[ 1941.512147] br0: port 1(dummy0) entered blocking state
[ 1941.512205] br0: port 1(dummy0) entered disabled state
[ 1941.512267] dummy0: entered allmulticast mode
[ 1941.512335] dummy0: entered promiscuous mode
[ 1941.515967] br0: port 1(dummy0) entered blocking state
[ 1941.516028] br0: port 1(dummy0) entered forwarding state
[ 1941.775275] dummy0: left allmulticast mode
[ 1941.775301] dummy0: left promiscuous mode
[ 1941.775323] br0: port 1(dummy0) entered disabled state