[ 1771.388604] br0: port 1(dummy0) entered blocking state
[ 1771.388647] br0: port 1(dummy0) entered disabled state
[ 1771.388678] dummy0: entered allmulticast mode
[ 1771.388737] dummy0: entered promiscuous mode
[ 1771.391451] br0: port 1(dummy0) entered blocking state
[ 1771.391481] br0: port 1(dummy0) entered forwarding state
[ 1771.598287] dummy0: left allmulticast mode
[ 1771.598328] dummy0: left promiscuous mode
[ 1771.598359] br0: port 1(dummy0) entered disabled state