[ 1701.592715] br0: port 1(dummy0) entered blocking state
[ 1701.592787] br0: port 1(dummy0) entered disabled state
[ 1701.592855] dummy0: entered allmulticast mode
[ 1701.592940] dummy0: entered promiscuous mode
[ 1701.596209] br0: port 1(dummy0) entered blocking state
[ 1701.596240] br0: port 1(dummy0) entered forwarding state
[ 1701.808065] dummy0: left allmulticast mode
[ 1701.808114] dummy0: left promiscuous mode
[ 1701.808167] br0: port 1(dummy0) entered disabled state