[ 1896.665900][ T9711] br0: port 1(dummy0) entered blocking state
[ 1896.666098][ T9711] br0: port 1(dummy0) entered disabled state
[ 1896.666256][ T9711] dummy0: entered allmulticast mode
[ 1896.667251][ T9711] dummy0: entered promiscuous mode
[ 1896.703091][ T9712] br0: port 1(dummy0) entered blocking state
[ 1896.703348][ T9712] br0: port 1(dummy0) entered forwarding state
[ 1898.687317][   T12] dummy0: left allmulticast mode
[ 1898.687956][   T12] dummy0: left promiscuous mode
[ 1898.688179][   T12] br0: port 1(dummy0) entered disabled state