[ 1723.023947] br0: port 1(dummy0) entered blocking state
[ 1723.024027] br0: port 1(dummy0) entered disabled state
[ 1723.024091] dummy0: entered allmulticast mode
[ 1723.024170] dummy0: entered promiscuous mode
[ 1723.027054] br0: port 1(dummy0) entered blocking state
[ 1723.027088] br0: port 1(dummy0) entered forwarding state
[ 1723.216888] dummy0: left allmulticast mode
[ 1723.216918] dummy0: left promiscuous mode
[ 1723.216947] br0: port 1(dummy0) entered disabled state