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-rw-r--r--src/core/devices/nm-device.c71
-rw-r--r--src/core/devices/nm-device.h2
-rw-r--r--src/core/devices/ovs/nm-device-ovs-port.c8
-rw-r--r--src/core/devices/wwan/nm-modem-broadband.c2
4 files changed, 79 insertions, 4 deletions
diff --git a/src/core/devices/nm-device.c b/src/core/devices/nm-device.c
index 35360cee..a11486d5 100644
--- a/src/core/devices/nm-device.c
+++ b/src/core/devices/nm-device.c
@@ -76,6 +76,7 @@
 #include "nm-hostname-manager.h"
 
 #include "nm-device-generic.h"
+#include "nm-device-bridge.h"
 #include "nm-device-vlan.h"
 #include "nm-device-vrf.h"
 #include "nm-device-wireguard.h"
@@ -483,9 +484,12 @@ typedef struct _NMDevicePrivate {
 
     NMUtilsStableType current_stable_id_type : 3;
 
+    bool activation_state_preserve_external_ports : 1;
+
     bool nm_owned : 1; /* whether the device is a device owned and created by NM */
 
-    bool  assume_state_guess_assume : 1;
+    bool assume_state_guess_assume : 1;
+
     char *assume_state_connection_uuid;
 
     guint64 udi_id;
@@ -7666,8 +7670,19 @@ nm_device_master_release_slaves(NMDevice *self)
     c_list_for_each_safe (iter, safe, &priv->slaves) {
         SlaveInfo *info = c_list_entry(iter, SlaveInfo, lst_slave);
 
+        if (priv->activation_state_preserve_external_ports
+            && nm_device_sys_iface_state_is_external(info->slave)) {
+            _LOGT(LOGD_DEVICE,
+                  "master: preserve external port %s",
+                  nm_device_get_iface(info->slave));
+            continue;
+        }
         nm_device_master_release_one_slave(self, info->slave, TRUE, FALSE, reason);
     }
+
+    /* We only need this flag for a short time. It served its purpose. Clear
+     * it again. */
+    nm_device_activation_state_set_preserve_external_ports(self, FALSE);
 }
 
 /**
@@ -15386,6 +15401,16 @@ _set_state_full(NMDevice *self, NMDeviceState state, NMDeviceStateReason reason,
     if (state > NM_DEVICE_STATE_DISCONNECTED)
         nm_device_assume_state_reset(self);
 
+    if (state < NM_DEVICE_STATE_UNAVAILABLE
+        || (state >= NM_DEVICE_STATE_IP_CONFIG && state < NM_DEVICE_STATE_ACTIVATED)) {
+        /* preserve-external-ports is used by NMCheckpoint to activate a master
+         * device, and preserve already attached ports. This means, this state is only
+         * relevant during the deactivation and the following activation of the
+         * right profile. Once we are sufficiently far in the activation of the
+         * intended profile, we clear the state again. */
+        nm_device_activation_state_set_preserve_external_ports(self, FALSE);
+    }
+
     if (state <= NM_DEVICE_STATE_UNAVAILABLE) {
         if (available_connections_del_all(self))
             _notify(self, PROP_AVAILABLE_CONNECTIONS);
@@ -15791,6 +15816,50 @@ nm_device_get_state(NMDevice *self)
 }
 
 /*****************************************************************************/
+
+/**
+ * nm_device_activation_state_set_preserve_external_ports:
+ * @self: the NMDevice.
+ * @flag: whether to set or clear the the flag.
+ *
+ * This sets an internal flag to true, which does something specific.
+ * For non-master devices, it has no effect. For master devices, this
+ * will prevent to detach all external ports, until the next activation
+ * completes.
+ *
+ * This is used during checkpoint/rollback. We may want to preserve
+ * externally attached ports during the restore. NMCheckpoint will
+ * call this before doing a re-activation. By setting the flag,
+ * we basically preserve such ports.
+ *
+ * Once we reach again ACTIVATED state, the flag gets cleared. This
+ * only has effect for the next activation cycle. */
+void
+nm_device_activation_state_set_preserve_external_ports(NMDevice *self, gboolean flag)
+{
+    NMDevicePrivate *priv;
+
+    g_return_if_fail(NM_IS_DEVICE(self));
+
+    priv = NM_DEVICE_GET_PRIVATE(self);
+
+    if (!NM_IS_DEVICE_BRIDGE(self)) {
+        /* This is actually only implemented for bridge devices. While it might
+         * make sense for bond/team or OVS, it's not clear that it is actually
+         * useful or desirable. */
+        return;
+    }
+
+    if (priv->activation_state_preserve_external_ports == flag)
+        return;
+
+    priv->activation_state_preserve_external_ports = flag;
+    _LOGD(LOGD_DEVICE,
+          "activation-state: preserve-external-ports %s",
+          flag ? "enabled" : "disabled");
+}
+
+/*****************************************************************************/
 /* NMConfigDevice interface related stuff */
 
