[ 1797.308360] br0: port 1(dummy0) entered blocking state
[ 1797.308396] br0: port 1(dummy0) entered disabled state
[ 1797.308418] dummy0: entered allmulticast mode
[ 1797.308454] dummy0: entered promiscuous mode
[ 1797.312145] br0: port 1(dummy0) entered blocking state
[ 1797.312166] br0: port 1(dummy0) entered forwarding state
[ 1797.573863] dummy0: left allmulticast mode
[ 1797.573891] dummy0: left promiscuous mode
[ 1797.573913] br0: port 1(dummy0) entered disabled state