[ 1648.045345] br0: port 1(dummy0) entered blocking state
[ 1648.045385] br0: port 1(dummy0) entered disabled state
[ 1648.045418] dummy0: entered allmulticast mode
[ 1648.045469] dummy0: entered promiscuous mode
[ 1648.048568] br0: port 1(dummy0) entered blocking state
[ 1648.048598] br0: port 1(dummy0) entered forwarding state
[ 1648.255058] dummy0: left allmulticast mode
[ 1648.255101] dummy0: left promiscuous mode
[ 1648.255129] br0: port 1(dummy0) entered disabled state