[ 1633.972251] br0: port 1(dummy0) entered blocking state
[ 1633.972291] br0: port 1(dummy0) entered disabled state
[ 1633.972327] dummy0: entered allmulticast mode
[ 1633.972377] dummy0: entered promiscuous mode
[ 1633.975225] br0: port 1(dummy0) entered blocking state
[ 1633.975264] br0: port 1(dummy0) entered forwarding state
[ 1634.165533] dummy0: left allmulticast mode
[ 1634.165565] dummy0: left promiscuous mode
[ 1634.165593] br0: port 1(dummy0) entered disabled state