[ 1710.038694] br0: port 1(dummy0) entered blocking state
[ 1710.038737] br0: port 1(dummy0) entered disabled state
[ 1710.038773] dummy0: entered allmulticast mode
[ 1710.038833] dummy0: entered promiscuous mode
[ 1710.041708] br0: port 1(dummy0) entered blocking state
[ 1710.041772] br0: port 1(dummy0) entered forwarding state
[ 1710.231292] dummy0: left allmulticast mode
[ 1710.231317] dummy0: left promiscuous mode
[ 1710.231344] br0: port 1(dummy0) entered disabled state