[ 1780.117483] br0: port 1(dummy0) entered blocking state
[ 1780.117559] br0: port 1(dummy0) entered disabled state
[ 1780.117631] dummy0: entered allmulticast mode
[ 1780.117720] dummy0: entered promiscuous mode
[ 1780.120481] br0: port 1(dummy0) entered blocking state
[ 1780.120513] br0: port 1(dummy0) entered forwarding state
[ 1780.308199] dummy0: left allmulticast mode
[ 1780.308230] dummy0: left promiscuous mode
[ 1780.308264] br0: port 1(dummy0) entered disabled state