 const char *
diff --git a/src/core/devices/nm-device.h b/src/core/devices/nm-device.h
index cfcd4ade..a7badb86 100644
--- a/src/core/devices/nm-device.h
+++ b/src/core/devices/nm-device.h
@@ -444,6 +444,8 @@ NMDeviceType nm_device_get_device_type(NMDevice *dev);
 NMLinkType   nm_device_get_link_type(NMDevice *dev);
 NMMetered    nm_device_get_metered(NMDevice *dev);
 
+void nm_device_activation_state_set_preserve_external_ports(NMDevice *self, gboolean flag);
+
 guint32 nm_device_get_route_table(NMDevice *self, int addr_family);
 guint32 nm_device_get_route_metric(NMDevice *dev, int addr_family);
 
diff --git a/src/core/devices/ovs/nm-device-ovs-port.c b/src/core/devices/ovs/nm-device-ovs-port.c
index 8406c364..116f58c4 100644
--- a/src/core/devices/ovs/nm-device-ovs-port.c
+++ b/src/core/devices/ovs/nm-device-ovs-port.c
@@ -188,8 +188,10 @@ del_iface_cb(GError *error, gpointer user_data)
 static void
 release_slave(NMDevice *device, NMDevice *slave, gboolean configure)
 {
-    NMDeviceOvsPort *self = NM_DEVICE_OVS_PORT(device);
-    bool slave_removed = nm_device_sys_iface_state_get(slave) == NM_DEVICE_SYS_IFACE_STATE_REMOVED;
+    NMDeviceOvsPort *self              = NM_DEVICE_OVS_PORT(device);
+    bool             slave_not_managed = !NM_IN_SET(nm_device_sys_iface_state_get(slave),
+                                        NM_DEVICE_SYS_IFACE_STATE_MANAGED,
+                                        NM_DEVICE_SYS_IFACE_STATE_ASSUME);
 
     _LOGI(LOGD_DEVICE, "releasing ovs interface %s", nm_device_get_ip_iface(slave));
 
@@ -197,7 +199,7 @@ release_slave(NMDevice *device, NMDevice *slave, gboolean configure)
      * removed and thus we're called with configure=FALSE), we still need
      * to make sure its OVSDB entry is gone.
      */
-    if (configure || slave_removed) {
+    if (configure || slave_not_managed) {
         nm_ovsdb_del_interface(nm_ovsdb_get(),
                                nm_device_get_iface(slave),
                                del_iface_cb,
diff --git a/src/core/devices/wwan/nm-modem-broadband.c b/src/core/devices/wwan/nm-modem-broadband.c
index f5336d37..b585652e 100644
--- a/src/core/devices/wwan/nm-modem-broadband.c
+++ b/src/core/devices/wwan/nm-modem-broadband.c
@@ -1032,6 +1032,7 @@ stage3_ip_config_start(NMModem *modem, int addr_family, NMModemIPMethod ip_metho
         l3cd = nm_l3_config_data_new(nm_platform_get_multi_idx(NM_PLATFORM_GET),
                                      ifindex,
                                      NM_IP_CONFIG_SOURCE_WWAN);
+        nm_l3_config_data_set_dns_priority(l3cd, AF_INET, 0);
 
         address = (NMPlatformIP4Address){
             .address      = address_network,
@@ -1118,6 +1119,7 @@ stage3_ip_config_start(NMModem *modem, int addr_family, NMModemIPMethod ip_metho
         l3cd = nm_l3_config_data_new(nm_platform_get_multi_idx(NM_PLATFORM_GET),
                                      ifindex,
                                      NM_IP_CONFIG_SOURCE_WWAN);
+        nm_l3_config_data_set_dns_priority(l3cd, AF_INET6, 0);
 
         do_auto = TRUE;
generated by cgit-pink 1.3.0-6-gf8a5 (git 2.35.1) at 2026-08-27 17:39:27 +0000