device: release and enslave an interface if its master changed

In case of an atomic master change, we'd not notice that the master changed:

  ip link set dummy0 master bridge0
  ip link set dummy0 master bridge1

1 files changed, 3 insertions, 2 deletions

diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index f834875cbf..0956135a97 100644
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -1180,6 +1180,8 @@ device_link_changed (NMDevice *self, NMPlatformLink *info)
 	}
 
 	/* Update slave status for external changes */
+	if (priv->enslaved && info->master != nm_device_get_ifindex (priv->master))
+		nm_device_release_one_slave (priv->master, self, FALSE, NM_DEVICE_STATE_REASON_NONE);
 	if (info->master && !priv->enslaved) {
 		NMDevice *master;
 
@@ -1197,8 +1199,7 @@ device_link_changed (NMDevice *self, NMPlatformLink *info)
 			       info->master,
 			       nm_platform_link_get_name (info->master));
 		}
-	} else if (priv->enslaved && !info->master)
-		nm_device_release_one_slave (priv->master, self, FALSE, NM_DEVICE_STATE_REASON_NONE);
+	}
 
 	if (klass->link_changed)
 		klass->link_changed (self, info);