[ 1856.283309][T13605] br0: port 1(dummy0) entered blocking state
[ 1856.283455][T13605] br0: port 1(dummy0) entered disabled state
[ 1856.283572][T13605] dummy0: entered allmulticast mode
[ 1856.284066][T13605] dummy0: entered promiscuous mode
[ 1856.297920][T13606] br0: port 1(dummy0) entered blocking state
[ 1856.298045][T13606] br0: port 1(dummy0) entered forwarding state
[ 1857.521879][   T12] dummy0: left allmulticast mode
[ 1857.522014][   T12] dummy0: left promiscuous mode
[ 1857.522168][   T12] br0: port 1(dummy0) entered disabled state