[ 1686.208339] br0: port 1(dummy0) entered blocking state
[ 1686.208418] br0: port 1(dummy0) entered disabled state
[ 1686.208486] dummy0: entered allmulticast mode
[ 1686.208571] dummy0: entered promiscuous mode
[ 1686.211014] br0: port 1(dummy0) entered blocking state
[ 1686.211083] br0: port 1(dummy0) entered forwarding state
[ 1686.373945] dummy0: left allmulticast mode
[ 1686.373979] dummy0: left promiscuous mode
[ 1686.374051] br0: port 1(dummy0) entered disabled state