ifindex,
+                                      const char *       iface,
+                                      GHashTable *       options,
+                                      gboolean           info_only)
 {
-	NMIP6Config *ip6_config = NULL;
-	struct in6_addr tmp_addr;
-	NMPlatformIP6Address address;
-	char *str = NULL;
-
-	g_return_val_if_fail (options != NULL, NULL);
-
-	memset (&address, 0, sizeof (address));
-	address.plen = 128;
-	address.timestamp = nm_utils_get_monotonic_timestamp_sec ();
-
-	ip6_config = nm_ip6_config_new (multi_idx, ifindex);
-
-	str = g_hash_table_lookup (options, "max_life");
-	if (str) {
-		address.lifetime = strtoul (str, NULL, 10);
-		_LOG2I (LOGD_DHCP6, iface, "  valid_lft %u", address.lifetime);
-	}
-
-	str = g_hash_table_lookup (options, "preferred_life");
-	if (str) {
-		address.preferred = strtoul (str, NULL, 10);
-		_LOG2I (LOGD_DHCP6, iface, "  preferred_lft %u", address.preferred);
-	}
-
-	str = g_hash_table_lookup (options, "ip6_address");
-	if (str) {
-		if (!inet_pton (AF_INET6, str, &tmp_addr)) {
-			_LOG2W (LOGD_DHCP6, iface, "(%s): DHCP returned invalid address '%s'",
-			        iface, str);
-			goto error;
-		}
-
-		address.address = tmp_addr;
-		address.addr_source = NM_IP_CONFIG_SOURCE_DHCP;
-		nm_ip6_config_add_address (ip6_config, &address);
-		_LOG2I (LOGD_DHCP6, iface, "  address %s", str);
-	} else if (info_only == FALSE) {
-		/* No address in Managed mode is a hard error */
-		goto error;
-	}
-
-	str = g_hash_table_lookup (options, "host_name");
-	if (str)
-		_LOG2I (LOGD_DHCP6, iface, "  hostname '%s'", str);
-
-	str = g_hash_table_lookup (options, "dhcp6_name_servers");
-	if (str) {
-		char **dns = g_strsplit (str, " ", 0);
-		char **s;
-
-		for (s = dns; *s; s++) {
-			if (inet_pton (AF_INET6, *s, &tmp_addr) > 0) {
-				if (!IN6_IS_ADDR_UNSPECIFIED (&tmp_addr)) {
-					nm_ip6_config_add_nameserver (ip6_config, &tmp_addr);
-					_LOG2I (LOGD_DHCP6, iface, "  nameserver '%s'", *s);
-				}
-			} else
-				_LOG2W (LOGD_DHCP6, iface, "ignoring invalid nameserver '%s'", *s);
-		}
-		g_strfreev (dns);
-	}
-
-	str = g_hash_table_lookup (options, "dhcp6_domain_search");
-	if (str)
-		process_domain_search (iface, str, ip6_add_domain_search, ip6_config);
-
-	return ip6_config;
-
-error:
-	g_object_unref (ip6_config);
-	return NULL;
+    gs_unref_object NMIP6Config *ip6_config = NULL;
+    struct in6_addr              tmp_addr;
+    NMPlatformIP6Address         address;
+    char *                       str = NULL;
+
+    g_return_val_if_fail(options != NULL, NULL);
+
+    memset(&address, 0, sizeof(address));
+    address.plen      = 128;
+    address.timestamp = nm_utils_get_monotonic_timestamp_sec();
+
+    ip6_config = nm_ip6_config_new(multi_idx, ifindex);
+
+    str = g_hash_table_lookup(options, "max_life");
+    if (str) {
+        address.lifetime = strtoul(str, NULL, 10);
+        _LOG2I(LOGD_DHCP6, iface, "  valid_lft %u", address.lifetime);
+    }
+
+    str = g_hash_table_lookup(options, "preferred_life");
+    if (str) {
+        address.preferred = strtoul(str, NULL, 10);
+        _LOG2I(LOGD_DHCP6, iface, "  preferred_lft %u", address.preferred);
+    }
+
+    str = g_hash_table_lookup(options, "ip6_address");
+    if (str) {
+        if (!inet_pton(AF_INET6, str, &tmp_addr)) {
+            _LOG2W(LOGD_DHCP6, iface, "(%s): DHCP returned invalid address '%s'", iface, str);
+            return NULL;
+        }
+
+        address.address     = tmp_addr;
+        address.addr_source = NM_IP_CONFIG_SOURCE_DHCP;
+        nm_ip6_config_add_address(ip6_config, &address);
+        _LOG2I(LOGD_DHCP6, iface, "  address %s", str);
+    } else if (info_only == FALSE) {
+        /* No address in Managed mode is a hard error */
+        return NULL;
+    }
+
+    str = g_hash_table_lookup(options, "host_name");
+    if (str)
+        _LOG2I(LOGD_DHCP6, iface, "  hostname '%s'", str);
+
+    str = g_hash_table_lookup(options, "dhcp6_name_servers");
+    if (str) {
+        gs_free const char **dns = nm_utils_strsplit_set(str, " ");
+        const char **        s;
+
+        for (s = dns; dns && *s; s++) {
+            if (inet_pton(AF_INET6, *s, &tmp_addr) > 0) {
+                if (!IN6_IS_ADDR_UNSPECIFIED(&tmp_addr)) {
+                    nm_ip6_config_add_nameserver(ip6_config, &tmp_addr);
+                    _LOG2I(LOGD_DHCP6, iface, "  nameserver '%s'", *s);
+                }
+            } else
+                _LOG2W(LOGD_DHCP6, iface, "ignoring invalid nameserver '%s'", *s);
+        }
+    }
+
+    str = g_hash_table_lookup(options, "dhcp6_domain_search");
+    if (str)
+        process_domain_search(iface, str, ip6_add_domain_search, ip6_config);
+
+    return g_steal_pointer(&ip6_config);
 }
 
 char *
-nm_dhcp_utils_duid_to_string (GBytes *duid)
+nm_dhcp_utils_duid_to_string(GBytes *duid)
 {
-	gconstpointer data;
-	gsize len;
+    gconstpointer data;
+    gsize         len;
 
-	g_return_val_if_fail (duid, NULL);
+    g_return_val_if_fail(duid, NULL);
 
-	data = g_bytes_get_data (duid, &len);
-	return nm_utils_bin2hexstr_full (data, len, ':', FALSE, NULL);
+    data = g_bytes_get_data(duid, &len);
+    return nm_utils_bin2hexstr_full(data, len, ':', FALSE, NULL);
 }
 
 /**
@@ -720,34 +732,34 @@ nm_dhcp_utils_duid_to_string (GBytes *duid)
  * to the DHCP server.
  */
 GBytes *
-nm_dhcp_utils_client_id_string_to_bytes (const char *client_id)
+nm_dhcp_utils_client_id_string_to_bytes(const char *client_id)
 {
-	GBytes *bytes = NULL;
-	guint len;
-	char *c;
-
-	g_return_val_if_fail (client_id && client_id[0], NULL);
-
-	/* Try as hex encoded */
-	if (strchr (client_id, ':')) {
-		bytes = nm_utils_hexstr2bin (client_id);
-
-		/* the result must be at least two bytes long,
-		 * because @client_id contains a delimiter
-		 * but nm_utils_hexstr2bin() does not allow
-		 * leading nor trailing delimiters. */
-		nm_assert (!bytes || g_bytes_get_size (bytes) >= 2);
-	}
-	if (!bytes) {
-		/* Fall back to string */
-		len = strlen (client_id);
-		c = g_malloc (len + 1);
-		c[0] = 0;  /* type: non-hardware address per RFC 2132 section 9.14 */
-		memcpy (c + 1, client_id, len);
-		bytes = g_bytes_new_take (c, len + 1);
-	}
-
-	return bytes;
+    GBytes *bytes = NULL;
+    guint   len;
+    char *  c;
+
+    g_return_val_if_fail(client_id && client_id[0], NULL);
+
+    /* Try as hex encoded */
+    if (strchr(client_id, ':')) {
+        bytes = nm_utils_hexstr2bin(client_id);
+
+        /* the result must be at least two bytes long,
+         * because @client_id contains a delimiter
+         * but nm_utils_hexstr2bin() does not allow
+         * leading nor trailing delimiters. */
+        nm_assert(!bytes || g_bytes_get_size(bytes) >= 2);
+    }
+    if (!bytes) {
+        /* Fall back to string */
+        len  = strlen(client_id);
+        c    = g_malloc(len + 1);
+        c[0] = 0; /* type: non-hardware address per RFC 2132 section 9.14 */
+        memcpy(c + 1, client_id, len);
+        bytes = g_bytes_new_take(c, len + 1);
+    }
+
+    return bytes;
 }
 
 /**
@@ -765,40 +777,60 @@ nm_dhcp_utils_client_id_string_to_bytes (const char *client_id)
  * Returns: TRUE if the lease file already exists, FALSE otherwise.
  */
 gboolean
-nm_dhcp_utils_get_leasefile_path (int addr_family,
-                                  const char *plugin_name,
-                                  const char *iface,
-                                  const char *uuid,
-                                  char **out_leasefile_path)
+nm_dhcp_utils_get_leasefile_path(int         addr_family,
+                                 const char *plugin_name,
+                                 const char *iface,
+                                 const char *uuid,
+                                 char **     out_leasefile_path)
 {
-	gs_free char *rundir_path = NULL;
-	gs_free char *statedir_path = NULL;
-
-	rundir_path = g_strdup_printf (NMRUNDIR "/%s%s-%s-%s.lease",
-	                               plugin_name,
-	                               addr_family == AF_INET6 ? "6" : "",
-	                               uuid,
-	                               iface);
-
-	if (g_file_test (rundir_path, G_FILE_TEST_EXISTS)) {
-		*out_leasefile_path = g_steal_pointer (&rundir_path);
-		return TRUE;
-	}
-
-	statedir_path = g_strdup_printf (NMSTATEDIR "/%s%s-%s-%s.lease",
-	                                 plugin_name,
-	                                 addr_family == AF_INET6 ? "6" : "",
-	                                 uuid,
-	                                 iface);
-
-	if (g_file_test (statedir_path, G_FILE_TEST_EXISTS)) {
-		*out_leasefile_path = g_steal_pointer (&statedir_path);
-		return TRUE;
-	}
-
-	if (nm_config_get_configure_and_quit (nm_config_get ()) == NM_CONFIG_CONFIGURE_AND_QUIT_INITRD)
-		*out_leasefile_path = g_steal_pointer (&rundir_path);
-	else
-		*out_leasefile_path = g_steal_pointer (&statedir_path);
-	return FALSE;
+    gs_free char *rundir_path   = NULL;
+    gs_free char *statedir_path = NULL;
+
+    rundir_path = g_strdup_printf(NMRUNDIR "/%s%s-%s-%s.lease",
+                                  plugin_name,
+                                  addr_family == AF_INET6 ? "6" : "",
+                                  uuid,
+                                  iface);
+
+    if (g_file_test(rundir_path, G_FILE_TEST_EXISTS)) {
+        *out_leasefile_path = g_steal_pointer(&rundir_path);
+        return TRUE;
+    }
+
+    statedir_path = g_strdup_printf(NMSTATEDIR "/%s%s-%s-%s.lease",
+                                    plugin_name,
+                                    addr_family == AF_INET6 ? "6" : "",
+                                    uuid,
+                                    iface);
+
+    if (g_file_test(statedir_path, G_FILE_TEST_EXISTS)) {
+        *out_leasefile_path = g_steal_pointer(&statedir_path);
+        return TRUE;
+    }
+
+    if (nm_config_get_configure_and_quit(nm_config_get()) == NM_CONFIG_CONFIGURE_AND_QUIT_INITRD)
+        *out_leasefile_path = g_steal_pointer(&rundir_path);
+    else
+        *out_leasefile_path = g_steal_pointer(&statedir_path);
+    return FALSE;
+}
+
+char *
+nm_dhcp_utils_get_dhcp6_event_id(GHashTable *lease)
+{
+    const char *start;
+    const char *iaid;
+
+    if (!lease)
+        return NULL;
+
+    iaid = g_hash_table_lookup(lease, "iaid");
+    if (!iaid)
+        return NULL;
+
+    start = g_hash_table_lookup(lease, "life_starts");
+    if (!start)
+        return NULL;
+
+    return g_strdup_printf("%s|%s", iaid, start);
 }
diff --git a/src/dhcp/nm-dhcp-utils.h b/src/dhcp/nm-dhcp-utils.h
index ecb91809..c72d9617 100644
--- a/src/dhcp/nm-dhcp-utils.h
+++ b/src/dhcp/nm-dhcp-utils.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2014 Red Hat, Inc.
  */
@@ -11,32 +11,33 @@
 #include "nm-ip4-config.h"
 #include "nm-ip6-config.h"
 
-NMIP4Config *nm_dhcp_utils_ip4_config_from_options (struct _NMDedupMultiIndex *multi_idx,
-                                                    int ifindex,
-                                                    const char *iface,
-                                                    GHashTable *options,
-                                                    guint32 route_table,
-                                                    guint32 route_metric);
+NMIP4Config *nm_dhcp_utils_ip4_config_from_options(struct _NMDedupMultiIndex *multi_idx,
+                                                   int                        ifindex,
+                                                   const char *               iface,
+                                                   GHashTable *               options,
+                                                   guint32                    route_table,
+                                                   guint32                    route_metric);
 
-NMIP6Config *nm_dhcp_utils_ip6_config_from_options (struct _NMDedupMultiIndex *multi_idx,
-                                                    int ifindex,
-                                                    const char *iface,
-                                                    GHashTable *options,
-                                                    gboolean info_only);
+NMIP6Config *nm_dhcp_utils_ip6_config_from_options(struct _NMDedupMultiIndex *multi_idx,
+                                                   int                        ifindex,
+                                                   const char *               iface,
+                                                   GHashTable *               options,
+                                                   gboolean                   info_only);
 
-NMPlatformIP6Address nm_dhcp_utils_ip6_prefix_from_options (GHashTable *options);
+NMPlatformIP6Address nm_dhcp_utils_ip6_prefix_from_options(GHashTable *options);
 
-char *nm_dhcp_utils_duid_to_string (GBytes *duid);
+char *nm_dhcp_utils_duid_to_string(GBytes *duid);
 
-GBytes *nm_dhcp_utils_client_id_string_to_bytes (const char *client_id);
+GBytes *nm_dhcp_utils_client_id_string_to_bytes(const char *client_id);
 
-gboolean nm_dhcp_utils_get_leasefile_path (int addr_family,
-                                           const char *plugin_name,
-                                           const char *iface,
-                                           const char *uuid,
-                                           char **out_leasefile_path);
+gboolean nm_dhcp_utils_get_leasefile_path(int         addr_family,
+                                          const char *plugin_name,
+                                          const char *iface,
+                                          const char *uuid,
+                                          char **     out_leasefile_path);
 
-char **nm_dhcp_parse_search_list (guint8 *data, size_t n_data);
+char **nm_dhcp_parse_search_list(guint8 *data, size_t n_data);
 
-#endif /* __NETWORKMANAGER_DHCP_UTILS_H__ */
+char *nm_dhcp_utils_get_dhcp6_event_id(GHashTable *lease);
 
+#endif /* __NETWORKMANAGER_DHCP_UTILS_H__ */
diff --git a/src/dhcp/tests/test-dhcp-dhclient.c b/src/dhcp/tests/test-dhcp-dhclient.c
index d51bcae5..da24f3c5 100644
--- a/src/dhcp/tests/test-dhcp-dhclient.c
+++ b/src/dhcp/tests/test-dhcp-dhclient.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2010 Red Hat, Inc.
  */
@@ -20,1234 +20,1322 @@
 
 #include "nm-test-utils-core.h"
 
