[ 1940.206471][T14856] br0: port 1(dummy0) entered blocking state
[ 1940.206713][T14856] br0: port 1(dummy0) entered disabled state
[ 1940.207492][T14856] dummy0: entered allmulticast mode
[ 1940.209048][T14856] dummy0: entered promiscuous mode
[ 1940.231776][T14857] br0: port 1(dummy0) entered blocking state
[ 1940.232030][T14857] br0: port 1(dummy0) entered forwarding state
[ 1942.208086][   T12] dummy0: left allmulticast mode
[ 1942.209175][   T12] dummy0: left promiscuous mode
[ 1942.209406][   T12] br0: port 1(dummy0) entered disabled state