[ 1691.398402] br0: port 1(dummy0) entered blocking state
[ 1691.398449] br0: port 1(dummy0) entered disabled state
[ 1691.398488] dummy0: entered allmulticast mode
[ 1691.398542] dummy0: entered promiscuous mode
[ 1691.401021] br0: port 1(dummy0) entered blocking state
[ 1691.401088] br0: port 1(dummy0) entered forwarding state
[ 1691.581100] dummy0: left allmulticast mode
[ 1691.581142] dummy0: left promiscuous mode
[ 1691.581181] br0: port 1(dummy0) entered disabled state