[ 1674.478673] br0: port 1(dummy0) entered blocking state
[ 1674.478718] br0: port 1(dummy0) entered disabled state
[ 1674.478754] dummy0: entered allmulticast mode
[ 1674.478805] dummy0: entered promiscuous mode
[ 1674.481596] br0: port 1(dummy0) entered blocking state
[ 1674.481626] br0: port 1(dummy0) entered forwarding state
[ 1674.678774] dummy0: left allmulticast mode
[ 1674.678814] dummy0: left promiscuous mode
[ 1674.678848] br0: port 1(dummy0) entered disabled state