[ 2202.103925][ T8580] br0: port 1(dummy0) entered blocking state
[ 2202.104275][ T8580] br0: port 1(dummy0) entered disabled state
[ 2202.104593][ T8580] dummy0: entered allmulticast mode
[ 2202.105669][ T8580] dummy0: entered promiscuous mode
[ 2202.144195][ T8581] br0: port 1(dummy0) entered blocking state
[ 2202.144526][ T8581] br0: port 1(dummy0) entered forwarding state
[ 2204.737883][   T12] dummy0: left allmulticast mode
[ 2204.738164][   T12] dummy0: left promiscuous mode
[ 2204.738481][   T12] br0: port 1(dummy0) entered disabled state