[ 1555.911791] br0: port 1(dummy0) entered blocking state
[ 1555.911833] br0: port 1(dummy0) entered disabled state
[ 1555.911863] dummy0: entered allmulticast mode
[ 1555.911918] dummy0: entered promiscuous mode
[ 1555.914363] br0: port 1(dummy0) entered blocking state
[ 1555.914424] br0: port 1(dummy0) entered forwarding state
[ 1556.105809] dummy0: left allmulticast mode
[ 1556.105843] dummy0: left promiscuous mode
[ 1556.105872] br0: port 1(dummy0) entered disabled state