[ 1978.215110] br0: port 1(dummy0) entered blocking state
[ 1978.215148] br0: port 1(dummy0) entered disabled state
[ 1978.215176] dummy0: entered allmulticast mode
[ 1978.215220] dummy0: entered promiscuous mode
[ 1978.217959] br0: port 1(dummy0) entered blocking state
[ 1978.217990] br0: port 1(dummy0) entered forwarding state
[ 1978.413685] dummy0: left allmulticast mode
[ 1978.413722] dummy0: left promiscuous mode
[ 1978.413808] br0: port 1(dummy0) entered disabled state