[ 1648.645864] br0: port 1(dummy0) entered blocking state
[ 1648.645900] br0: port 1(dummy0) entered disabled state
[ 1648.645932] dummy0: entered allmulticast mode
[ 1648.645980] dummy0: entered promiscuous mode
[ 1648.648916] br0: port 1(dummy0) entered blocking state
[ 1648.648979] br0: port 1(dummy0) entered forwarding state
[ 1648.835254] dummy0: left allmulticast mode
[ 1648.835288] dummy0: left promiscuous mode
[ 1648.835320] br0: port 1(dummy0) entered disabled state