diff options
Diffstat (limited to 'net/8021q/vlan.c')
| -rw-r--r-- | net/8021q/vlan.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 453512266ea..c39a5f41169 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -530,6 +530,10 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event, } unregister_netdevice_many(&list); break; + + case NETDEV_PRE_TYPE_CHANGE: + /* Forbid underlaying device to change its type. */ + return NOTIFY_BAD; } out: |