-#define TEST_DIR             NM_BUILD_SRCDIR"/src/dhcp/tests"
-#define TEST_MUDURL          "https://example.com/mud.json"
+#define TEST_DIR    NM_BUILD_SRCDIR "/src/dhcp/tests"
+#define TEST_MUDURL "https://example.com/mud.json"
 
 static void
-test_config (const char *orig,
-             const char *expected,
-             int addr_family,
-             const char *hostname,
-             guint32 timeout,
-             gboolean use_fqdn,
-             NMDhcpHostnameFlags hostname_flags,
-             const char *dhcp_client_id,
-             GBytes *expected_new_client_id,
-             const char *iface,
-             const char *anycast_addr,
-             const char *mud_url)
+test_config(const char *        orig,
+            const char *        expected,
+            int                 addr_family,
+            const char *        hostname,
+            guint32             timeout,
+            gboolean            use_fqdn,
+            NMDhcpHostnameFlags hostname_flags,
+            const char *        dhcp_client_id,
+            GBytes *            expected_new_client_id,
+            const char *        iface,
+            const char *        anycast_addr,
+            const char *        mud_url)
 {
-	gs_free char *new = NULL;
-	gs_unref_bytes GBytes *client_id = NULL;
-	gs_unref_bytes GBytes *new_client_id = NULL;
-
-	if (dhcp_client_id) {
-		client_id = nm_dhcp_utils_client_id_string_to_bytes (dhcp_client_id);
-		g_assert (client_id);
-	}
-
-	new = nm_dhcp_dhclient_create_config (iface,
-	                                      addr_family,
-	                                      client_id,
-	                                      anycast_addr,
-	                                      hostname,
-	                                      timeout,
-	                                      use_fqdn,
-	                                      hostname_flags,
-	                                      mud_url,
-	                                      "/path/to/dhclient.conf",
-	                                      orig,
-	                                      &new_client_id);
-	g_assert (new != NULL);
-
-	if (!nm_streq (new, expected)) {
-		g_message ("\n* OLD ---------------------------------\n"
-		           "%s"
-		           "\n- NEW -----------------------------------\n"
-		           "%s"
-		           "\n+ EXPECTED ++++++++++++++++++++++++++++++\n"
-		           "%s"
-		           "\n^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n",
-		           orig, new, expected);
-	}
-	g_assert_cmpstr (new, ==, expected);
-
-	if (expected_new_client_id) {
-		g_assert (new_client_id);
-		g_assert (g_bytes_equal (new_client_id, expected_new_client_id));
-	} else
-		g_assert (new_client_id == NULL);
+    gs_free char *new                    = NULL;
+    gs_unref_bytes GBytes *client_id     = NULL;
+    gs_unref_bytes GBytes *new_client_id = NULL;
+
+    if (dhcp_client_id) {
+        client_id = nm_dhcp_utils_client_id_string_to_bytes(dhcp_client_id);
+        g_assert(client_id);
+    }
+
+    new = nm_dhcp_dhclient_create_config(iface,
+                                         addr_family,
+                                         client_id,
+                                         anycast_addr,
+                                         hostname,
+                                         timeout,
+                                         use_fqdn,
+                                         hostname_flags,
+                                         mud_url,
+                                         NULL,
+                                         "/path/to/dhclient.conf",
+                                         orig,
+                                         &new_client_id);
+    g_assert(new != NULL);
+
+    if (!nm_streq(new, expected)) {
+        g_message("\n* OLD ---------------------------------\n"
+                  "%s"
+                  "\n- NEW -----------------------------------\n"
+                  "%s"
+                  "\n+ EXPECTED ++++++++++++++++++++++++++++++\n"
+                  "%s"
+                  "\n^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n",
+                  orig,
+                  new,
+                  expected);
+    }
+    g_assert_cmpstr(new, ==, expected);
+
+    if (expected_new_client_id) {
+        g_assert(new_client_id);
+        g_assert(g_bytes_equal(new_client_id, expected_new_client_id));
+    } else
+        g_assert(new_client_id == NULL);
 }
 
 /*****************************************************************************/
 
-static const char *orig_missing_expected = \
-	"# Created by NetworkManager\n"
-	"\n\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *orig_missing_expected =
+    "# Created by NetworkManager\n"
+    "\n\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_orig_missing (void)
+test_orig_missing(void)
 {
-	test_config (NULL,
-	             orig_missing_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL, NULL, "eth0", NULL, NULL);
+    test_config(NULL,
+                orig_missing_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-
-static const char *orig_missing_add_mud_url_expected = \
-	"# Created by NetworkManager\n"
-	"\n"
-	"option mudurl code 161 = text;\n"
-	"send mudurl \"https://example.com/mud.json\";\n\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *orig_missing_add_mud_url_expected =
+    "# Created by NetworkManager\n"
+    "\n"
+    "option mudurl code 161 = text;\n"
+    "send mudurl \"https://example.com/mud.json\";\n\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_orig_missing_add_mud_url (void)
+test_orig_missing_add_mud_url(void)
 {
-	test_config (NULL,
-	             orig_missing_add_mud_url_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL, NULL, "eth0", NULL, TEST_MUDURL);
+    test_config(NULL,
+                orig_missing_add_mud_url_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                TEST_MUDURL);
 }
 
 /*****************************************************************************/
 
-static const char *override_client_id_orig = \
-	"send dhcp-client-identifier 00:30:04:20:7A:08;\n";
-
-static const char *override_client_id_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n"
-	"send dhcp-client-identifier 11:22:33:44:55:66; # added by NetworkManager\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *override_client_id_orig = "send dhcp-client-identifier 00:30:04:20:7A:08;\n";
+
+static const char *override_client_id_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n"
+    "send dhcp-client-identifier 11:22:33:44:55:66; # added by NetworkManager\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_override_client_id (void)
+test_override_client_id(void)
 {
-	test_config (override_client_id_orig, override_client_id_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             "11:22:33:44:55:66",
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(override_client_id_orig,
+                override_client_id_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                "11:22:33:44:55:66",
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *quote_client_id_expected = \
-	"# Created by NetworkManager\n"
-	"\n"
-	"send dhcp-client-identifier \"\\x00abcd\"; # added by NetworkManager\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *quote_client_id_expected =
+    "# Created by NetworkManager\n"
+    "\n"
+    "send dhcp-client-identifier \"\\x00abcd\"; # added by NetworkManager\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_quote_client_id (void)
+test_quote_client_id(void)
 {
-	test_config (NULL, quote_client_id_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             "abcd",
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(NULL,
+                quote_client_id_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                "abcd",
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *quote_client_id_expected_2 = \
-	"# Created by NetworkManager\n"
-	"\n"
-	"send dhcp-client-identifier 00:61:5c:62:63; # added by NetworkManager\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *quote_client_id_expected_2 =
+    "# Created by NetworkManager\n"
+    "\n"
+    "send dhcp-client-identifier 00:61:5c:62:63; # added by NetworkManager\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_quote_client_id_2 (void)
+test_quote_client_id_2(void)
 {
-	test_config (NULL, quote_client_id_expected_2,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             "a\\bc",
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(NULL,
+                quote_client_id_expected_2,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                "a\\bc",
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *hex_zero_client_id_expected = \
-	"# Created by NetworkManager\n"
-	"\n"
-	"send dhcp-client-identifier 00:11:22:33; # added by NetworkManager\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *hex_zero_client_id_expected =
+    "# Created by NetworkManager\n"
+    "\n"
+    "send dhcp-client-identifier 00:11:22:33; # added by NetworkManager\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_hex_zero_client_id (void)
+test_hex_zero_client_id(void)
 {
-	test_config (NULL, hex_zero_client_id_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             "00:11:22:33",
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(NULL,
+                hex_zero_client_id_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                "00:11:22:33",
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *ascii_client_id_expected = \
-	"# Created by NetworkManager\n"
-	"\n"
-	"send dhcp-client-identifier \"\\x00qb:cd:ef:12:34:56\"; # added by NetworkManager\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *ascii_client_id_expected =
+    "# Created by NetworkManager\n"
+    "\n"
+    "send dhcp-client-identifier \"\\x00qb:cd:ef:12:34:56\"; # added by NetworkManager\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_ascii_client_id (void)
+test_ascii_client_id(void)
 {
-	test_config (NULL, ascii_client_id_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             "qb:cd:ef:12:34:56",
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(NULL,
+                ascii_client_id_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                "qb:cd:ef:12:34:56",
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *hex_single_client_id_expected = \
-	"# Created by NetworkManager\n"
-	"\n"
-	"send dhcp-client-identifier ab:cd:0e:12:34:56; # added by NetworkManager\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *hex_single_client_id_expected =
+    "# Created by NetworkManager\n"
+    "\n"
+    "send dhcp-client-identifier ab:cd:0e:12:34:56; # added by NetworkManager\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_hex_single_client_id (void)
+test_hex_single_client_id(void)
 {
-	test_config (NULL, hex_single_client_id_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             "ab:cd:e:12:34:56",
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(NULL,
+                hex_single_client_id_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                "ab:cd:e:12:34:56",
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *existing_hex_client_id_orig = \
-	"send dhcp-client-identifier 10:30:04:20:7A:08;\n";
-
-static const char *existing_hex_client_id_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n"
-	"send dhcp-client-identifier 10:30:04:20:7A:08;\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *existing_hex_client_id_orig = "send dhcp-client-identifier 10:30:04:20:7A:08;\n";
+
+static const char *existing_hex_client_id_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n"
+    "send dhcp-client-identifier 10:30:04:20:7A:08;\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_existing_hex_client_id (void)
+test_existing_hex_client_id(void)
 {
-	gs_unref_bytes GBytes *new_client_id = NULL;
-	const guint8 bytes[] = { 0x10, 0x30, 0x04, 0x20, 0x7A, 0x08 };
-
-	new_client_id = g_bytes_new (bytes, sizeof (bytes));
-	test_config (existing_hex_client_id_orig, existing_hex_client_id_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             new_client_id,
-	             "eth0",
-	             NULL,
-	             NULL);
+    gs_unref_bytes GBytes *new_client_id = NULL;
+    const guint8           bytes[]       = {0x10, 0x30, 0x04, 0x20, 0x7A, 0x08};
+
+    new_client_id = g_bytes_new(bytes, sizeof(bytes));
+    test_config(existing_hex_client_id_orig,
+                existing_hex_client_id_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                new_client_id,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *existing_escaped_client_id_orig = \
-	"send dhcp-client-identifier \"\\044test\\xfe\";\n";
-
-static const char *existing_escaped_client_id_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n"
-	"send dhcp-client-identifier \"\\044test\\xfe\";\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *existing_escaped_client_id_orig =
+    "send dhcp-client-identifier \"\\044test\\xfe\";\n";
+
+static const char *existing_escaped_client_id_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n"
+    "send dhcp-client-identifier \"\\044test\\xfe\";\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_existing_escaped_client_id (void)
+test_existing_escaped_client_id(void)
 {
-	gs_unref_bytes GBytes *new_client_id = NULL;
-
-	new_client_id = g_bytes_new ("$test\xfe", 6);
-	test_config (existing_escaped_client_id_orig, existing_escaped_client_id_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             new_client_id,
-	             "eth0",
-	             NULL,
-	             NULL);
+    gs_unref_bytes GBytes *new_client_id = NULL;
+
+    new_client_id = g_bytes_new("$test\xfe", 6);
+    test_config(existing_escaped_client_id_orig,
+                existing_escaped_client_id_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                new_client_id,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
 #define EACID "qb:cd:ef:12:34:56"
 
-static const char *existing_ascii_client_id_orig = \
-	"send dhcp-client-identifier \"\\x00" EACID "\";\n";
-
-static const char *existing_ascii_client_id_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n"
-	"send dhcp-client-identifier \"\\x00" EACID "\";\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *existing_ascii_client_id_orig =
+    "send dhcp-client-identifier \"\\x00" EACID "\";\n";
+
+static const char *existing_ascii_client_id_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n"
+    "send dhcp-client-identifier \"\\x00" EACID "\";\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_existing_ascii_client_id (void)
+test_existing_ascii_client_id(void)
 {
-	gs_unref_bytes GBytes *new_client_id = NULL;
-	char buf[NM_STRLEN (EACID) + 1] = { 0 };
-
-	memcpy (buf + 1, EACID, NM_STRLEN (EACID));
-	new_client_id = g_bytes_new (buf, sizeof (buf));
-	test_config (existing_ascii_client_id_orig, existing_ascii_client_id_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             new_client_id,
-	             "eth0",
-	             NULL,
-	             NULL);
+    gs_unref_bytes GBytes *new_client_id             = NULL;
+    char                   buf[NM_STRLEN(EACID) + 1] = {0};
+
+    memcpy(buf + 1, EACID, NM_STRLEN(EACID));
+    new_client_id = g_bytes_new(buf, sizeof(buf));
+    test_config(existing_ascii_client_id_orig,
+                existing_ascii_client_id_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                new_client_id,
+                "eth0",
+                NULL,
+                NULL);
 }
 /*****************************************************************************/
 
-static const char *fqdn_expected = \
-	"# Created by NetworkManager\n"
-	"\n"
-	"send fqdn.fqdn \"foo.bar.com\"; # added by NetworkManager\n"
-	"send fqdn.encoded on;\n"
-	"send fqdn.server-update off;\n"
-	"send fqdn.no-client-update on;\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n\n";
+static const char *fqdn_expected =
+    "# Created by NetworkManager\n"
+    "\n"
+    "send fqdn.fqdn \"foo.bar.com\"; # added by NetworkManager\n"
+    "send fqdn.encoded on;\n"
+    "send fqdn.server-update off;\n"
+    "send fqdn.no-client-update on;\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n\n";
 
 static void
-test_fqdn (void)
+test_fqdn(void)
 {
-	test_config (NULL, fqdn_expected,
-	             AF_INET, "foo.bar.com", 0,
-	             TRUE,
-	               NM_DHCP_HOSTNAME_FLAG_FQDN_ENCODED
-	             | NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE,
-	             NULL,
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(NULL,
+                fqdn_expected,
+                AF_INET,
+                "foo.bar.com",
+                0,
+                TRUE,
+                NM_DHCP_HOSTNAME_FLAG_FQDN_ENCODED | NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
-static const char *fqdn_options_override_orig = \
-	"\n"
-	"send fqdn.fqdn \"foobar.com\"\n"    /* NM must ignore this ... */
-	"send fqdn.encoded off;\n"           /* ... and honor these */
-	"send fqdn.server-update off;\n";
-
-static const char *fqdn_options_override_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n"
-	"send fqdn.fqdn \"example2.com\"; # added by NetworkManager\n"
-	"send fqdn.encoded off;\n"
-	"send fqdn.server-update on;\n"
-	"send fqdn.no-client-update off;\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n"
-	"# FQDN options from /path/to/dhclient.conf\n"
-	"send fqdn.encoded off;\n"
-	"send fqdn.server-update off;\n\n";
+static const char *fqdn_options_override_orig =
+    "\n"
+    "send fqdn.fqdn \"foobar.com\"\n" /* NM must ignore this ... */
+    "send fqdn.encoded off;\n"        /* ... and honor these */
+    "send fqdn.server-update off;\n";
+
+static const char *fqdn_options_override_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n"
+    "send fqdn.fqdn \"example2.com\"; # added by NetworkManager\n"
+    "send fqdn.encoded off;\n"
+    "send fqdn.server-update on;\n"
+    "send fqdn.no-client-update off;\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n"
+    "# FQDN options from /path/to/dhclient.conf\n"
+    "send fqdn.encoded off;\n"
+    "send fqdn.server-update off;\n\n";
 
 static void
-test_fqdn_options_override (void)
+test_fqdn_options_override(void)
 {
-	test_config (fqdn_options_override_orig,
-	             fqdn_options_override_expected,
-	             AF_INET, "example2.com", 0,
-	             NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE,
-	             TRUE, NULL,
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(fqdn_options_override_orig,
+                fqdn_options_override_expected,
+                AF_INET,
+                "example2.com",
+                0,
+                NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE,
+                TRUE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *override_hostname_orig = \
-	"send host-name \"foobar\";\n";
-
-static const char *override_hostname_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n"
-	"send host-name \"blahblah\"; # added by NetworkManager\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *override_hostname_orig = "send host-name \"foobar\";\n";
+
+static const char *override_hostname_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n"
+    "send host-name \"blahblah\"; # added by NetworkManager\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_override_hostname (void)
+test_override_hostname(void)
 {
-	test_config (override_hostname_orig, override_hostname_expected,
-	             AF_INET, "blahblah", 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(override_hostname_orig,
+                override_hostname_expected,
+                AF_INET,
+                "blahblah",
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *override_hostname6_orig = \
-	"send fqdn.fqdn \"foobar\";\n";
-
-static const char *override_hostname6_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n"
-	"send fqdn.fqdn \"blahblah.local\"; # added by NetworkManager\n"
-	"send fqdn.server-update on;\n"
-	"\n"
-	"also request dhcp6.name-servers;\n"
-	"also request dhcp6.domain-search;\n"
-	"also request dhcp6.client-id;\n"
-	"\n";
+static const char *override_hostname6_orig = "send fqdn.fqdn \"foobar\";\n";
+
+static const char *override_hostname6_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n"
+    "send fqdn.fqdn \"blahblah.local\"; # added by NetworkManager\n"
+    "send fqdn.server-update on;\n"
+    "\n"
+    "also request dhcp6.name-servers;\n"
+    "also request dhcp6.domain-search;\n"
+    "also request dhcp6.client-id;\n"
+    "\n";
 
