[ 1815.624850] br0: port 1(dummy0) entered blocking state
[ 1815.624891] br0: port 1(dummy0) entered disabled state
[ 1815.624939] dummy0: entered allmulticast mode
[ 1815.624992] dummy0: entered promiscuous mode
[ 1815.628502] br0: port 1(dummy0) entered blocking state
[ 1815.628563] br0: port 1(dummy0) entered forwarding state
[ 1815.871703] dummy0: left allmulticast mode
[ 1815.871745] dummy0: left promiscuous mode
[ 1815.871828] br0: port 1(dummy0) entered disabled state