[ 2127.302258][ T8129] br0: port 1(dummy0) entered blocking state
[ 2127.302497][ T8129] br0: port 1(dummy0) entered disabled state
[ 2127.302718][ T8129] dummy0: entered allmulticast mode
[ 2127.303647][ T8129] dummy0: entered promiscuous mode
[ 2127.332083][ T8130] br0: port 1(dummy0) entered blocking state
[ 2127.332263][ T8130] br0: port 1(dummy0) entered forwarding state
[ 2129.245831][   T12] dummy0: left allmulticast mode
[ 2129.246015][   T12] dummy0: left promiscuous mode
[ 2129.246244][   T12] br0: port 1(dummy0) entered disabled state