[ 1560.385145] br0: port 1(dummy0) entered blocking state
[ 1560.385222] br0: port 1(dummy0) entered disabled state
[ 1560.385281] dummy0: entered allmulticast mode
[ 1560.385362] dummy0: entered promiscuous mode
[ 1560.387734] br0: port 1(dummy0) entered blocking state
[ 1560.387762] br0: port 1(dummy0) entered forwarding state
[ 1560.550290] dummy0: left allmulticast mode
[ 1560.550351] dummy0: left promiscuous mode
[ 1560.550407] br0: port 1(dummy0) entered disabled state