[ 2121.623505] br0: port 1(dummy0) entered blocking state
[ 2121.623544] br0: port 1(dummy0) entered disabled state
[ 2121.623580] dummy0: entered allmulticast mode
[ 2121.623631] dummy0: entered promiscuous mode
[ 2121.626488] br0: port 1(dummy0) entered blocking state
[ 2121.626521] br0: port 1(dummy0) entered forwarding state
[ 2121.824538] dummy0: left allmulticast mode
[ 2121.824568] dummy0: left promiscuous mode
[ 2121.824597] br0: port 1(dummy0) entered disabled state