[ 1856.849671] br0: port 1(dummy0) entered blocking state
[ 1856.849749] br0: port 1(dummy0) entered disabled state
[ 1856.849817] dummy0: entered allmulticast mode
[ 1856.849900] dummy0: entered promiscuous mode
[ 1856.853254] br0: port 1(dummy0) entered blocking state
[ 1856.853286] br0: port 1(dummy0) entered forwarding state
[ 1857.059054] dummy0: left allmulticast mode
[ 1857.059082] dummy0: left promiscuous mode
[ 1857.059106] br0: port 1(dummy0) entered disabled state