[ 1550.635926] br0: port 1(dummy0) entered blocking state
[ 1550.635965] br0: port 1(dummy0) entered disabled state
[ 1550.635997] dummy0: entered allmulticast mode
[ 1550.636039] dummy0: entered promiscuous mode
[ 1550.638508] br0: port 1(dummy0) entered blocking state
[ 1550.638565] br0: port 1(dummy0) entered forwarding state
[ 1550.804630] dummy0: left allmulticast mode
[ 1550.804663] dummy0: left promiscuous mode
[ 1550.804746] br0: port 1(dummy0) entered disabled state