 static void
-test_override_hostname6 (void)
+test_override_hostname6(void)
 {
-	test_config (override_hostname6_orig, override_hostname6_expected,
-	             AF_INET6, "blahblah.local", 0, TRUE,
-	             NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE,
-	             NULL,
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(override_hostname6_orig,
+                override_hostname6_expected,
+                AF_INET6,
+                "blahblah.local",
+                0,
+                TRUE,
+                NM_DHCP_HOSTNAME_FLAG_FQDN_SERV_UPDATE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *nonfqdn_hostname6_expected = \
-	"# Created by NetworkManager\n"
-	"\n"
-	"send fqdn.fqdn \"blahblah\"; # added by NetworkManager\n"
-	"send fqdn.no-client-update on;\n"
-	"\n"
-	"also request dhcp6.name-servers;\n"
-	"also request dhcp6.domain-search;\n"
-	"also request dhcp6.client-id;\n"
-	"\n";
+static const char *nonfqdn_hostname6_expected =
+    "# Created by NetworkManager\n"
+    "\n"
+    "send fqdn.fqdn \"blahblah\"; # added by NetworkManager\n"
+    "send fqdn.no-client-update on;\n"
+    "\n"
+    "also request dhcp6.name-servers;\n"
+    "also request dhcp6.domain-search;\n"
+    "also request dhcp6.client-id;\n"
+    "\n";
 
 static void
-test_nonfqdn_hostname6 (void)
+test_nonfqdn_hostname6(void)
 {
-	/* Non-FQDN hostname can now be used with dhclient */
-	test_config (NULL, nonfqdn_hostname6_expected,
-	             AF_INET6, "blahblah", 0, TRUE,
-	             NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE,
-	             NULL,
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    /* Non-FQDN hostname can now be used with dhclient */
+    test_config(NULL,
+                nonfqdn_hostname6_expected,
+                AF_INET6,
+                "blahblah",
+                0,
+                TRUE,
+                NM_DHCP_HOSTNAME_FLAG_FQDN_NO_UPDATE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *existing_alsoreq_orig = \
-	"also request something;\n"
-	"also request another-thing;\n"
-	;
-
-static const char *existing_alsoreq_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request something;\n"
-	"also request another-thing;\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *existing_alsoreq_orig = "also request something;\n"
+                                           "also request another-thing;\n";
+
+static const char *existing_alsoreq_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request something;\n"
+    "also request another-thing;\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_existing_alsoreq (void)
+test_existing_alsoreq(void)
 {
-	test_config (existing_alsoreq_orig, existing_alsoreq_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(existing_alsoreq_orig,
+                existing_alsoreq_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *existing_req_orig = \
-	"request something;\n"
-	"also request some-other-thing;\n"
-	"request another-thing;\n"
-	"also request yet-another-thing;\n"
-	;
-
-static const char *existing_req_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"request; # override dhclient defaults\n"
-	"also request another-thing;\n"
-	"also request yet-another-thing;\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *existing_req_orig = "request something;\n"
+                                       "also request some-other-thing;\n"
+                                       "request another-thing;\n"
+                                       "also request yet-another-thing;\n";
+
+static const char *existing_req_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "request; # override dhclient defaults\n"
+    "also request another-thing;\n"
+    "also request yet-another-thing;\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_existing_req (void)
+test_existing_req(void)
 {
-	test_config (existing_req_orig, existing_req_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(existing_req_orig,
+                existing_req_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *existing_multiline_alsoreq_orig = \
-	"also request something another-thing yet-another-thing\n"
-	"    foobar baz blah;\n"
-	;
-
-static const char *existing_multiline_alsoreq_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request something;\n"
-	"also request another-thing;\n"
-	"also request yet-another-thing;\n"
-	"also request foobar;\n"
-	"also request baz;\n"
-	"also request blah;\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *existing_multiline_alsoreq_orig =
+    "also request something another-thing yet-another-thing\n"
+    "    foobar baz blah;\n";
+
+static const char *existing_multiline_alsoreq_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request something;\n"
+    "also request another-thing;\n"
+    "also request yet-another-thing;\n"
+    "also request foobar;\n"
+    "also request baz;\n"
+    "also request blah;\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_existing_multiline_alsoreq (void)
+test_existing_multiline_alsoreq(void)
 {
-	test_config (existing_multiline_alsoreq_orig, existing_multiline_alsoreq_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(existing_multiline_alsoreq_orig,
+                existing_multiline_alsoreq_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
 static void
-test_one_duid (const char *escaped, const guint8 *unescaped, guint len)
+test_one_duid(const char *escaped, const guint8 *unescaped, guint len)
 {
-	gs_unref_bytes GBytes *t1 = NULL;
-	gs_unref_bytes GBytes *t2 = NULL;
-	gs_free char *w = NULL;
-
-	t1 = nm_dhcp_dhclient_unescape_duid (escaped);
-	g_assert (t1);
-	g_assert (nm_utils_gbytes_equal_mem (t1, unescaped, len));
-
-	t2 = g_bytes_new (unescaped, len);
-	w = nm_dhcp_dhclient_escape_duid (t2);
-	g_assert (w);
-	g_assert_cmpstr (escaped, ==, w);
+    gs_unref_bytes GBytes *t1 = NULL;
+    gs_unref_bytes GBytes *t2 = NULL;
+    gs_free char *         w  = NULL;
+
+    t1 = nm_dhcp_dhclient_unescape_duid(escaped);
+    g_assert(t1);
+    g_assert(nm_utils_gbytes_equal_mem(t1, unescaped, len));
+
+    t2 = g_bytes_new(unescaped, len);
+    w  = nm_dhcp_dhclient_escape_duid(t2);
+    g_assert(w);
+    g_assert_cmpstr(escaped, ==, w);
 }
 
 static void
-test_duids (void)
+test_duids(void)
 {
-	const guint8 test1_u[] = { 0x00, 0x01, 0x00, 0x01, 0x13, 0x6f, 0x13, 0x6e,
-	                           0x00, 0x22, 0xfa, 0x8c, 0xd6, 0xc2 };
-	const char *test1_s = "\\000\\001\\000\\001\\023o\\023n\\000\\\"\\372\\214\\326\\302";
+    const guint8 test1_u[] =
+        {0x00, 0x01, 0x00, 0x01, 0x13, 0x6f, 0x13, 0x6e, 0x00, 0x22, 0xfa, 0x8c, 0xd6, 0xc2};
+    const char *test1_s = "\\000\\001\\000\\001\\023o\\023n\\000\\\"\\372\\214\\326\\302";
 
-	const guint8 test2_u[] = { 0x00, 0x01, 0x00, 0x01, 0x17, 0x57, 0xee, 0x39,
-	                           0x00, 0x23, 0x15, 0x08, 0x7E, 0xac };
-	const char *test2_s = "\\000\\001\\000\\001\\027W\\3569\\000#\\025\\010~\\254";
+    const guint8 test2_u[] =
+        {0x00, 0x01, 0x00, 0x01, 0x17, 0x57, 0xee, 0x39, 0x00, 0x23, 0x15, 0x08, 0x7E, 0xac};
+    const char *test2_s = "\\000\\001\\000\\001\\027W\\3569\\000#\\025\\010~\\254";
 
-	const guint8 test3_u[] = { 0x00, 0x01, 0x00, 0x01, 0x17, 0x58, 0xe8, 0x58,
-	                           0x00, 0x23, 0x15, 0x08, 0x7e, 0xac };
-	const char *test3_s = "\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254";
+    const guint8 test3_u[] =
+        {0x00, 0x01, 0x00, 0x01, 0x17, 0x58, 0xe8, 0x58, 0x00, 0x23, 0x15, 0x08, 0x7e, 0xac};
+    const char *test3_s = "\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254";
 
-	const guint8 test4_u[] = { 0x00, 0x01, 0x00, 0x01, 0x15, 0xd5, 0x31, 0x97,
-	                           0x00, 0x16, 0xeb, 0x04, 0x45, 0x18 };
-	const char *test4_s = "\\000\\001\\000\\001\\025\\3251\\227\\000\\026\\353\\004E\\030";
+    const guint8 test4_u[] =
+        {0x00, 0x01, 0x00, 0x01, 0x15, 0xd5, 0x31, 0x97, 0x00, 0x16, 0xeb, 0x04, 0x45, 0x18};
+    const char *test4_s = "\\000\\001\\000\\001\\025\\3251\\227\\000\\026\\353\\004E\\030";
 
-	const char *bad_s = "\\000\\001\\000\\001\\425\\3251\\227\\000\\026\\353\\004E\\030";
+    const char *bad_s = "\\000\\001\\000\\001\\425\\3251\\227\\000\\026\\353\\004E\\030";
 
-	test_one_duid (test1_s, test1_u, sizeof (test1_u));
-	test_one_duid (test2_s, test2_u, sizeof (test2_u));
-	test_one_duid (test3_s, test3_u, sizeof (test3_u));
-	test_one_duid (test4_s, test4_u, sizeof (test4_u));
+    test_one_duid(test1_s, test1_u, sizeof(test1_u));
+    test_one_duid(test2_s, test2_u, sizeof(test2_u));
+    test_one_duid(test3_s, test3_u, sizeof(test3_u));
+    test_one_duid(test4_s, test4_u, sizeof(test4_u));
 
-	/* Invalid octal digit */
-	g_assert (nm_dhcp_dhclient_unescape_duid (bad_s) == NULL);
+    /* Invalid octal digit */
+    g_assert(nm_dhcp_dhclient_unescape_duid(bad_s) == NULL);
 }
 
 static void
-test_read_duid_from_leasefile (void)
+test_read_duid_from_leasefile(void)
 {
-	const guint8 expected[] = { 0x00, 0x01, 0x00, 0x01, 0x18, 0x79, 0xa6,
-	                            0x13, 0x60, 0x67, 0x20, 0xec, 0x4c, 0x70 };
-	gs_unref_bytes GBytes *duid = NULL;
-	GError *error = NULL;
+    const guint8 expected[] =
+        {0x00, 0x01, 0x00, 0x01, 0x18, 0x79, 0xa6, 0x13, 0x60, 0x67, 0x20, 0xec, 0x4c, 0x70};
+    gs_unref_bytes GBytes *duid  = NULL;
+    GError *               error = NULL;
 
-	duid = nm_dhcp_dhclient_read_duid (TEST_DIR"/test-dhclient-duid.leases", &error);
-	nmtst_assert_success (duid, error);
+    duid = nm_dhcp_dhclient_read_duid(TEST_DIR "/test-dhclient-duid.leases", &error);
+    nmtst_assert_success(duid, error);
 
-	g_assert (nm_utils_gbytes_equal_mem (duid, expected, G_N_ELEMENTS (expected)));
+    g_assert(nm_utils_gbytes_equal_mem(duid, expected, G_N_ELEMENTS(expected)));
 }
 
 static void
-test_read_commented_duid_from_leasefile (void)
+test_read_commented_duid_from_leasefile(void)
 {
-	GBytes *duid;
-	GError *error = NULL;
+    GBytes *duid;
+    GError *error = NULL;
 
-	duid = nm_dhcp_dhclient_read_duid (TEST_DIR"/test-dhclient-commented-duid.leases", &error);
-	g_assert_no_error (error);
-	g_assert (duid == NULL);
+    duid = nm_dhcp_dhclient_read_duid(TEST_DIR "/test-dhclient-commented-duid.leases", &error);
+    g_assert_no_error(error);
+    g_assert(duid == NULL);
 }
 
 /*****************************************************************************/
 
 static void
-_save_duid (const char *path,
-            const guint8 *duid_bin,
-            gsize duid_len)
+_save_duid(const char *path, const guint8 *duid_bin, gsize duid_len)
 {
-	gs_unref_bytes GBytes *duid = NULL;
-	GError *error = NULL;
-	gboolean success;
+    gs_unref_bytes GBytes *duid  = NULL;
+    GError *               error = NULL;
+    gboolean               success;
 
-	g_assert (path);
-	g_assert (duid_bin);
-	g_assert (duid_len > 0);
+    g_assert(path);
+    g_assert(duid_bin);
+    g_assert(duid_len > 0);
 
-	duid = g_bytes_new (duid_bin, duid_len);
-	success = nm_dhcp_dhclient_save_duid (path, duid, &error);
-	nmtst_assert_success (success, error);
+    duid    = g_bytes_new(duid_bin, duid_len);
+    success = nm_dhcp_dhclient_save_duid(path, duid, &error);
+    nmtst_assert_success(success, error);
 }
 
 static void
-test_write_duid (void)
+test_write_duid(void)
 {
-	const guint8 duid[] = { 000, 001, 000, 001, 027, 'X', 0350, 'X', 0, '#', 025, 010, '~', 0254 };
-	const char *expected_contents = "default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n";
-	GError *error = NULL;
-	gs_free char *contents = NULL;
-	gboolean success;
-	const char *path = "test-dhclient-write-duid.leases";
+    const guint8 duid[] = {000, 001, 000, 001, 027, 'X', 0350, 'X', 0, '#', 025, 010, '~', 0254};
+    const char * expected_contents =
+        "default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n";
+    GError *      error    = NULL;
+    gs_free char *contents = NULL;
+    gboolean      success;
+    const char *  path = "test-dhclient-write-duid.leases";
 
-	_save_duid (path, duid, G_N_ELEMENTS (duid));
+    _save_duid(path, duid, G_N_ELEMENTS(duid));
 
-	success = g_file_get_contents (path, &contents, NULL, &error);
-	nmtst_assert_success (success, error);
+    success = g_file_get_contents(path, &contents, NULL, &error);
+    nmtst_assert_success(success, error);
 
-	unlink (path);
+    unlink(path);
 
-	g_assert_cmpstr (expected_contents, ==, contents);
+    g_assert_cmpstr(expected_contents, ==, contents);
 }
 
 static void
-test_write_existing_duid (void)
+test_write_existing_duid(void)
 {
-	const guint8 duid[] = { 000, 001, 000, 001, 023, 'o', 023, 'n', 000, '"', 0372, 0214, 0326, 0302 };
-	const char *original_contents = "default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n";
-	const char *expected_contents = "default-duid \"\\000\\001\\000\\001\\023o\\023n\\000\\\"\\372\\214\\326\\302\";\n";
-	GError *error = NULL;
-	gs_free char *contents = NULL;
-	gboolean success;
-	const char *path = "test-dhclient-write-existing-duid.leases";
-
-	success = g_file_set_contents (path, original_contents, -1, &error);
-	nmtst_assert_success (success, error);
-
-	/* Save other DUID; should be overwritten */
-	_save_duid (path, duid, G_N_ELEMENTS (duid));
-
-	/* reread original contents */
-	success = g_file_get_contents (path, &contents, NULL, &error);
-	nmtst_assert_success (success, error);
-
-	unlink (path);
-	g_assert_cmpstr (expected_contents, ==, contents);
+    const guint8 duid[] =
+        {000, 001, 000, 001, 023, 'o', 023, 'n', 000, '"', 0372, 0214, 0326, 0302};
+    const char *original_contents =
+        "default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n";
+    const char *expected_contents =
+        "default-duid \"\\000\\001\\000\\001\\023o\\023n\\000\\\"\\372\\214\\326\\302\";\n";
+    GError *      error    = NULL;
+    gs_free char *contents = NULL;
+    gboolean      success;
+    const char *  path = "test-dhclient-write-existing-duid.leases";
+
+    success = g_file_set_contents(path, original_contents, -1, &error);
+    nmtst_assert_success(success, error);
+
+    /* Save other DUID; should be overwritten */
+    _save_duid(path, duid, G_N_ELEMENTS(duid));
+
+    /* reread original contents */
+    success = g_file_get_contents(path, &contents, NULL, &error);
+    nmtst_assert_success(success, error);
+
+    unlink(path);
+    g_assert_cmpstr(expected_contents, ==, contents);
 }
 
