From: Michael Biebl <biebl@debian.org>
Date: Thu, 10 Jul 2014 03:38:42 +0200
Subject: Mark virtual ethernet interfaces as unmanaged

We do not want to interfere with VBox and VMware network interfaces, so ignore
any virtual ethernet interfaces and mark them as unmanaged.
---
 src/devices/nm-device-ethernet.c | 41 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/src/devices/nm-device-ethernet.c b/src/devices/nm-device-ethernet.c
index ac408d3..116d4d3 100644
--- a/src/devices/nm-device-ethernet.c
+++ b/src/devices/nm-device-ethernet.c
@@ -250,6 +250,45 @@ out:
 	g_object_unref (client);
 }
 
+static void
+nm_device_check_virtual (NMDeviceEthernet *self)
+{
+	GUdevDevice *dev = NULL;
+	GUdevClient *client = NULL;
+	const char *iface = NULL;
+	const char *subsystems[] = { "net", NULL };
+	const char *sysfs_path;
+	const char *virtual = "/sys/devices/virtual/net";
+
+	iface = nm_device_get_iface (NM_DEVICE (self));
+
+	client = g_udev_client_new (subsystems);
+	if (!client) {
+		nm_log_warn (LOGD_DEVICE | LOGD_HW, "(%s): failed to initialize GUdev client", iface);
+		goto out;
+	}
+
+	dev = g_udev_client_query_by_subsystem_and_name (client, "net", iface);
+	if (!dev) {
+		nm_log_warn (LOGD_DEVICE | LOGD_HW, "(%s): failed to find device with udev", iface);
+		goto out;
+	}
+
+	sysfs_path = g_udev_device_get_sysfs_path (dev);
+
+	if (g_ascii_strncasecmp (sysfs_path, virtual, strlen (virtual)) == 0) {
+		nm_log_info (LOGD_DEVICE | LOGD_HW, "(%s): device is virtual, marking as unmanaged", iface);
+		nm_device_set_initial_unmanaged_flag (NM_DEVICE (self), NM_UNMANAGED_DEFAULT, TRUE);
+	}
+
+out:
+	if (client)
+		g_object_unref (client);
+	if (dev)
+		g_object_unref (dev);
+}
+
+
 static GObject*
 constructor (GType type,
              guint n_construct_params,
@@ -272,6 +311,8 @@ constructor (GType type,
 
 		/* s390 stuff */
 		_update_s390_subchannels (NM_DEVICE_ETHERNET (object));
+
+		nm_device_check_virtual (NM_DEVICE_ETHERNET (object));
 	}
 
 	return object;