[ 1560.914449] br0: port 1(dummy0) entered blocking state
[ 1560.914526] br0: port 1(dummy0) entered disabled state
[ 1560.914600] dummy0: entered allmulticast mode
[ 1560.914695] dummy0: entered promiscuous mode
[ 1560.917530] br0: port 1(dummy0) entered blocking state
[ 1560.917561] br0: port 1(dummy0) entered forwarding state
[ 1561.118719] dummy0: left allmulticast mode
[ 1561.118759] dummy0: left promiscuous mode
[ 1561.118793] br0: port 1(dummy0) entered disabled state