-static const guint8 DUID_BIN[] = { 000, 001, 000, 001, 023, 'o', 023, 'n', 000, '"', 0372, 0214, 0326, 0302 };
+static const guint8 DUID_BIN[] =
+    {000, 001, 000, 001, 023, 'o', 023, 'n', 000, '"', 0372, 0214, 0326, 0302};
 #define DUID "\\000\\001\\000\\001\\023o\\023n\\000\\\"\\372\\214\\326\\302"
 
 static void
-test_write_existing_commented_duid (void)
+test_write_existing_commented_duid(void)
 {
 #define ORIG_CONTENTS "#default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n"
-	const char *expected_contents =
-	    "default-duid \"" DUID "\";\n"
-	    ORIG_CONTENTS;
-	GError *error = NULL;
-	gs_free char *contents = NULL;
-	gboolean success;
-	const char *path = "test-dhclient-write-existing-commented-duid.leases";
-
-	success = g_file_set_contents (path, ORIG_CONTENTS, -1, &error);
-	nmtst_assert_success (success, error);
-
-	/* Save other DUID; should be saved on top */
-	_save_duid (path, DUID_BIN, G_N_ELEMENTS (DUID_BIN));
-
-	/* reread original contents */
-	success = g_file_get_contents (path, &contents, NULL, &error);
-	nmtst_assert_success (success, error);
-
-	unlink (path);
-	g_assert_cmpstr (expected_contents, ==, contents);
+    const char *  expected_contents = "default-duid \"" DUID "\";\n" ORIG_CONTENTS;
+    GError *      error             = NULL;
+    gs_free char *contents          = NULL;
+    gboolean      success;
+    const char *  path = "test-dhclient-write-existing-commented-duid.leases";
+
+    success = g_file_set_contents(path, ORIG_CONTENTS, -1, &error);
+    nmtst_assert_success(success, error);
+
+    /* Save other DUID; should be saved on top */
+    _save_duid(path, DUID_BIN, G_N_ELEMENTS(DUID_BIN));
+
+    /* reread original contents */
+    success = g_file_get_contents(path, &contents, NULL, &error);
+    nmtst_assert_success(success, error);
+
+    unlink(path);
+    g_assert_cmpstr(expected_contents, ==, contents);
 #undef ORIG_CONTENTS
 }
 
 static void
-test_write_existing_multiline_duid (void)
+test_write_existing_multiline_duid(void)
 {
-#define ORIG_CONTENTS "### Commented old DUID ###\n" \
-                      "#default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n"
-	const char *expected_contents = \
-	    "default-duid \"" DUID "\";\n"
-	    ORIG_CONTENTS;
-	GError *error = NULL;
-	gs_free char *contents = NULL;
-	gboolean success;
-	nmtst_auto_unlinkfile char *path = g_strdup ("test-dhclient-write-existing-multiline-duid.leases");
+#define ORIG_CONTENTS              \
+    "### Commented old DUID ###\n" \
+    "#default-duid \"\\000\\001\\000\\001\\027X\\350X\\000#\\025\\010~\\254\";\n"
+    const char *                expected_contents = "default-duid \"" DUID "\";\n" ORIG_CONTENTS;
+    GError *                    error             = NULL;
+    gs_free char *              contents          = NULL;
+    gboolean                    success;
+    nmtst_auto_unlinkfile char *path =
+        g_strdup("test-dhclient-write-existing-multiline-duid.leases");
 
-	success = g_file_set_contents (path, ORIG_CONTENTS, -1, &error);
-	nmtst_assert_success (success, error);
+    success = g_file_set_contents(path, ORIG_CONTENTS, -1, &error);
+    nmtst_assert_success(success, error);
 
-	_save_duid (path, DUID_BIN, G_N_ELEMENTS (DUID_BIN));
+    _save_duid(path, DUID_BIN, G_N_ELEMENTS(DUID_BIN));
 
-	success = g_file_get_contents (path, &contents, NULL, &error);
-	nmtst_assert_success (success, error);
+    success = g_file_get_contents(path, &contents, NULL, &error);
+    nmtst_assert_success(success, error);
 
-	g_assert_cmpstr (expected_contents, ==, contents);
+    g_assert_cmpstr(expected_contents, ==, contents);
 #undef ORIG_CONTENTS
 }
 
 /*****************************************************************************/
 
-static const char *interface1_orig = \
-	"interface \"eth0\" {\n"
-	"\talso request my-option;\n"
-	"\tinitial-delay 5;\n"
-	"}\n"
-	"interface \"eth1\" {\n"
-	"\talso request another-option;\n"
-	"\tinitial-delay 0;\n"
-	"}\n"
-	"\n"
-	"also request yet-another-option;\n";
-
-static const char *interface1_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n"
-	"initial-delay 5;\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"also request my-option;\n"
-	"also request yet-another-option;\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *interface1_orig = "interface \"eth0\" {\n"
+                                     "\talso request my-option;\n"
+                                     "\tinitial-delay 5;\n"
+                                     "}\n"
+                                     "interface \"eth1\" {\n"
+                                     "\talso request another-option;\n"
+                                     "\tinitial-delay 0;\n"
+                                     "}\n"
+                                     "\n"
+                                     "also request yet-another-option;\n";
+
+static const char *interface1_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n"
+    "initial-delay 5;\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "also request my-option;\n"
+    "also request yet-another-option;\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_interface1 (void)
+test_interface1(void)
 {
-	test_config (interface1_orig, interface1_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    test_config(interface1_orig,
+                interface1_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-static const char *interface2_orig = \
-	"interface eth0 {\n"
-	"\talso request my-option;\n"
-	"\tinitial-delay 5;\n"
-	" }\n"
-	"interface eth1 {\n"
-	"\tinitial-delay 0;\n"
-	"\trequest another-option;\n"
-	" } \n"
-	"\n"
-	"also request yet-another-option;\n";
-
-static const char *interface2_expected = \
-	"# Created by NetworkManager\n"
-	"# Merged from /path/to/dhclient.conf\n"
-	"\n"
-	"initial-delay 0;\n"
-	"\n"
-	"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-	"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-	"option wpad code 252 = string;\n"
-	"\n"
-	"request; # override dhclient defaults\n"
-	"also request another-option;\n"
-	"also request yet-another-option;\n"
-	"also request rfc3442-classless-static-routes;\n"
-	"also request ms-classless-static-routes;\n"
-	"also request static-routes;\n"
-	"also request wpad;\n"
-	"also request ntp-servers;\n"
-	"also request root-path;\n"
-	"\n";
+static const char *interface2_orig = "interface eth0 {\n"
+                                     "\talso request my-option;\n"
+                                     "\tinitial-delay 5;\n"
+                                     " }\n"
+                                     "interface eth1 {\n"
+                                     "\tinitial-delay 0;\n"
+                                     "\trequest another-option;\n"
+                                     " } \n"
+                                     "\n"
+                                     "also request yet-another-option;\n";
+
+static const char *interface2_expected =
+    "# Created by NetworkManager\n"
+    "# Merged from /path/to/dhclient.conf\n"
+    "\n"
+    "initial-delay 0;\n"
+    "\n"
+    "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+    "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+    "option wpad code 252 = string;\n"
+    "\n"
+    "request; # override dhclient defaults\n"
+    "also request another-option;\n"
+    "also request yet-another-option;\n"
+    "also request rfc3442-classless-static-routes;\n"
+    "also request ms-classless-static-routes;\n"
+    "also request static-routes;\n"
+    "also request wpad;\n"
+    "also request ntp-servers;\n"
+    "also request root-path;\n"
+    "\n";
 
 static void
-test_interface2 (void)
+test_interface2(void)
 {
-	test_config (interface2_orig, interface2_expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             NULL,
-	             "eth1",
-	             NULL,
-	             NULL);
+    test_config(interface2_orig,
+                interface2_expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                NULL,
+                "eth1",
+                NULL,
+                NULL);
 }
 
 static void
-test_structured (void)
+test_structured(void)
 {
-	gs_unref_bytes GBytes *new_client_id = NULL;
-	const guint8 bytes[] = "sad-and-useless";
-
-	static const char *const orig = \
-		"interface \"eth0\"   {  \n"
-		"    send host-name \"useless.example.com\";\n"
-		"    hardware ethernet de:ad:80:86:ba:be;\n"
-		"    send dhcp-client-identifier \"sad-and-useless\";\n"
-		"    script \"/bin/useless\";\n"
-		"    send dhcp-lease-time 8086;\n"
-		"    request subnet-mask, broadcast-address, time-offset, routers,\n"
-		"        domain-search, domain-name, host-name;\n"
-		"    require subnet-mask;\n"
-		"}  \n"
-		"\n"
-		"    interface \"eth1\"   {  \n"
-		"    send host-name \"sad.example.com\";\n"
-		"    hardware ethernet de:ca:f6:66:ca:fe;\n"
-		"    send dhcp-client-identifier \"useless-and-miserable\";\n"
-		"    script \"/bin/miserable\";\n"
-		"    send dhcp-lease-time 1337;\n"
-		"    request subnet-mask, broadcast-address, time-offset, routers,\n"
-		"        domain-search, domain-name, domain-name-servers, host-name;\n"
-		"    require subnet-mask, domain-name-servers;\n"
-		"    if not option domain-name = \"example.org\" {\n"
-		"        prepend domain-name-servers 127.0.0.1;\n"
-		"    } else {\n"
-		"        prepend domain-name-servers 127.0.0.2;\n"
-		"    }  \n"
-		"    }  \n"
-		"\n"
-		"pseudo \"secondary\" \"eth0\"   {  \n"
-		"    send dhcp-client-identifier \"sad-useless-and-secondary\";\n"
-		"    script \"/bin/secondary\";\n"
-		"    send host-name \"secondary.useless.example.com\";\n"
-		"    send dhcp-lease-time 666;\n"
-		"    request routers;\n"
-		"    require routers;\n"
-		"    }  \n"
-		"\n"
-		"    pseudo \"tertiary\" \"eth0\"   {  \n"
-		"   send dhcp-client-identifier \"sad-useless-and-tertiary\";\n"
-		"  script \"/bin/tertiary\";\n"
-		" send host-name \"tertiary.useless.example.com\";\n"
-		"}  \n"
-		"\n"
-		"  alias{  \n"
-		"    interface \"eth0\";\n"
-		"    fixed-address 192.0.2.1;\n"
-		"    option subnet-mask 255.255.255.0;\n"
-		"  }  \n"
-		"  lease   {  \n"
-		"    interface \"eth0\";\n"
-		"    fixed-address 192.0.2.2;\n"
-		"    option subnet-mask 255.255.255.0;\n"
-		"  }  \n"
-		"if not option domain-name = \"example.org\" {\n"
-		"  prepend domain-name-servers 127.0.0.1;\n"
-		"  if not option domain-name = \"useless.example.com\" {\n"
-		"    prepend domain-name-servers 127.0.0.2;\n"
-		"  }\n"
-		"}\n";
-
-	static const char *const expected = \
-		"# Created by NetworkManager\n"
-		"# Merged from /path/to/dhclient.conf\n"
-		"\n"
-		"send host-name \"useless.example.com\";\n"
-		"hardware ethernet de:ad:80:86:ba:be;\n"
-		"send dhcp-client-identifier \"sad-and-useless\";\n"
-		"send dhcp-lease-time 8086;\n"
-		"require subnet-mask;\n"
-		"if not option domain-name = \"example.org\" {\n"
-		"prepend domain-name-servers 127.0.0.1;\n"
-		"if not option domain-name = \"useless.example.com\" {\n"
-		"prepend domain-name-servers 127.0.0.2;\n"
-		"}\n"
-		"}\n"
-		"\n"
-		"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-		"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-		"option wpad code 252 = string;\n"
-		"\n"
-		"request; # override dhclient defaults\n"
-		"also request subnet-mask;\n"
-		"also request broadcast-address;\n"
-		"also request time-offset;\n"
-		"also request routers;\n"
-		"also request domain-search;\n"
-		"also request domain-name;\n"
-		"also request host-name;\n"
-		"also request rfc3442-classless-static-routes;\n"
-		"also request ms-classless-static-routes;\n"
-		"also request static-routes;\n"
-		"also request wpad;\n"
-		"also request ntp-servers;\n"
-		"also request root-path;\n"
-		"\n";
-
-	new_client_id = g_bytes_new (bytes, sizeof (bytes) - 1);
-	test_config (orig, expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             new_client_id,
-	             "eth0",
-	             NULL,
-	             NULL);
+    gs_unref_bytes GBytes *new_client_id = NULL;
+    const guint8           bytes[]       = "sad-and-useless";
+
+    static const char *const orig =
+        "interface \"eth0\"   {  \n"
+        "    send host-name \"useless.example.com\";\n"
+        "    hardware ethernet de:ad:80:86:ba:be;\n"
+        "    send dhcp-client-identifier \"sad-and-useless\";\n"
+        "    script \"/bin/useless\";\n"
+        "    send dhcp-lease-time 8086;\n"
+        "    request subnet-mask, broadcast-address, time-offset, routers,\n"
+        "        domain-search, domain-name, host-name;\n"
+        "    require subnet-mask;\n"
+        "}  \n"
+        "\n"
+        "    interface \"eth1\"   {  \n"
+        "    send host-name \"sad.example.com\";\n"
+        "    hardware ethernet de:ca:f6:66:ca:fe;\n"
+        "    send dhcp-client-identifier \"useless-and-miserable\";\n"
+        "    script \"/bin/miserable\";\n"
+        "    send dhcp-lease-time 1337;\n"
+        "    request subnet-mask, broadcast-address, time-offset, routers,\n"
+        "        domain-search, domain-name, domain-name-servers, host-name;\n"
+        "    require subnet-mask, domain-name-servers;\n"
+        "    if not option domain-name = \"example.org\" {\n"
+        "        prepend domain-name-servers 127.0.0.1;\n"
+        "    } else {\n"
+        "        prepend domain-name-servers 127.0.0.2;\n"
+        "    }  \n"
+        "    }  \n"
+        "\n"
+        "pseudo \"secondary\" \"eth0\"   {  \n"
+        "    send dhcp-client-identifier \"sad-useless-and-secondary\";\n"
+        "    script \"/bin/secondary\";\n"
+        "    send host-name \"secondary.useless.example.com\";\n"
+        "    send dhcp-lease-time 666;\n"
+        "    request routers;\n"
+        "    require routers;\n"
+        "    }  \n"
+        "\n"
+        "    pseudo \"tertiary\" \"eth0\"   {  \n"
+        "   send dhcp-client-identifier \"sad-useless-and-tertiary\";\n"
+        "  script \"/bin/tertiary\";\n"
+        " send host-name \"tertiary.useless.example.com\";\n"
+        "}  \n"
+        "\n"
+        "  alias{  \n"
+        "    interface \"eth0\";\n"
+        "    fixed-address 192.0.2.1;\n"
+        "    option subnet-mask 255.255.255.0;\n"
+        "  }  \n"
+        "  lease   {  \n"
+        "    interface \"eth0\";\n"
+        "    fixed-address 192.0.2.2;\n"
+        "    option subnet-mask 255.255.255.0;\n"
+        "  }  \n"
+        "if not option domain-name = \"example.org\" {\n"
+        "  prepend domain-name-servers 127.0.0.1;\n"
+        "  if not option domain-name = \"useless.example.com\" {\n"
+        "    prepend domain-name-servers 127.0.0.2;\n"
+        "  }\n"
+        "}\n";
+
+    static const char *const expected =
+        "# Created by NetworkManager\n"
+        "# Merged from /path/to/dhclient.conf\n"
+        "\n"
+        "send host-name \"useless.example.com\";\n"
+        "hardware ethernet de:ad:80:86:ba:be;\n"
+        "send dhcp-client-identifier \"sad-and-useless\";\n"
+        "send dhcp-lease-time 8086;\n"
+        "require subnet-mask;\n"
+        "if not option domain-name = \"example.org\" {\n"
+        "prepend domain-name-servers 127.0.0.1;\n"
+        "if not option domain-name = \"useless.example.com\" {\n"
+        "prepend domain-name-servers 127.0.0.2;\n"
+        "}\n"
+        "}\n"
+        "\n"
+        "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+        "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+        "option wpad code 252 = string;\n"
+        "\n"
+        "request; # override dhclient defaults\n"
+        "also request subnet-mask;\n"
+        "also request broadcast-address;\n"
+        "also request time-offset;\n"
+        "also request routers;\n"
+        "also request domain-search;\n"
+        "also request domain-name;\n"
+        "also request host-name;\n"
+        "also request rfc3442-classless-static-routes;\n"
+        "also request ms-classless-static-routes;\n"
+        "also request static-routes;\n"
+        "also request wpad;\n"
+        "also request ntp-servers;\n"
+        "also request root-path;\n"
+        "\n";
+
+    new_client_id = g_bytes_new(bytes, sizeof(bytes) - 1);
+    test_config(orig,
+                expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                new_client_id,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 static void
-test_config_req_intf (void)
+test_config_req_intf(void)
 {
-	static const char *const orig = \
-		"request subnet-mask, broadcast-address, routers,\n"
-		"\trfc3442-classless-static-routes,\n"
-		"\tinterface-mtu, host-name, domain-name, domain-search,\n"
-		"\tdomain-name-servers, nis-domain, nis-servers,\n"
-		"\tnds-context, nds-servers, nds-tree-name,\n"
-		"\tnetbios-name-servers, netbios-dd-server,\n"
-		"\tnetbios-node-type, netbios-scope, ntp-servers;\n"
-		"";
-	static const char *const expected = \
-		"# Created by NetworkManager\n"
-		"# Merged from /path/to/dhclient.conf\n"
-		"\n"
-		"\n"
-		"option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
-		"option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
-		"option wpad code 252 = string;\n"
-		"\n"
-		"request; # override dhclient defaults\n"
-		"also request subnet-mask;\n"
-		"also request broadcast-address;\n"
-		"also request routers;\n"
-		"also request rfc3442-classless-static-routes;\n"
-		"also request interface-mtu;\n"
-		"also request host-name;\n"
-		"also request domain-name;\n"
-		"also request domain-search;\n"
-		"also request domain-name-servers;\n"
-		"also request nis-domain;\n"
-		"also request nis-servers;\n"
-		"also request nds-context;\n"
-		"also request nds-servers;\n"
-		"also request nds-tree-name;\n"
-		"also request netbios-name-servers;\n"
-		"also request netbios-dd-server;\n"
-		"also request netbios-node-type;\n"
-		"also request netbios-scope;\n"
-		"also request ntp-servers;\n"
-		"also request ms-classless-static-routes;\n"
-		"also request static-routes;\n"
-		"also request wpad;\n"
-		"also request root-path;\n"
-		"\n";
-
-	test_config (orig, expected,
-	             AF_INET, NULL, 0, FALSE,
-	             NM_DHCP_HOSTNAME_FLAG_NONE,
-	             NULL,
-	             NULL,
-	             "eth0",
-	             NULL,
-	             NULL);
+    static const char *const orig = "request subnet-mask, broadcast-address, routers,\n"
+                                    "\trfc3442-classless-static-routes,\n"
+                                    "\tinterface-mtu, host-name, domain-name, domain-search,\n"
+                                    "\tdomain-name-servers, nis-domain, nis-servers,\n"
+                                    "\tnds-context, nds-servers, nds-tree-name,\n"
+                                    "\tnetbios-name-servers, netbios-dd-server,\n"
+                                    "\tnetbios-node-type, netbios-scope, ntp-servers;\n"
+                                    "";
+    static const char *const expected =
+        "# Created by NetworkManager\n"
+        "# Merged from /path/to/dhclient.conf\n"
+        "\n"
+        "\n"
+        "option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;\n"
+        "option ms-classless-static-routes code 249 = array of unsigned integer 8;\n"
+        "option wpad code 252 = string;\n"
+        "\n"
+        "request; # override dhclient defaults\n"
+        "also request subnet-mask;\n"
+        "also request broadcast-address;\n"
+        "also request routers;\n"
+        "also request rfc3442-classless-static-routes;\n"
+        "also request interface-mtu;\n"
+        "also request host-name;\n"
+        "also request domain-name;\n"
+        "also request domain-search;\n"
+        "also request domain-name-servers;\n"
+        "also request nis-domain;\n"
+        "also request nis-servers;\n"
+        "also request nds-context;\n"
+        "also request nds-servers;\n"
+        "also request nds-tree-name;\n"
+        "also request netbios-name-servers;\n"
+        "also request netbios-dd-server;\n"
+        "also request netbios-node-type;\n"
+        "also request netbios-scope;\n"
+        "also request ntp-servers;\n"
+        "also request ms-classless-static-routes;\n"
+        "also request static-routes;\n"
+        "also request wpad;\n"
+        "also request root-path;\n"
+        "\n";
+
+    test_config(orig,
+                expected,
+                AF_INET,
+                NULL,
+                0,
+                FALSE,
+                NM_DHCP_HOSTNAME_FLAG_NONE,
+                NULL,
+                NULL,
+                "eth0",
+                NULL,
+                NULL);
 }
 
