[ 1666.520145] br0: port 1(dummy0) entered blocking state
[ 1666.520223] br0: port 1(dummy0) entered disabled state
[ 1666.520292] dummy0: entered allmulticast mode
[ 1666.520372] dummy0: entered promiscuous mode
[ 1666.522932] br0: port 1(dummy0) entered blocking state
[ 1666.522967] br0: port 1(dummy0) entered forwarding state
[ 1666.725759] dummy0: left allmulticast mode
[ 1666.725823] dummy0: left promiscuous mode
[ 1666.725880] br0: port 1(dummy0) entered disabled state