[ 1690.316368] br0: port 1(dummy0) entered blocking state
[ 1690.316441] br0: port 1(dummy0) entered disabled state
[ 1690.316505] dummy0: entered allmulticast mode
[ 1690.316589] dummy0: entered promiscuous mode
[ 1690.319086] br0: port 1(dummy0) entered blocking state
[ 1690.319121] br0: port 1(dummy0) entered forwarding state
[ 1690.499816] dummy0: left allmulticast mode
[ 1690.499849] dummy0: left promiscuous mode
[ 1690.499873] br0: port 1(dummy0) entered disabled state