[ 1574.230648] br0: port 1(dummy0) entered blocking state
[ 1574.230723] br0: port 1(dummy0) entered disabled state
[ 1574.230789] dummy0: entered allmulticast mode
[ 1574.230877] dummy0: entered promiscuous mode
[ 1574.233508] br0: port 1(dummy0) entered blocking state
[ 1574.233546] br0: port 1(dummy0) entered forwarding state
[ 1574.428862] dummy0: left allmulticast mode
[ 1574.428896] dummy0: left promiscuous mode
[ 1574.428986] br0: port 1(dummy0) entered disabled state