[ 1604.866017] br0: port 1(dummy0) entered blocking state
[ 1604.866049] br0: port 1(dummy0) entered disabled state
[ 1604.866071] dummy0: entered allmulticast mode
[ 1604.866112] dummy0: entered promiscuous mode
[ 1604.868799] br0: port 1(dummy0) entered blocking state
[ 1604.868850] br0: port 1(dummy0) entered forwarding state
[ 1605.044898] dummy0: left allmulticast mode
[ 1605.044978] dummy0: left promiscuous mode
[ 1605.045030] br0: port 1(dummy0) entered disabled state