[ 1932.990617] br0: port 1(dummy0) entered blocking state
[ 1932.990710] br0: port 1(dummy0) entered disabled state
[ 1932.990789] dummy0: entered allmulticast mode
[ 1932.990881] dummy0: entered promiscuous mode
[ 1932.994537] br0: port 1(dummy0) entered blocking state
[ 1932.994573] br0: port 1(dummy0) entered forwarding state
[ 1933.240061] dummy0: left allmulticast mode
[ 1933.240112] dummy0: left promiscuous mode
[ 1933.240169] br0: port 1(dummy0) entered disabled state