[ 1712.853929] br0: port 1(dummy0) entered blocking state
[ 1712.854004] br0: port 1(dummy0) entered disabled state
[ 1712.854078] dummy0: entered allmulticast mode
[ 1712.854166] dummy0: entered promiscuous mode
[ 1712.856632] br0: port 1(dummy0) entered blocking state
[ 1712.856669] br0: port 1(dummy0) entered forwarding state
[ 1713.034834] dummy0: left allmulticast mode
[ 1713.034863] dummy0: left promiscuous mode
[ 1713.034894] br0: port 1(dummy0) entered disabled state