[ 1560.387526] br0: port 1(dummy0) entered blocking state
[ 1560.387565] br0: port 1(dummy0) entered disabled state
[ 1560.387601] dummy0: entered allmulticast mode
[ 1560.387657] dummy0: entered promiscuous mode
[ 1560.390396] br0: port 1(dummy0) entered blocking state
[ 1560.390458] br0: port 1(dummy0) entered forwarding state
[ 1560.580024] dummy0: left allmulticast mode
[ 1560.580051] dummy0: left promiscuous mode
[ 1560.580080] br0: port 1(dummy0) entered disabled state