[ 1659.267492] br0: port 1(dummy0) entered blocking state
[ 1659.267527] br0: port 1(dummy0) entered disabled state
[ 1659.267560] dummy0: entered allmulticast mode
[ 1659.267604] dummy0: entered promiscuous mode
[ 1659.270440] br0: port 1(dummy0) entered blocking state
[ 1659.270506] br0: port 1(dummy0) entered forwarding state
[ 1659.466849] dummy0: left allmulticast mode
[ 1659.466907] dummy0: left promiscuous mode
[ 1659.466940] br0: port 1(dummy0) entered disabled state