lxd/network/driver/physical: Do full start following change of parent

Signed-off-by: Stéphane Graber <[email protected]>
(cherry picked from commit a798f4fa661c9b477eb73a7878ab811e596b53e4)
Signed-off-by: Nikita Mezhenskyi <[email protected]>
License: Apache-2.0

Author: stgraber

lxd/network/driver_physical.go

@@ -491,9 +491,16 @@ func (n *physical) Update(newNetwork api.NetworkPut, targetNode string, clientTy
 		return err
 	}
 
-	err = n.setup(oldNetwork.Config)
-	if err != nil {
-		return err
+	if !hostNameChanged {
+		err = n.setup(oldNetwork.Config)
+		if err != nil {
+			return err
+		}
+	} else {
+		err = n.setup(nil)
+		if err != nil {
+			return err
+		}
 	}
 
 	revert.Success()