[ 2230.953591][T15392] br0: port 1(dummy0) entered blocking state
[ 2230.953903][T15392] br0: port 1(dummy0) entered disabled state
[ 2230.954184][T15392] dummy0: entered allmulticast mode
[ 2230.955329][T15392] dummy0: entered promiscuous mode
[ 2230.990568][T15393] br0: port 1(dummy0) entered blocking state
[ 2230.991103][T15393] br0: port 1(dummy0) entered forwarding state
[ 2233.515226][   T12] dummy0: left allmulticast mode
[ 2233.516197][   T12] dummy0: left promiscuous mode
[ 2233.516657][   T12] br0: port 1(dummy0) entered disabled state