 /*****************************************************************************/
 
-NMTST_DEFINE ();
+NMTST_DEFINE();
 
 int
-main (int argc, char **argv)
+main(int argc, char **argv)
 {
-	nmtst_init_with_logging (&argc, &argv, NULL, "DEFAULT");
-
-	g_test_add_func ("/dhcp/dhclient/orig_missing", test_orig_missing);
-	g_test_add_func ("/dhcp/dhclient/orig_missing_add_mud_url", test_orig_missing_add_mud_url);
-	g_test_add_func ("/dhcp/dhclient/override_client_id", test_override_client_id);
-	g_test_add_func ("/dhcp/dhclient/quote_client_id/1", test_quote_client_id);
-	g_test_add_func ("/dhcp/dhclient/quote_client_id/2", test_quote_client_id_2);
-	g_test_add_func ("/dhcp/dhclient/hex_zero_client_id", test_hex_zero_client_id);
-	g_test_add_func ("/dhcp/dhclient/ascii_client_id", test_ascii_client_id);
-	g_test_add_func ("/dhcp/dhclient/hex_single_client_id", test_hex_single_client_id);
-	g_test_add_func ("/dhcp/dhclient/existing-hex-client-id", test_existing_hex_client_id);
-	g_test_add_func ("/dhcp/dhclient/existing-client-id", test_existing_escaped_client_id);
-	g_test_add_func ("/dhcp/dhclient/existing-ascii-client-id", test_existing_ascii_client_id);
-	g_test_add_func ("/dhcp/dhclient/fqdn", test_fqdn);
-	g_test_add_func ("/dhcp/dhclient/fqdn_options_override", test_fqdn_options_override);
-	g_test_add_func ("/dhcp/dhclient/override_hostname", test_override_hostname);
-	g_test_add_func ("/dhcp/dhclient/override_hostname6", test_override_hostname6);
-	g_test_add_func ("/dhcp/dhclient/nonfqdn_hostname6", test_nonfqdn_hostname6);
-	g_test_add_func ("/dhcp/dhclient/existing_req", test_existing_req);
-	g_test_add_func ("/dhcp/dhclient/existing_alsoreq", test_existing_alsoreq);
-	g_test_add_func ("/dhcp/dhclient/existing_multiline_alsoreq", test_existing_multiline_alsoreq);
-	g_test_add_func ("/dhcp/dhclient/duids", test_duids);
-	g_test_add_func ("/dhcp/dhclient/interface/1", test_interface1);
-	g_test_add_func ("/dhcp/dhclient/interface/2", test_interface2);
-	g_test_add_func ("/dhcp/dhclient/config/req_intf", test_config_req_intf);
-	g_test_add_func ("/dhcp/dhclient/structured", test_structured);
-
-	g_test_add_func ("/dhcp/dhclient/read_duid_from_leasefile", test_read_duid_from_leasefile);
-	g_test_add_func ("/dhcp/dhclient/read_commented_duid_from_leasefile", test_read_commented_duid_from_leasefile);
-
-	g_test_add_func ("/dhcp/dhclient/write_duid", test_write_duid);
-	g_test_add_func ("/dhcp/dhclient/write_existing_duid", test_write_existing_duid);
-	g_test_add_func ("/dhcp/dhclient/write_existing_commented_duid", test_write_existing_commented_duid);
-	g_test_add_func ("/dhcp/dhclient/write_existing_multiline_duid", test_write_existing_multiline_duid);
-
-	return g_test_run ();
+    nmtst_init_with_logging(&argc, &argv, NULL, "DEFAULT");
+
+    g_test_add_func("/dhcp/dhclient/orig_missing", test_orig_missing);
+    g_test_add_func("/dhcp/dhclient/orig_missing_add_mud_url", test_orig_missing_add_mud_url);
+    g_test_add_func("/dhcp/dhclient/override_client_id", test_override_client_id);
+    g_test_add_func("/dhcp/dhclient/quote_client_id/1", test_quote_client_id);
+    g_test_add_func("/dhcp/dhclient/quote_client_id/2", test_quote_client_id_2);
+    g_test_add_func("/dhcp/dhclient/hex_zero_client_id", test_hex_zero_client_id);
+    g_test_add_func("/dhcp/dhclient/ascii_client_id", test_ascii_client_id);
+    g_test_add_func("/dhcp/dhclient/hex_single_client_id", test_hex_single_client_id);
+    g_test_add_func("/dhcp/dhclient/existing-hex-client-id", test_existing_hex_client_id);
+    g_test_add_func("/dhcp/dhclient/existing-client-id", test_existing_escaped_client_id);
+    g_test_add_func("/dhcp/dhclient/existing-ascii-client-id", test_existing_ascii_client_id);
+    g_test_add_func("/dhcp/dhclient/fqdn", test_fqdn);
+    g_test_add_func("/dhcp/dhclient/fqdn_options_override", test_fqdn_options_override);
+    g_test_add_func("/dhcp/dhclient/override_hostname", test_override_hostname);
+    g_test_add_func("/dhcp/dhclient/override_hostname6", test_override_hostname6);
+    g_test_add_func("/dhcp/dhclient/nonfqdn_hostname6", test_nonfqdn_hostname6);
+    g_test_add_func("/dhcp/dhclient/existing_req", test_existing_req);
+    g_test_add_func("/dhcp/dhclient/existing_alsoreq", test_existing_alsoreq);
+    g_test_add_func("/dhcp/dhclient/existing_multiline_alsoreq", test_existing_multiline_alsoreq);
+    g_test_add_func("/dhcp/dhclient/duids", test_duids);
+    g_test_add_func("/dhcp/dhclient/interface/1", test_interface1);
+    g_test_add_func("/dhcp/dhclient/interface/2", test_interface2);
+    g_test_add_func("/dhcp/dhclient/config/req_intf", test_config_req_intf);
+    g_test_add_func("/dhcp/dhclient/structured", test_structured);
+
+    g_test_add_func("/dhcp/dhclient/read_duid_from_leasefile", test_read_duid_from_leasefile);
+    g_test_add_func("/dhcp/dhclient/read_commented_duid_from_leasefile",
+                    test_read_commented_duid_from_leasefile);
+
+    g_test_add_func("/dhcp/dhclient/write_duid", test_write_duid);
+    g_test_add_func("/dhcp/dhclient/write_existing_duid", test_write_existing_duid);
+    g_test_add_func("/dhcp/dhclient/write_existing_commented_duid",
+                    test_write_existing_commented_duid);
+    g_test_add_func("/dhcp/dhclient/write_existing_multiline_duid",
+                    test_write_existing_multiline_duid);
+
+    return g_test_run();
 }
-
diff --git a/src/dhcp/tests/test-dhcp-utils.c b/src/dhcp/tests/test-dhcp-utils.c
index e601534e..50245c79 100644
--- a/src/dhcp/tests/test-dhcp-utils.c
+++ b/src/dhcp/tests/test-dhcp-utils.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2008 - 2014 Red Hat, Inc.
  */
@@ -18,776 +18,764 @@
 #include "nm-test-utils-core.h"
 
 static NMIP4Config *
-_ip4_config_from_options (int ifindex,
-                          const char *iface,
-                          GHashTable *options,
-                          guint32 route_metric)
+_ip4_config_from_options(int ifindex, const char *iface, GHashTable *options, guint32 route_metric)
 {
-	nm_auto_unref_dedup_multi_index NMDedupMultiIndex *multi_idx = nm_dedup_multi_index_new ();
-	NMIP4Config *config;
-
-	config = nm_dhcp_utils_ip4_config_from_options (multi_idx, ifindex, iface, options, RT_TABLE_MAIN, route_metric);
-	g_assert (config);
-	return config;
+    nm_auto_unref_dedup_multi_index NMDedupMultiIndex *multi_idx = nm_dedup_multi_index_new();
+    NMIP4Config *                                      config;
+
+    config = nm_dhcp_utils_ip4_config_from_options(multi_idx,
+                                                   ifindex,
+                                                   iface,
+                                                   options,
+                                                   RT_TABLE_MAIN,
+                                                   route_metric);
+    g_assert(config);
+    return config;
 }
 
 typedef struct {
-	const char *name;
-	const char *value;
+    const char *name;
+    const char *value;
 } Option;
 
 static GHashTable *
-fill_table (const Option *test_options, GHashTable *table)
+fill_table(const Option *test_options, GHashTable *table)
 {
-	const Option *opt;
+    const Option *opt;
 
-	if (!table)
-		table = g_hash_table_new_full (nm_str_hash, g_str_equal, NULL, NULL);
-	for (opt = test_options; opt->name; opt++)
-		g_hash_table_insert (table, (gpointer) opt->name, (gpointer) opt->value);
-	return table;
+    if (!table)
+        table = g_hash_table_new_full(nm_str_hash, g_str_equal, NULL, NULL);
+    for (opt = test_options; opt->name; opt++)
+        g_hash_table_insert(table, (gpointer) opt->name, (gpointer) opt->value);
+    return table;
 }
 
 static const Option generic_options[] = {
-	{ "subnet_mask",            "255.255.255.0" },
-	{ "ip_address",             "192.168.1.106" },
-	{ "network_number",         "192.168.1.0" },
-	{ "expiry",                 "1232324877" },
-	{ "dhcp_lease_time",        "3600" },
-	{ "dhcp_server_identifier", "192.168.1.1" },
-	{ "routers",                "192.168.1.1" },
-	{ "domain_name_servers",    "216.254.95.2 216.231.41.2" },
-	{ "dhcp_message_type",      "5" },
-	{ "broadcast_address",      "192.168.1.255" },
-	{ "domain_search",          "foobar.com blah.foobar.com" },
-	{ "host_name",              "nmreallywhipsthe" },
-	{ "domain_name",            "lamasass.com" },
-	{ "interface_mtu",          "987" },
-	{ "static_routes",          "10.1.1.5 10.1.1.1 100.99.88.56 10.1.1.1" },
-	{ NULL, NULL }
-};
+    {"subnet_mask", "255.255.255.0"},
+    {"ip_address", "192.168.1.106"},
+    {"network_number", "192.168.1.0"},
+    {"expiry", "1232324877"},
+    {"dhcp_lease_time", "3600"},
+    {"dhcp_server_identifier", "192.168.1.1"},
+    {"routers", "192.168.1.1"},
+    {"domain_name_servers", "216.254.95.2 216.231.41.2"},
+    {"dhcp_message_type", "5"},
+    {"broadcast_address", "192.168.1.255"},
+    {"domain_search", "foobar.com blah.foobar.com"},
+    {"host_name", "nmreallywhipsthe"},
+    {"domain_name", "lamasass.com"},
+    {"interface_mtu", "987"},
+    {"static_routes", "10.1.1.5 10.1.1.1 100.99.88.56 10.1.1.1"},
+    {NULL, NULL}};
 
