[ 1930.704573] br0: port 1(dummy0) entered blocking state
[ 1930.704647] br0: port 1(dummy0) entered disabled state
[ 1930.704712] dummy0: entered allmulticast mode
[ 1930.704793] dummy0: entered promiscuous mode
[ 1930.708270] br0: port 1(dummy0) entered blocking state
[ 1930.708305] br0: port 1(dummy0) entered forwarding state
[ 1930.971317] dummy0: left allmulticast mode
[ 1930.971402] dummy0: left promiscuous mode
[ 1930.971464] br0: port 1(dummy0) entered disabled state