[ 1733.224601] br0: port 1(dummy0) entered blocking state
[ 1733.224642] br0: port 1(dummy0) entered disabled state
[ 1733.224676] dummy0: entered allmulticast mode
[ 1733.224732] dummy0: entered promiscuous mode
[ 1733.227538] br0: port 1(dummy0) entered blocking state
[ 1733.227570] br0: port 1(dummy0) entered forwarding state
[ 1733.435125] dummy0: left allmulticast mode
[ 1733.435159] dummy0: left promiscuous mode
[ 1733.435195] br0: port 1(dummy0) entered disabled state