[ 1677.592058] br0: port 1(dummy0) entered blocking state
[ 1677.592131] br0: port 1(dummy0) entered disabled state
[ 1677.592201] dummy0: entered allmulticast mode
[ 1677.592283] dummy0: entered promiscuous mode
[ 1677.595026] br0: port 1(dummy0) entered blocking state
[ 1677.595058] br0: port 1(dummy0) entered forwarding state
[ 1677.773545] dummy0: left allmulticast mode
[ 1677.773607] dummy0: left promiscuous mode
[ 1677.773666] br0: port 1(dummy0) entered disabled state