[ 1706.885307] br0: port 1(dummy0) entered blocking state
[ 1706.885381] br0: port 1(dummy0) entered disabled state
[ 1706.885449] dummy0: entered allmulticast mode
[ 1706.885531] dummy0: entered promiscuous mode
[ 1706.888453] br0: port 1(dummy0) entered blocking state
[ 1706.888486] br0: port 1(dummy0) entered forwarding state
[ 1707.078671] dummy0: left allmulticast mode
[ 1707.078756] dummy0: left promiscuous mode
[ 1707.078817] br0: port 1(dummy0) entered disabled state