 static void
-test_generic_options (void)
+test_generic_options(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const NMPlatformIP4Address *address;
-	const NMPlatformIP4Route *route;
-	guint32 tmp;
-	const char *expected_addr = "192.168.1.106";
-	const char *expected_gw = "192.168.1.1";
-	const char *expected_dns1 = "216.254.95.2";
-	const char *expected_dns2 = "216.231.41.2";
-	const char *expected_search1 = "foobar.com";
-	const char *expected_search2 = "blah.foobar.com";
-	const char *expected_route1_dest = "10.1.1.5";
-	const char *expected_route1_gw = "10.1.1.1";
-	const char *expected_route2_dest = "100.99.88.56";
-	const char *expected_route2_gw = "10.1.1.1";
-
-	options = fill_table (generic_options, NULL);
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-
-	/* IP4 address */
-	g_assert_cmpint (nm_ip4_config_get_num_addresses (ip4_config), ==, 1);
-	address = _nmtst_ip4_config_get_address (ip4_config, 0);
-	g_assert (inet_pton (AF_INET, expected_addr, &tmp) > 0);
-	g_assert (address->address == tmp);
-	g_assert (address->peer_address == tmp);
-	g_assert_cmpint (address->plen, ==, 24);
-
-	/* Gateway */
-	g_assert (inet_pton (AF_INET, expected_gw, &tmp) > 0);
-	g_assert (nmtst_ip4_config_get_gateway (ip4_config) == tmp);
-
-	g_assert_cmpint (nm_ip4_config_get_num_wins (ip4_config), ==, 0);
-
-	g_assert_cmpint (nm_ip4_config_get_mtu (ip4_config), ==, 987);
-
-	/* Domain searches */
-	g_assert_cmpint (nm_ip4_config_get_num_searches (ip4_config), ==, 2);
-	g_assert_cmpstr (nm_ip4_config_get_search (ip4_config, 0), ==, expected_search1);
-	g_assert_cmpstr (nm_ip4_config_get_search (ip4_config, 1), ==, expected_search2);
-
-	/* DNS servers */
-	g_assert_cmpint (nm_ip4_config_get_num_nameservers (ip4_config), ==, 2);
-	g_assert (inet_pton (AF_INET, expected_dns1, &tmp) > 0);
-	g_assert (nm_ip4_config_get_nameserver (ip4_config, 0) == tmp);
-	g_assert (inet_pton (AF_INET, expected_dns2, &tmp) > 0);
-	g_assert (nm_ip4_config_get_nameserver (ip4_config, 1) == tmp);
-
-	/* Routes */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 3);
-
-	/* Route #1 */
-	route = _nmtst_ip4_config_get_route (ip4_config, 0);
-	g_assert (inet_pton (AF_INET, expected_route1_dest, &tmp) > 0);
-	g_assert (route->network == tmp);
-	g_assert (inet_pton (AF_INET, expected_route1_gw, &tmp) > 0);
-	g_assert (route->gateway == tmp);
-	g_assert_cmpint (route->plen, ==, 32);
-	g_assert_cmpint (route->metric, ==, 0);
-
-	/* Route #2 */
-	route = _nmtst_ip4_config_get_route (ip4_config, 1);
-	g_assert (route->network == nmtst_inet4_from_string (expected_route2_dest));
-	g_assert (route->gateway == nmtst_inet4_from_string (expected_route2_gw));
-	g_assert_cmpint (route->plen, ==, 32);
-	g_assert_cmpint (route->metric, ==, 0);
-
-	route = _nmtst_ip4_config_get_route (ip4_config, 2);
-	g_assert (route->network == nmtst_inet4_from_string ("0.0.0.0"));
-	g_assert (route->gateway == nmtst_inet4_from_string ("192.168.1.1"));
-	g_assert_cmpint (route->plen, ==, 0);
-	g_assert_cmpint (route->metric, ==, 0);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    const NMPlatformIP4Address * address;
+    const NMPlatformIP4Route *   route;
+    guint32                      tmp;
+    const char *                 expected_addr        = "192.168.1.106";
+    const char *                 expected_gw          = "192.168.1.1";
+    const char *                 expected_dns1        = "216.254.95.2";
+    const char *                 expected_dns2        = "216.231.41.2";
+    const char *                 expected_search1     = "foobar.com";
+    const char *                 expected_search2     = "blah.foobar.com";
+    const char *                 expected_route1_dest = "10.1.1.5";
+    const char *                 expected_route1_gw   = "10.1.1.1";
+    const char *                 expected_route2_dest = "100.99.88.56";
+    const char *                 expected_route2_gw   = "10.1.1.1";
+
+    options    = fill_table(generic_options, NULL);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+
+    /* IP4 address */
+    g_assert_cmpint(nm_ip4_config_get_num_addresses(ip4_config), ==, 1);
+    address = _nmtst_ip4_config_get_address(ip4_config, 0);
+    g_assert(inet_pton(AF_INET, expected_addr, &tmp) > 0);
+    g_assert(address->address == tmp);
+    g_assert(address->peer_address == tmp);
+    g_assert_cmpint(address->plen, ==, 24);
+
+    /* Gateway */
+    g_assert(inet_pton(AF_INET, expected_gw, &tmp) > 0);
+    g_assert(nmtst_ip4_config_get_gateway(ip4_config) == tmp);
+
+    g_assert_cmpint(nm_ip4_config_get_num_wins(ip4_config), ==, 0);
+
+    g_assert_cmpint(nm_ip4_config_get_mtu(ip4_config), ==, 987);
+
+    /* Domain searches */
+    g_assert_cmpint(nm_ip4_config_get_num_searches(ip4_config), ==, 2);
+    g_assert_cmpstr(nm_ip4_config_get_search(ip4_config, 0), ==, expected_search1);
+    g_assert_cmpstr(nm_ip4_config_get_search(ip4_config, 1), ==, expected_search2);
+
+    /* DNS servers */
+    g_assert_cmpint(nm_ip4_config_get_num_nameservers(ip4_config), ==, 2);
+    g_assert(inet_pton(AF_INET, expected_dns1, &tmp) > 0);
+    g_assert(nm_ip4_config_get_nameserver(ip4_config, 0) == tmp);
+    g_assert(inet_pton(AF_INET, expected_dns2, &tmp) > 0);
+    g_assert(nm_ip4_config_get_nameserver(ip4_config, 1) == tmp);
+
+    /* Routes */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 3);
+
+    /* Route #1 */
+    route = _nmtst_ip4_config_get_route(ip4_config, 0);
+    g_assert(inet_pton(AF_INET, expected_route1_dest, &tmp) > 0);
+    g_assert(route->network == tmp);
+    g_assert(inet_pton(AF_INET, expected_route1_gw, &tmp) > 0);
+    g_assert(route->gateway == tmp);
+    g_assert_cmpint(route->plen, ==, 32);
+    g_assert_cmpint(route->metric, ==, 0);
+
+    /* Route #2 */
+    route = _nmtst_ip4_config_get_route(ip4_config, 1);
+    g_assert(route->network == nmtst_inet4_from_string(expected_route2_dest));
+    g_assert(route->gateway == nmtst_inet4_from_string(expected_route2_gw));
+    g_assert_cmpint(route->plen, ==, 32);
+    g_assert_cmpint(route->metric, ==, 0);
+
+    route = _nmtst_ip4_config_get_route(ip4_config, 2);
+    g_assert(route->network == nmtst_inet4_from_string("0.0.0.0"));
+    g_assert(route->gateway == nmtst_inet4_from_string("192.168.1.1"));
+    g_assert_cmpint(route->plen, ==, 0);
+    g_assert_cmpint(route->metric, ==, 0);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_wins_options (void)
+test_wins_options(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const NMPlatformIP4Address *address;
-	guint32 tmp;
-	const char *expected_wins1 = "63.12.199.5";
-	const char *expected_wins2 = "150.4.88.120";
-	static const Option data[] = {
-		{ "netbios_name_servers", "63.12.199.5 150.4.88.120" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-
-	/* IP4 address */
-	g_assert_cmpint (nm_ip4_config_get_num_addresses (ip4_config), ==, 1);
-	address = _nmtst_ip4_config_get_address (ip4_config, 0);
-	g_assert (address);
-	g_assert_cmpint (nm_ip4_config_get_num_wins (ip4_config), ==, 2);
-	g_assert (inet_pton (AF_INET, expected_wins1, &tmp) > 0);
-	g_assert (nm_ip4_config_get_wins (ip4_config, 0) == tmp);
-	g_assert (inet_pton (AF_INET, expected_wins2, &tmp) > 0);
-	g_assert (nm_ip4_config_get_wins (ip4_config, 1) == tmp);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    const NMPlatformIP4Address * address;
+    guint32                      tmp;
+    const char *                 expected_wins1 = "63.12.199.5";
+    const char *                 expected_wins2 = "150.4.88.120";
+    static const Option          data[] = {{"netbios_name_servers", "63.12.199.5 150.4.88.120"},
+                                  {NULL, NULL}};
+
+    options    = fill_table(generic_options, NULL);
+    options    = fill_table(data, options);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+
+    /* IP4 address */
+    g_assert_cmpint(nm_ip4_config_get_num_addresses(ip4_config), ==, 1);
+    address = _nmtst_ip4_config_get_address(ip4_config, 0);
+    g_assert(address);
+    g_assert_cmpint(nm_ip4_config_get_num_wins(ip4_config), ==, 2);
+    g_assert(inet_pton(AF_INET, expected_wins1, &tmp) > 0);
+    g_assert(nm_ip4_config_get_wins(ip4_config, 0) == tmp);
+    g_assert(inet_pton(AF_INET, expected_wins2, &tmp) > 0);
+    g_assert(nm_ip4_config_get_wins(ip4_config, 1) == tmp);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_vendor_option_metered (void)
+test_vendor_option_metered(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	static const Option data[] = {
-		{ "vendor_encapsulated_options", "ANDROID_METERED" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-	g_assert (nm_ip4_config_get_metered (ip4_config) == FALSE);
-	g_hash_table_destroy (options);
-	g_clear_object (&ip4_config);
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-	g_assert (nm_ip4_config_get_metered (ip4_config) == TRUE);
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    static const Option data[] = {{"vendor_encapsulated_options", "ANDROID_METERED"}, {NULL, NULL}};
+
+    options    = fill_table(generic_options, NULL);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+    g_assert(nm_ip4_config_get_metered(ip4_config) == FALSE);
+    g_hash_table_destroy(options);
+    g_clear_object(&ip4_config);
+
+    options    = fill_table(generic_options, NULL);
+    options    = fill_table(data, options);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+    g_assert(nm_ip4_config_get_metered(ip4_config) == TRUE);
+    g_hash_table_destroy(options);
 }
 
 static void
-test_parse_search_list (void)
+test_parse_search_list(void)
 {
-	guint8 *data;
-	char **domains;
-
-	data = (guint8 []) {
-		0x05, 'l', 'o', 'c', 'a', 'l',
-		0x00
-	};
-	domains = nm_dhcp_parse_search_list (data, 7);
-	g_assert (domains);
-	g_assert_cmpint (g_strv_length (domains), ==, 1);
-	g_assert_cmpstr (domains[0], ==, "local");
-	g_strfreev (domains);
-
-	data = (guint8 []) {
-		0x04, 't', 'e', 's', 't',
-		0x07, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
-		0x03, 'c', 'o', 'm',
-		0x00,
-		0xc0, 0x05,
-		0x03, 'a', 'b', 'c',
-		0xc0, 0x0d,
-		0x06, 'f', 'o', 'o', 'b', 'a', 'r',
-		0x00
-	};
-	domains = nm_dhcp_parse_search_list (data, 34);
-	g_assert (domains);
-	g_assert_cmpint (g_strv_length (domains), ==, 4);
-	g_assert_cmpstr (domains[0], ==, "test.example.com");
-	g_assert_cmpstr (domains[1], ==, "example.com");
-	g_assert_cmpstr (domains[2], ==, "abc.com");
-	g_assert_cmpstr (domains[3], ==, "foobar");
-	g_strfreev (domains);
-
-	data = (guint8 []) {
-		0x40, 'b', 'a', 'd',
-	};
-	domains = nm_dhcp_parse_search_list (data, 4);
-	g_assert (!domains);
-
-	data = (guint8 []) {
-		0x04, 'o', 'k', 'a', 'y',
-		0x00,
-		0x40, 'b', 'a', 'd',
-	};
-	domains = nm_dhcp_parse_search_list (data, 10);
-	g_assert (domains);
-	g_assert_cmpint (g_strv_length (domains), ==, 1);
-	g_assert_cmpstr (domains[0], ==, "okay");
-	g_strfreev (domains);
+    guint8 *data;
+    char ** domains;
+
+    data    = (guint8[]){0x05, 'l', 'o', 'c', 'a', 'l', 0x00};
+    domains = nm_dhcp_parse_search_list(data, 7);
+    g_assert(domains);
+    g_assert_cmpint(g_strv_length(domains), ==, 1);
+    g_assert_cmpstr(domains[0], ==, "local");
+    g_strfreev(domains);
+
+    data    = (guint8[]){0x04, 't',  'e',  's', 't', 0x07, 'e',  'x',  'a',  'm', 'p', 'l',
+                      'e',  0x03, 'c',  'o', 'm', 0x00, 0xc0, 0x05, 0x03, 'a', 'b', 'c',
+                      0xc0, 0x0d, 0x06, 'f', 'o', 'o',  'b',  'a',  'r',  0x00};
+    domains = nm_dhcp_parse_search_list(data, 34);
+    g_assert(domains);
+    g_assert_cmpint(g_strv_length(domains), ==, 4);
+    g_assert_cmpstr(domains[0], ==, "test.example.com");
+    g_assert_cmpstr(domains[1], ==, "example.com");
+    g_assert_cmpstr(domains[2], ==, "abc.com");
+    g_assert_cmpstr(domains[3], ==, "foobar");
+    g_strfreev(domains);
+
+    data = (guint8[]){
+        0x40,
+        'b',
+        'a',
+        'd',
+    };
+    domains = nm_dhcp_parse_search_list(data, 4);
+    g_assert(!domains);
+
+    data = (guint8[]){
+        0x04,
+        'o',
+        'k',
+        'a',
+        'y',
+        0x00,
+        0x40,
+        'b',
+        'a',
+        'd',
+    };
+    domains = nm_dhcp_parse_search_list(data, 10);
+    g_assert(domains);
+    g_assert_cmpint(g_strv_length(domains), ==, 1);
+    g_assert_cmpstr(domains[0], ==, "okay");
+    g_strfreev(domains);
 }
 
 static void
-ip4_test_route (NMIP4Config *ip4_config,
-                guint route_num,
-                const char *expected_dest,
-                const char *expected_gw,
-                guint expected_prefix)
+ip4_test_route(NMIP4Config *ip4_config,
+               guint        route_num,
+               const char * expected_dest,
+               const char * expected_gw,
+               guint        expected_prefix)
 {
-	const NMPlatformIP4Route *route;
-	guint32 tmp;
-
-	g_assert (expected_prefix <= 32);
-
-	route = _nmtst_ip4_config_get_route (ip4_config, route_num);
-	g_assert (inet_pton (AF_INET, expected_dest, &tmp) > 0);
-	g_assert (route->network == tmp);
-	g_assert (inet_pton (AF_INET, expected_gw, &tmp) > 0);
-	g_assert (route->gateway == tmp);
-	g_assert_cmpint (route->plen, ==, expected_prefix);
-	g_assert_cmpint (route->metric, ==, 0);
+    const NMPlatformIP4Route *route;
+    guint32                   tmp;
+
+    g_assert(expected_prefix <= 32);
+
+    route = _nmtst_ip4_config_get_route(ip4_config, route_num);
+    g_assert(inet_pton(AF_INET, expected_dest, &tmp) > 0);
+    g_assert(route->network == tmp);
+    g_assert(inet_pton(AF_INET, expected_gw, &tmp) > 0);
+    g_assert(route->gateway == tmp);
+    g_assert_cmpint(route->plen, ==, expected_prefix);
+    g_assert_cmpint(route->metric, ==, 0);
 }
 
 static void
-ip4_test_gateway (NMIP4Config *ip4_config, const char *expected_gw)
+ip4_test_gateway(NMIP4Config *ip4_config, const char *expected_gw)
 {
-	guint32 tmp;
+    guint32 tmp;
 
