[ 1768.461123] br0: port 1(dummy0) entered blocking state
[ 1768.461173] br0: port 1(dummy0) entered disabled state
[ 1768.461210] dummy0: entered allmulticast mode
[ 1768.461256] dummy0: entered promiscuous mode
[ 1768.464110] br0: port 1(dummy0) entered blocking state
[ 1768.464171] br0: port 1(dummy0) entered forwarding state
[ 1768.648084] dummy0: left allmulticast mode
[ 1768.648148] dummy0: left promiscuous mode
[ 1768.648209] br0: port 1(dummy0) entered disabled state