[ 1807.726474] br0: port 1(dummy0) entered blocking state
[ 1807.726549] br0: port 1(dummy0) entered disabled state
[ 1807.726617] dummy0: entered allmulticast mode
[ 1807.726710] dummy0: entered promiscuous mode
[ 1807.730042] br0: port 1(dummy0) entered blocking state
[ 1807.730076] br0: port 1(dummy0) entered forwarding state
[ 1807.954417] dummy0: left allmulticast mode
[ 1807.954454] dummy0: left promiscuous mode
[ 1807.954512] br0: port 1(dummy0) entered disabled state