[ 1667.314039] br0: port 1(dummy0) entered blocking state
[ 1667.314083] br0: port 1(dummy0) entered disabled state
[ 1667.314120] dummy0: entered allmulticast mode
[ 1667.314171] dummy0: entered promiscuous mode
[ 1667.316661] br0: port 1(dummy0) entered blocking state
[ 1667.316723] br0: port 1(dummy0) entered forwarding state
[ 1667.495062] dummy0: left allmulticast mode
[ 1667.495094] dummy0: left promiscuous mode
[ 1667.495120] br0: port 1(dummy0) entered disabled state