[ 1710.621579] br0: port 1(dummy0) entered blocking state
[ 1710.621644] br0: port 1(dummy0) entered disabled state
[ 1710.621709] dummy0: entered allmulticast mode
[ 1710.621795] dummy0: entered promiscuous mode
[ 1710.624583] br0: port 1(dummy0) entered blocking state
[ 1710.624613] br0: port 1(dummy0) entered forwarding state
[ 1710.816218] dummy0: left allmulticast mode
[ 1710.816247] dummy0: left promiscuous mode
[ 1710.816273] br0: port 1(dummy0) entered disabled state