[ 1711.673491] br0: port 1(dummy0) entered blocking state
[ 1711.673542] br0: port 1(dummy0) entered disabled state
[ 1711.673577] dummy0: entered allmulticast mode
[ 1711.673626] dummy0: entered promiscuous mode
[ 1711.676543] br0: port 1(dummy0) entered blocking state
[ 1711.676577] br0: port 1(dummy0) entered forwarding state
[ 1711.871206] dummy0: left allmulticast mode
[ 1711.871282] dummy0: left promiscuous mode
[ 1711.871371] br0: port 1(dummy0) entered disabled state