-	g_assert_cmpint (nm_ip4_config_get_num_addresses (ip4_config), ==, 1);
-	g_assert (inet_pton (AF_INET, expected_gw, &tmp) > 0);
-	g_assert (nmtst_ip4_config_get_gateway (ip4_config) == tmp);
+    g_assert_cmpint(nm_ip4_config_get_num_addresses(ip4_config), ==, 1);
+    g_assert(inet_pton(AF_INET, expected_gw, &tmp) > 0);
+    g_assert(nmtst_ip4_config_get_gateway(ip4_config) == tmp);
 }
 
 static void
-test_classless_static_routes_1 (void)
+test_classless_static_routes_1(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "192.168.10.0";
-	const char *expected_route1_gw = "192.168.1.1";
-	const char *expected_route2_dest = "10.0.0.0";
-	const char *expected_route2_gw = "10.17.66.41";
-	static const Option data[] = {
-		/* dhclient custom format */
-		{ "rfc3442_classless_static_routes", "24 192 168 10 192 168 1 1 8 10 10 17 66 41" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-
-	/* IP4 routes */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 3);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
-	ip4_test_route (ip4_config, 1, expected_route2_dest, expected_route2_gw, 8);
-	ip4_test_route (ip4_config, 2, "0.0.0.0", "192.168.1.1", 0);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "192.168.10.0";
+    const char *                 expected_route1_gw   = "192.168.1.1";
+    const char *                 expected_route2_dest = "10.0.0.0";
+    const char *                 expected_route2_gw   = "10.17.66.41";
+    static const Option          data[]               = {
+        /* dhclient custom format */
+        {"rfc3442_classless_static_routes", "24 192 168 10 192 168 1 1 8 10 10 17 66 41"},
+        {NULL, NULL}};
+
+    options    = fill_table(generic_options, NULL);
+    options    = fill_table(data, options);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+
+    /* IP4 routes */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 3);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
+    ip4_test_route(ip4_config, 1, expected_route2_dest, expected_route2_gw, 8);
+    ip4_test_route(ip4_config, 2, "0.0.0.0", "192.168.1.1", 0);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_classless_static_routes_2 (void)
+test_classless_static_routes_2(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "192.168.10.0";
-	const char *expected_route1_gw = "192.168.1.1";
-	const char *expected_route2_dest = "10.0.0.0";
-	const char *expected_route2_gw = "10.17.66.41";
-	static const Option data[] = {
-		/* dhcpcd format */
-		{ "classless_static_routes", "192.168.10.0/24 192.168.1.1 10.0.0.0/8 10.17.66.41" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-
-	/* IP4 routes */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 3);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
-	ip4_test_route (ip4_config, 1, expected_route2_dest, expected_route2_gw, 8);
-	ip4_test_route (ip4_config, 2, "0.0.0.0", expected_route1_gw, 0);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "192.168.10.0";
+    const char *                 expected_route1_gw   = "192.168.1.1";
+    const char *                 expected_route2_dest = "10.0.0.0";
+    const char *                 expected_route2_gw   = "10.17.66.41";
+    static const Option          data[]               = {
+        /* dhcpcd format */
+        {"classless_static_routes", "192.168.10.0/24 192.168.1.1 10.0.0.0/8 10.17.66.41"},
+        {NULL, NULL}};
+
+    options    = fill_table(generic_options, NULL);
+    options    = fill_table(data, options);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+
+    /* IP4 routes */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 3);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
+    ip4_test_route(ip4_config, 1, expected_route2_dest, expected_route2_gw, 8);
+    ip4_test_route(ip4_config, 2, "0.0.0.0", expected_route1_gw, 0);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_fedora_dhclient_classless_static_routes (void)
+test_fedora_dhclient_classless_static_routes(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "129.210.177.128";
-	const char *expected_route1_gw = "192.168.0.113";
-	const char *expected_route2_dest = "2.0.0.0";
-	const char *expected_route2_gw = "10.34.255.6";
-	const char *expected_gateway = "192.168.0.113";
-	static const Option data[] = {
-		/* Fedora dhclient format */
-		{ "classless_static_routes", "0 192.168.0.113 25.129.210.177.132 192.168.0.113 7.2 10.34.255.6" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-
-	/* IP4 routes */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 3);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 25);
-	ip4_test_route (ip4_config, 1, expected_route2_dest, expected_route2_gw, 7);
-	ip4_test_route (ip4_config, 2, "0.0.0.0", expected_route1_gw, 0);
-
-	/* Gateway */
-	ip4_test_gateway (ip4_config, expected_gateway);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "129.210.177.128";
+    const char *                 expected_route1_gw   = "192.168.0.113";
+    const char *                 expected_route2_dest = "2.0.0.0";
+    const char *                 expected_route2_gw   = "10.34.255.6";
+    const char *                 expected_gateway     = "192.168.0.113";
+    static const Option          data[]               = {
+        /* Fedora dhclient format */
+        {"classless_static_routes",
+         "0 192.168.0.113 25.129.210.177.132 192.168.0.113 7.2 10.34.255.6"},
+        {NULL, NULL}};
+
+    options    = fill_table(generic_options, NULL);
+    options    = fill_table(data, options);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+
+    /* IP4 routes */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 3);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 25);
+    ip4_test_route(ip4_config, 1, expected_route2_dest, expected_route2_gw, 7);
+    ip4_test_route(ip4_config, 2, "0.0.0.0", expected_route1_gw, 0);
+
+    /* Gateway */
+    ip4_test_gateway(ip4_config, expected_gateway);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_dhclient_invalid_classless_routes_1 (void)
+test_dhclient_invalid_classless_routes_1(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "192.168.10.0";
-	const char *expected_route1_gw = "192.168.1.1";
-	static const Option data[] = {
-		/* dhclient format */
-		{ "rfc3442_classless_static_routes", "24 192 168 10 192 168 1 1 45 10 17 66 41" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-
-	NMTST_EXPECT_NM_WARN ("*ignoring invalid classless static routes*");
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-	g_test_assert_expected_messages ();
-
-	/* IP4 routes */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 2);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
-	ip4_test_route (ip4_config, 1, "0.0.0.0", expected_route1_gw, 0);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "192.168.10.0";
+    const char *                 expected_route1_gw   = "192.168.1.1";
+    static const Option          data[]               = {
+        /* dhclient format */
+        {"rfc3442_classless_static_routes", "24 192 168 10 192 168 1 1 45 10 17 66 41"},
+        {NULL, NULL}};
+
+    options = fill_table(generic_options, NULL);
+    options = fill_table(data, options);
+
+    NMTST_EXPECT_NM_WARN("*ignoring invalid classless static routes*");
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+    g_test_assert_expected_messages();
+
+    /* IP4 routes */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 2);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
+    ip4_test_route(ip4_config, 1, "0.0.0.0", expected_route1_gw, 0);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_dhcpcd_invalid_classless_routes_1 (void)
+test_dhcpcd_invalid_classless_routes_1(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "10.1.1.5";
-	const char *expected_route1_gw = "10.1.1.1";
-	const char *expected_route2_dest = "100.99.88.56";
-	const char *expected_route2_gw = "10.1.1.1";
-	static const Option data[] = {
-		/* dhcpcd format */
-		{ "classless_static_routes", "192.168.10.0/24 192.168.1.1 10.0.adfadf/44 10.17.66.41" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-
-	NMTST_EXPECT_NM_WARN ("*ignoring invalid classless static routes*");
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-	g_test_assert_expected_messages ();
-
-	/* Test falling back to old-style static routes if the classless static
-	 * routes are invalid.
-	 */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 3);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 32);
-	ip4_test_route (ip4_config, 1, expected_route2_dest, expected_route2_gw, 32);
-	ip4_test_route (ip4_config, 2, "0.0.0.0", "192.168.1.1", 0);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "10.1.1.5";
+    const char *                 expected_route1_gw   = "10.1.1.1";
+    const char *                 expected_route2_dest = "100.99.88.56";
+    const char *                 expected_route2_gw   = "10.1.1.1";
+    static const Option          data[]               = {
+        /* dhcpcd format */
+        {"classless_static_routes", "192.168.10.0/24 192.168.1.1 10.0.adfadf/44 10.17.66.41"},
+        {NULL, NULL}};
+
+    options = fill_table(generic_options, NULL);
+    options = fill_table(data, options);
+
+    NMTST_EXPECT_NM_WARN("*ignoring invalid classless static routes*");
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+    g_test_assert_expected_messages();
+
+    /* Test falling back to old-style static routes if the classless static
+     * routes are invalid.
+     */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 3);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 32);
+    ip4_test_route(ip4_config, 1, expected_route2_dest, expected_route2_gw, 32);
+    ip4_test_route(ip4_config, 2, "0.0.0.0", "192.168.1.1", 0);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_dhclient_invalid_classless_routes_2 (void)
+test_dhclient_invalid_classless_routes_2(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "10.1.1.5";
-	const char *expected_route1_gw = "10.1.1.1";
-	const char *expected_route2_dest = "100.99.88.56";
-	const char *expected_route2_gw = "10.1.1.1";
-	static const Option data[] = {
-		{ "rfc3442_classless_static_routes", "45 10 17 66 41 24 192 168 10 192 168 1 1" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-
-	NMTST_EXPECT_NM_WARN ("*ignoring invalid classless static routes*");
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-	g_test_assert_expected_messages ();
-
-	/* Test falling back to old-style static routes if the classless static
-	 * routes are invalid.
-	 */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 3);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 32);
-	ip4_test_route (ip4_config, 1, expected_route2_dest, expected_route2_gw, 32);
-	ip4_test_route (ip4_config, 2, "0.0.0.0", "192.168.1.1", 0);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "10.1.1.5";
+    const char *                 expected_route1_gw   = "10.1.1.1";
+    const char *                 expected_route2_dest = "100.99.88.56";
+    const char *                 expected_route2_gw   = "10.1.1.1";
+    static const Option          data[]               = {
+        {"rfc3442_classless_static_routes", "45 10 17 66 41 24 192 168 10 192 168 1 1"},
+        {NULL, NULL}};
+
+    options = fill_table(generic_options, NULL);
+    options = fill_table(data, options);
+
+    NMTST_EXPECT_NM_WARN("*ignoring invalid classless static routes*");
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+    g_test_assert_expected_messages();
+
+    /* Test falling back to old-style static routes if the classless static
+     * routes are invalid.
+     */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 3);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 32);
+    ip4_test_route(ip4_config, 1, expected_route2_dest, expected_route2_gw, 32);
+    ip4_test_route(ip4_config, 2, "0.0.0.0", "192.168.1.1", 0);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_dhcpcd_invalid_classless_routes_2 (void)
+test_dhcpcd_invalid_classless_routes_2(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "10.1.1.5";
-	const char *expected_route1_gw = "10.1.1.1";
-	const char *expected_route2_dest = "100.99.88.56";
-	const char *expected_route2_gw = "10.1.1.1";
-	static const Option data[] = {
-		{ "classless_static_routes", "10.0.adfadf/44 10.17.66.41 192.168.10.0/24 192.168.1.1" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-
-	NMTST_EXPECT_NM_WARN ("*ignoring invalid classless static routes*");
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-	g_test_assert_expected_messages ();
-
-	/* Test falling back to old-style static routes if the classless static
-	 * routes are invalid.
-	 */
-
-	/* Routes */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 3);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 32);
-	ip4_test_route (ip4_config, 1, expected_route2_dest, expected_route2_gw, 32);
-	ip4_test_route (ip4_config, 2, "0.0.0.0", "192.168.1.1", 0);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "10.1.1.5";
+    const char *                 expected_route1_gw   = "10.1.1.1";
+    const char *                 expected_route2_dest = "100.99.88.56";
+    const char *                 expected_route2_gw   = "10.1.1.1";
+    static const Option          data[]               = {
+        {"classless_static_routes", "10.0.adfadf/44 10.17.66.41 192.168.10.0/24 192.168.1.1"},
+        {NULL, NULL}};
+
+    options = fill_table(generic_options, NULL);
+    options = fill_table(data, options);
+
+    NMTST_EXPECT_NM_WARN("*ignoring invalid classless static routes*");
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+    g_test_assert_expected_messages();
+
+    /* Test falling back to old-style static routes if the classless static
+     * routes are invalid.
+     */
+
+    /* Routes */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 3);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 32);
+    ip4_test_route(ip4_config, 1, expected_route2_dest, expected_route2_gw, 32);
+    ip4_test_route(ip4_config, 2, "0.0.0.0", "192.168.1.1", 0);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_dhclient_invalid_classless_routes_3 (void)
+test_dhclient_invalid_classless_routes_3(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "192.168.10.0";
-	const char *expected_route1_gw = "192.168.1.1";
-	static const Option data[] = {
-		{ "rfc3442_classless_static_routes", "24 192 168 10 192 168 1 1 32 128 10 17 66 41" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-
-	NMTST_EXPECT_NM_WARN ("*ignoring invalid classless static routes*");
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-	g_test_assert_expected_messages ();
-
-	/* IP4 routes */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 2);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
-	ip4_test_route (ip4_config, 1, "0.0.0.0", expected_route1_gw, 0);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "192.168.10.0";
+    const char *                 expected_route1_gw   = "192.168.1.1";
+    static const Option          data[]               = {
+        {"rfc3442_classless_static_routes", "24 192 168 10 192 168 1 1 32 128 10 17 66 41"},
+        {NULL, NULL}};
+
+    options = fill_table(generic_options, NULL);
+    options = fill_table(data, options);
+
+    NMTST_EXPECT_NM_WARN("*ignoring invalid classless static routes*");
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+    g_test_assert_expected_messages();
+
+    /* IP4 routes */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 2);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
+    ip4_test_route(ip4_config, 1, "0.0.0.0", expected_route1_gw, 0);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_dhcpcd_invalid_classless_routes_3 (void)
+test_dhcpcd_invalid_classless_routes_3(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "192.168.10.0";
-	const char *expected_route1_gw = "192.168.1.1";
-	static Option data[] = {
-		{ "classless_static_routes", "192.168.10.0/24 192.168.1.1 128/32 10.17.66.41" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-
-	NMTST_EXPECT_NM_WARN ("*DHCP provided invalid classless static route*");
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-	g_test_assert_expected_messages ();
-
-	/* IP4 routes */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 2);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
-	ip4_test_route (ip4_config, 1, "0.0.0.0", expected_route1_gw, 0);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "192.168.10.0";
+    const char *                 expected_route1_gw   = "192.168.1.1";
+    static Option                data[]               = {
+        {"classless_static_routes", "192.168.10.0/24 192.168.1.1 128/32 10.17.66.41"},
+        {NULL, NULL}};
+
+    options = fill_table(generic_options, NULL);
+    options = fill_table(data, options);
+
+    NMTST_EXPECT_NM_WARN("*DHCP provided invalid classless static route*");
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+    g_test_assert_expected_messages();
+
+    /* IP4 routes */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 2);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
+    ip4_test_route(ip4_config, 1, "0.0.0.0", expected_route1_gw, 0);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_dhclient_gw_in_classless_routes (void)
+test_dhclient_gw_in_classless_routes(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "192.168.10.0";
-	const char *expected_route1_gw = "192.168.1.1";
-	const char *expected_gateway = "192.2.3.4";
-	static Option data[] = {
-		{ "rfc3442_classless_static_routes", "24 192 168 10 192 168 1 1 0 192 2 3 4" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-
-	/* IP4 routes */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 2);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
-	ip4_test_route (ip4_config, 1, "0.0.0.0", "192.2.3.4", 0);
-
-	/* Gateway */
-	ip4_test_gateway (ip4_config, expected_gateway);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "192.168.10.0";
+    const char *                 expected_route1_gw   = "192.168.1.1";
+    const char *                 expected_gateway     = "192.2.3.4";
+    static Option                data[]               = {
+        {"rfc3442_classless_static_routes", "24 192 168 10 192 168 1 1 0 192 2 3 4"},
+        {NULL, NULL}};
+
+    options    = fill_table(generic_options, NULL);
+    options    = fill_table(data, options);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+
+    /* IP4 routes */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 2);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
+    ip4_test_route(ip4_config, 1, "0.0.0.0", "192.2.3.4", 0);
+
+    /* Gateway */
+    ip4_test_gateway(ip4_config, expected_gateway);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_dhcpcd_gw_in_classless_routes (void)
+test_dhcpcd_gw_in_classless_routes(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_route1_dest = "192.168.10.0";
-	const char *expected_route1_gw = "192.168.1.1";
-	const char *expected_gateway = "192.2.3.4";
-	static Option data[] = {
-		{ "classless_static_routes", "192.168.10.0/24 192.168.1.1 0.0.0.0/0 192.2.3.4" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-
-	/* IP4 routes */
-	g_assert_cmpint (nm_ip4_config_get_num_routes (ip4_config), ==, 2);
-	ip4_test_route (ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
-	ip4_test_route (ip4_config, 1, "0.0.0.0", "192.2.3.4", 0);
-
-	/* Gateway */
-	ip4_test_gateway (ip4_config, expected_gateway);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config           = NULL;
+    const char *                 expected_route1_dest = "192.168.10.0";
+    const char *                 expected_route1_gw   = "192.168.1.1";
+    const char *                 expected_gateway     = "192.2.3.4";
+    static Option                data[]               = {
+        {"classless_static_routes", "192.168.10.0/24 192.168.1.1 0.0.0.0/0 192.2.3.4"},
+        {NULL, NULL}};
+
+    options    = fill_table(generic_options, NULL);
+    options    = fill_table(data, options);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+
+    /* IP4 routes */
+    g_assert_cmpint(nm_ip4_config_get_num_routes(ip4_config), ==, 2);
+    ip4_test_route(ip4_config, 0, expected_route1_dest, expected_route1_gw, 24);
+    ip4_test_route(ip4_config, 1, "0.0.0.0", "192.2.3.4", 0);
+
+    /* Gateway */
+    ip4_test_gateway(ip4_config, expected_gateway);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_escaped_domain_searches (void)
+test_escaped_domain_searches(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const char *expected_search0 = "host1";
-	const char *expected_search1 = "host2";
-	const char *expected_search2 = "host3";
-	static const Option data[] = {
-		{ "domain_search", "host1\\032host2\\032host3" },
-		{ NULL, NULL }
-	};
-
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-
-	/* domain searches */
-	g_assert_cmpint (nm_ip4_config_get_num_searches (ip4_config), ==, 3);
-	g_assert_cmpstr (nm_ip4_config_get_search (ip4_config, 0), ==, expected_search0);
-	g_assert_cmpstr (nm_ip4_config_get_search (ip4_config, 1), ==, expected_search1);
-	g_assert_cmpstr (nm_ip4_config_get_search (ip4_config, 2), ==, expected_search2);
-
-	g_hash_table_destroy (options);
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config       = NULL;
+    const char *                 expected_search0 = "host1";
+    const char *                 expected_search1 = "host2";
+    const char *                 expected_search2 = "host3";
+    static const Option data[] = {{"domain_search", "host1\\032host2\\032host3"}, {NULL, NULL}};
+
+    options    = fill_table(generic_options, NULL);
+    options    = fill_table(data, options);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+
+    /* domain searches */
+    g_assert_cmpint(nm_ip4_config_get_num_searches(ip4_config), ==, 3);
+    g_assert_cmpstr(nm_ip4_config_get_search(ip4_config, 0), ==, expected_search0);
+    g_assert_cmpstr(nm_ip4_config_get_search(ip4_config, 1), ==, expected_search1);
+    g_assert_cmpstr(nm_ip4_config_get_search(ip4_config, 2), ==, expected_search2);
+
+    g_hash_table_destroy(options);
 }
 
