[ 1876.909091] br0: port 1(dummy0) entered blocking state
[ 1876.909129] br0: port 1(dummy0) entered disabled state
[ 1876.909166] dummy0: entered allmulticast mode
[ 1876.909214] dummy0: entered promiscuous mode
[ 1876.911949] br0: port 1(dummy0) entered blocking state
[ 1876.911982] br0: port 1(dummy0) entered forwarding state
[ 1877.091445] dummy0: left allmulticast mode
[ 1877.091483] dummy0: left promiscuous mode
[ 1877.091513] br0: port 1(dummy0) entered disabled state