[ 1681.510423] br0: port 1(dummy0) entered blocking state
[ 1681.510467] br0: port 1(dummy0) entered disabled state
[ 1681.510502] dummy0: entered allmulticast mode
[ 1681.510548] dummy0: entered promiscuous mode
[ 1681.513371] br0: port 1(dummy0) entered blocking state
[ 1681.513432] br0: port 1(dummy0) entered forwarding state
[ 1681.707444] dummy0: left allmulticast mode
[ 1681.707473] dummy0: left promiscuous mode
[ 1681.707504] br0: port 1(dummy0) entered disabled state