[ 2241.550726][T20754] br0: port 1(dummy0) entered blocking state
[ 2241.550921][T20754] br0: port 1(dummy0) entered disabled state
[ 2241.551091][T20754] dummy0: entered allmulticast mode
[ 2241.552080][T20754] dummy0: entered promiscuous mode
[ 2241.583262][T20755] br0: port 1(dummy0) entered blocking state
[ 2241.583640][T20755] br0: port 1(dummy0) entered forwarding state
[ 2244.016648][   T12] dummy0: left allmulticast mode
[ 2244.017315][   T12] dummy0: left promiscuous mode
[ 2244.017800][   T12] br0: port 1(dummy0) entered disabled state