--- x/net/8021q/vlan.c
+++ y/net/8021q/vlan.c
@@ -486,6 +486,7 @@ static int vlan_device_event(struct noti
 				break;
 		}
 		unregister_netdevice_many(&list);
+		unregister_vlan_dev(dev, NULL);
 		break;
 
 	case NETDEV_PRE_TYPE_CHANGE: