[ 1648.034405] br0: port 1(dummy0) entered blocking state
[ 1648.034484] br0: port 1(dummy0) entered disabled state
[ 1648.034554] dummy0: entered allmulticast mode
[ 1648.034657] dummy0: entered promiscuous mode
[ 1648.037546] br0: port 1(dummy0) entered blocking state
[ 1648.037583] br0: port 1(dummy0) entered forwarding state
[ 1648.224983] dummy0: left allmulticast mode
[ 1648.225015] dummy0: left promiscuous mode
[ 1648.225045] br0: port 1(dummy0) entered disabled state