diff options
Diffstat (limited to 'net/bridge/br_notify.c')
| -rw-r--r-- | net/bridge/br_notify.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/bridge/br_notify.c b/net/bridge/br_notify.c index 763a3ec292e5..1413b72acc7f 100644 --- a/net/bridge/br_notify.c +++ b/net/bridge/br_notify.c @@ -82,6 +82,10 @@ static int br_device_event(struct notifier_block *unused, unsigned long event, v case NETDEV_UNREGISTER: br_del_if(br, dev); break; + + case NETDEV_PRE_TYPE_CHANGE: + /* Forbid underlaying device to change its type. */ + return NOTIFY_BAD; } /* Events that may cause spanning tree to refresh */ |