[ 2139.398855][ T9632] br0: port 1(dummy0) entered blocking state
[ 2139.399047][ T9632] br0: port 1(dummy0) entered disabled state
[ 2139.399209][ T9632] dummy0: entered allmulticast mode
[ 2139.400768][ T9632] dummy0: entered promiscuous mode
[ 2139.429293][ T9633] br0: port 1(dummy0) entered blocking state
[ 2139.429663][ T9633] br0: port 1(dummy0) entered forwarding state
[ 2141.400572][   T12] dummy0: left allmulticast mode
[ 2141.401217][   T12] dummy0: left promiscuous mode
[ 2141.401440][   T12] br0: port 1(dummy0) entered disabled state