[ 1729.429695] br0: port 1(dummy0) entered blocking state
[ 1729.429734] br0: port 1(dummy0) entered disabled state
[ 1729.429775] dummy0: entered allmulticast mode
[ 1729.429826] dummy0: entered promiscuous mode
[ 1729.433236] br0: port 1(dummy0) entered blocking state
[ 1729.433303] br0: port 1(dummy0) entered forwarding state
[ 1729.665492] dummy0: left allmulticast mode
[ 1729.665538] dummy0: left promiscuous mode
[ 1729.665628] br0: port 1(dummy0) entered disabled state