[ 2257.971123][ T9223] br0: port 1(dummy0) entered blocking state
[ 2257.971367][ T9223] br0: port 1(dummy0) entered disabled state
[ 2257.971582][ T9223] dummy0: entered allmulticast mode
[ 2257.972529][ T9223] dummy0: entered promiscuous mode
[ 2258.009642][ T9224] br0: port 1(dummy0) entered blocking state
[ 2258.009820][ T9224] br0: port 1(dummy0) entered forwarding state
[ 2260.375086][   T69] dummy0: left allmulticast mode
[ 2260.375796][   T69] dummy0: left promiscuous mode
[ 2260.376027][   T69] br0: port 1(dummy0) entered disabled state