[ 1962.221901][T31844] br0: port 1(dummy0) entered blocking state
[ 1962.222097][T31844] br0: port 1(dummy0) entered disabled state
[ 1962.222273][T31844] dummy0: entered allmulticast mode
[ 1962.223525][T31844] dummy0: entered promiscuous mode
[ 1962.248748][T31845] br0: port 1(dummy0) entered blocking state
[ 1962.249099][T31845] br0: port 1(dummy0) entered forwarding state
[ 1964.099272][   T12] dummy0: left allmulticast mode
[ 1964.099563][   T12] dummy0: left promiscuous mode
[ 1964.099782][   T12] br0: port 1(dummy0) entered disabled state