[ 2273.187595] br0: port 1(dummy0) entered blocking state
[ 2273.187627] br0: port 1(dummy0) entered disabled state
[ 2273.187661] dummy0: entered allmulticast mode
[ 2273.187713] dummy0: entered promiscuous mode
[ 2273.191115] br0: port 1(dummy0) entered blocking state
[ 2273.191144] br0: port 1(dummy0) entered forwarding state
[ 2273.434213] dummy0: left allmulticast mode
[ 2273.434245] dummy0: left promiscuous mode
[ 2273.434278] br0: port 1(dummy0) entered disabled state