 static void
-test_invalid_escaped_domain_searches (void)
+test_invalid_escaped_domain_searches(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	static const Option data[] = {
-		{ "domain_search", "host1\\aahost2\\032host3" },
-		{ NULL, NULL }
-	};
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    static const Option data[] = {{"domain_search", "host1\\aahost2\\032host3"}, {NULL, NULL}};
 
-	options = fill_table (generic_options, NULL);
-	options = fill_table (data, options);
+    options = fill_table(generic_options, NULL);
+    options = fill_table(data, options);
 
-	NMTST_EXPECT_NM_WARN ("*invalid domain search*");
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
-	g_test_assert_expected_messages ();
+    NMTST_EXPECT_NM_WARN("*invalid domain search*");
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
+    g_test_assert_expected_messages();
 
-	/* domain searches */
-	g_assert_cmpint (nm_ip4_config_get_num_searches (ip4_config), ==, 0);
+    /* domain searches */
+    g_assert_cmpint(nm_ip4_config_get_num_searches(ip4_config), ==, 0);
 
-	g_hash_table_destroy (options);
+    g_hash_table_destroy(options);
 }
 
 static void
-test_ip4_missing_prefix (const char *ip, guint32 expected_prefix)
+test_ip4_missing_prefix(const char *ip, guint32 expected_prefix)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const NMPlatformIP4Address *address;
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    const NMPlatformIP4Address * address;
 
-	options = fill_table (generic_options, NULL);
-	g_hash_table_insert (options, "ip_address", (gpointer) ip);
-	g_hash_table_remove (options, "subnet_mask");
+    options = fill_table(generic_options, NULL);
+    g_hash_table_insert(options, "ip_address", (gpointer) ip);
+    g_hash_table_remove(options, "subnet_mask");
 
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
 
-	g_assert_cmpint (nm_ip4_config_get_num_addresses (ip4_config), ==, 1);
-	address = _nmtst_ip4_config_get_address (ip4_config, 0);
-	g_assert (address);
-	g_assert_cmpint (address->plen, ==, expected_prefix);
+    g_assert_cmpint(nm_ip4_config_get_num_addresses(ip4_config), ==, 1);
+    address = _nmtst_ip4_config_get_address(ip4_config, 0);
+    g_assert(address);
+    g_assert_cmpint(address->plen, ==, expected_prefix);
 
-	g_hash_table_destroy (options);
+    g_hash_table_destroy(options);
 }
 
 static void
-test_ip4_missing_prefix_24 (void)
+test_ip4_missing_prefix_24(void)
 {
-	test_ip4_missing_prefix ("192.168.1.10", 24);
+    test_ip4_missing_prefix("192.168.1.10", 24);
 }
 
 static void
-test_ip4_missing_prefix_16 (void)
+test_ip4_missing_prefix_16(void)
 {
-	test_ip4_missing_prefix ("172.16.54.50", 16);
+    test_ip4_missing_prefix("172.16.54.50", 16);
 }
 
 static void
-test_ip4_missing_prefix_8 (void)
+test_ip4_missing_prefix_8(void)
 {
-	test_ip4_missing_prefix ("10.1.2.3", 8);
+    test_ip4_missing_prefix("10.1.2.3", 8);
 }
 
 static void
-test_ip4_prefix_classless (void)
+test_ip4_prefix_classless(void)
 {
-	GHashTable *options;
-	gs_unref_object NMIP4Config *ip4_config = NULL;
-	const NMPlatformIP4Address *address;
+    GHashTable *    options;
+    gs_unref_object NMIP4Config *ip4_config = NULL;
+    const NMPlatformIP4Address * address;
 
-	/* Ensure that the missing-subnet-mask handler doesn't mangle classless
-	 * subnet masks at all.  The handler should trigger only if the server
-	 * doesn't send the subnet mask.
-	 */
+    /* Ensure that the missing-subnet-mask handler doesn't mangle classless
+     * subnet masks at all.  The handler should trigger only if the server
+     * doesn't send the subnet mask.
+     */
 
-	options = fill_table (generic_options, NULL);
-	g_hash_table_insert (options, "ip_address", "172.16.54.22");
-	g_hash_table_insert (options, "subnet_mask", "255.255.252.0");
+    options = fill_table(generic_options, NULL);
+    g_hash_table_insert(options, "ip_address", "172.16.54.22");
+    g_hash_table_insert(options, "subnet_mask", "255.255.252.0");
 
-	ip4_config = _ip4_config_from_options (1, "eth0", options, 0);
+    ip4_config = _ip4_config_from_options(1, "eth0", options, 0);
 
-	g_assert_cmpint (nm_ip4_config_get_num_addresses (ip4_config), ==, 1);
-	address = _nmtst_ip4_config_get_address (ip4_config, 0);
-	g_assert (address);
-	g_assert_cmpint (address->plen, ==, 22);
+    g_assert_cmpint(nm_ip4_config_get_num_addresses(ip4_config), ==, 1);
+    address = _nmtst_ip4_config_get_address(ip4_config, 0);
+    g_assert(address);
+    g_assert_cmpint(address->plen, ==, 22);
 
-	g_hash_table_destroy (options);
+    g_hash_table_destroy(options);
 }
 
-#define COMPARE_ID(src, is_str, expected, expected_len) \
-G_STMT_START { \
-	gs_unref_bytes GBytes *b = NULL; \
-	const char *p; \
-	gsize l; \
- \
-	b = nm_dhcp_utils_client_id_string_to_bytes (src); \
-	g_assert (b); \
-	p = g_bytes_get_data (b, &l); \
-	if (is_str) { \
-		g_assert_cmpint (l, ==, expected_len + 1); \
-		g_assert_cmpint (((const char *) p)[0], ==, 0); \
-		g_assert (memcmp (p + 1, expected, expected_len) == 0); \
-	} else { \
-		g_assert_cmpint (l, ==, expected_len); \
-		g_assert (memcmp (p, expected, expected_len) == 0); \
-	} \
-} G_STMT_END
+#define COMPARE_ID(src, is_str, expected, expected_len)           \
+    G_STMT_START                                                  \
+    {                                                             \
+        gs_unref_bytes GBytes *b = NULL;                          \
+        const char *           p;                                 \
+        gsize                  l;                                 \
+                                                                  \
+        b = nm_dhcp_utils_client_id_string_to_bytes(src);         \
+        g_assert(b);                                              \
+        p = g_bytes_get_data(b, &l);                              \
+        if (is_str) {                                             \
+            g_assert_cmpint(l, ==, expected_len + 1);             \
+            g_assert_cmpint(((const char *) p)[0], ==, 0);        \
+            g_assert(memcmp(p + 1, expected, expected_len) == 0); \
+        } else {                                                  \
+            g_assert_cmpint(l, ==, expected_len);                 \
+            g_assert(memcmp(p, expected, expected_len) == 0);     \
+        }                                                         \
+    }                                                             \
+    G_STMT_END
 
 static void
-test_client_id_from_string (void)
+test_client_id_from_string(void)
 {
-	const char *nothex = "asdfasdfasdfasdfasdfasdfasdf";
-	const char *allhex = "00:11:22:33:4:55:66:77:88";
-	const guint8 allhex_bin[] = { 0x00, 0x11, 0x22, 0x33, 0x04, 0x55, 0x66, 0x77, 0x88 };
-	const char *somehex = "00:11:22:33:44:55:asdfasdfasdf:99:10";
-	const char *nocolons = "0011223344559910";
-	const char *endcolon = "00:11:22:33:44:55:";
-
-	COMPARE_ID (nothex, TRUE, nothex, strlen (nothex));
-	COMPARE_ID (allhex, FALSE, allhex_bin, sizeof (allhex_bin));
-	COMPARE_ID (somehex, TRUE, somehex, strlen (somehex));
-	COMPARE_ID (nocolons, TRUE, nocolons, strlen (nocolons));
-	COMPARE_ID (endcolon, TRUE, endcolon, strlen (endcolon));
+    const char * nothex       = "asdfasdfasdfasdfasdfasdfasdf";
+    const char * allhex       = "00:11:22:33:4:55:66:77:88";
+    const guint8 allhex_bin[] = {0x00, 0x11, 0x22, 0x33, 0x04, 0x55, 0x66, 0x77, 0x88};
+    const char * somehex      = "00:11:22:33:44:55:asdfasdfasdf:99:10";
+    const char * nocolons     = "0011223344559910";
+    const char * endcolon     = "00:11:22:33:44:55:";
+
+    COMPARE_ID(nothex, TRUE, nothex, strlen(nothex));
+    COMPARE_ID(allhex, FALSE, allhex_bin, sizeof(allhex_bin));
+    COMPARE_ID(somehex, TRUE, somehex, strlen(somehex));
+    COMPARE_ID(nocolons, TRUE, nocolons, strlen(nocolons));
+    COMPARE_ID(endcolon, TRUE, endcolon, strlen(endcolon));
 }
 
-NMTST_DEFINE ();
+NMTST_DEFINE();
 
-int main (int argc, char **argv)
+int
+main(int argc, char **argv)
 {
-	nmtst_init_assert_logging (&argc, &argv, "WARN", "DEFAULT");
-
-	g_test_add_func ("/dhcp/generic-options", test_generic_options);
-	g_test_add_func ("/dhcp/wins-options", test_wins_options);
-	g_test_add_func ("/dhcp/classless-static-routes-1", test_classless_static_routes_1);
-	g_test_add_func ("/dhcp/classless-static-routes-2", test_classless_static_routes_2);
-	g_test_add_func ("/dhcp/fedora-dhclient-classless-static-routes", test_fedora_dhclient_classless_static_routes);
-	g_test_add_func ("/dhcp/dhclient-invalid-classless-routes-1", test_dhclient_invalid_classless_routes_1);
-	g_test_add_func ("/dhcp/dhcpcd-invalid-classless-routes-1", test_dhcpcd_invalid_classless_routes_1);
-	g_test_add_func ("/dhcp/dhclient-invalid-classless-routes-2", test_dhclient_invalid_classless_routes_2);
-	g_test_add_func ("/dhcp/dhcpcd-invalid-classless-routes-2", test_dhcpcd_invalid_classless_routes_2);
-	g_test_add_func ("/dhcp/dhclient-invalid-classless-routes-3", test_dhclient_invalid_classless_routes_3);
-	g_test_add_func ("/dhcp/dhcpcd-invalid-classless-routes-3", test_dhcpcd_invalid_classless_routes_3);
-	g_test_add_func ("/dhcp/dhclient-gw-in-classless-routes", test_dhclient_gw_in_classless_routes);
-	g_test_add_func ("/dhcp/dhcpcd-gw-in-classless-routes", test_dhcpcd_gw_in_classless_routes);
-	g_test_add_func ("/dhcp/escaped-domain-searches", test_escaped_domain_searches);
-	g_test_add_func ("/dhcp/invalid-escaped-domain-searches", test_invalid_escaped_domain_searches);
-	g_test_add_func ("/dhcp/ip4-missing-prefix-24", test_ip4_missing_prefix_24);
-	g_test_add_func ("/dhcp/ip4-missing-prefix-16", test_ip4_missing_prefix_16);
-	g_test_add_func ("/dhcp/ip4-missing-prefix-8", test_ip4_missing_prefix_8);
-	g_test_add_func ("/dhcp/ip4-prefix-classless", test_ip4_prefix_classless);
-	g_test_add_func ("/dhcp/client-id-from-string", test_client_id_from_string);
-	g_test_add_func ("/dhcp/vendor-option-metered", test_vendor_option_metered);
-	g_test_add_func ("/dhcp/parse-search-list", test_parse_search_list);
-
-	return g_test_run ();
+    nmtst_init_assert_logging(&argc, &argv, "WARN", "DEFAULT");
+
+    g_test_add_func("/dhcp/generic-options", test_generic_options);
+    g_test_add_func("/dhcp/wins-options", test_wins_options);
+    g_test_add_func("/dhcp/classless-static-routes-1", test_classless_static_routes_1);
+    g_test_add_func("/dhcp/classless-static-routes-2", test_classless_static_routes_2);
+    g_test_add_func("/dhcp/fedora-dhclient-classless-static-routes",
+                    test_fedora_dhclient_classless_static_routes);
+    g_test_add_func("/dhcp/dhclient-invalid-classless-routes-1",
+                    test_dhclient_invalid_classless_routes_1);
+    g_test_add_func("/dhcp/dhcpcd-invalid-classless-routes-1",
+                    test_dhcpcd_invalid_classless_routes_1);
+    g_test_add_func("/dhcp/dhclient-invalid-classless-routes-2",
+                    test_dhclient_invalid_classless_routes_2);
+    g_test_add_func("/dhcp/dhcpcd-invalid-classless-routes-2",
+                    test_dhcpcd_invalid_classless_routes_2);
+    g_test_add_func("/dhcp/dhclient-invalid-classless-routes-3",
+                    test_dhclient_invalid_classless_routes_3);
+    g_test_add_func("/dhcp/dhcpcd-invalid-classless-routes-3",
+                    test_dhcpcd_invalid_classless_routes_3);
+    g_test_add_func("/dhcp/dhclient-gw-in-classless-routes", test_dhclient_gw_in_classless_routes);
+    g_test_add_func("/dhcp/dhcpcd-gw-in-classless-routes", test_dhcpcd_gw_in_classless_routes);
+    g_test_add_func("/dhcp/escaped-domain-searches", test_escaped_domain_searches);
+    g_test_add_func("/dhcp/invalid-escaped-domain-searches", test_invalid_escaped_domain_searches);
+    g_test_add_func("/dhcp/ip4-missing-prefix-24", test_ip4_missing_prefix_24);
+    g_test_add_func("/dhcp/ip4-missing-prefix-16", test_ip4_missing_prefix_16);
+    g_test_add_func("/dhcp/ip4-missing-prefix-8", test_ip4_missing_prefix_8);
+    g_test_add_func("/dhcp/ip4-prefix-classless", test_ip4_prefix_classless);
+    g_test_add_func("/dhcp/client-id-from-string", test_client_id_from_string);
+    g_test_add_func("/dhcp/vendor-option-metered", test_vendor_option_metered);
+    g_test_add_func("/dhcp/parse-search-list", test_parse_search_list);
+
+    return g_test_run();
 }
-