[ 1930.390189] br0: port 1(dummy0) entered blocking state
[ 1930.390266] br0: port 1(dummy0) entered disabled state
[ 1930.390336] dummy0: entered allmulticast mode
[ 1930.390419] dummy0: entered promiscuous mode
[ 1930.393975] br0: port 1(dummy0) entered blocking state
[ 1930.394007] br0: port 1(dummy0) entered forwarding state
[ 1930.639701] dummy0: left allmulticast mode
[ 1930.639732] dummy0: left promiscuous mode
[ 1930.639763] br0: port 1(dummy0) entered disabled state