[ 1673.326849] br0: port 1(dummy0) entered blocking state
[ 1673.326891] br0: port 1(dummy0) entered disabled state
[ 1673.326931] dummy0: entered allmulticast mode
[ 1673.326985] dummy0: entered promiscuous mode
[ 1673.329442] br0: port 1(dummy0) entered blocking state
[ 1673.329480] br0: port 1(dummy0) entered forwarding state
[ 1673.508944] dummy0: left allmulticast mode
[ 1673.508976] dummy0: left promiscuous mode
[ 1673.509007] br0: port 1(dummy0) entered disabled state