[ 1616.219402] br0: port 1(dummy0) entered blocking state
[ 1616.219446] br0: port 1(dummy0) entered disabled state
[ 1616.219482] dummy0: entered allmulticast mode
[ 1616.219531] dummy0: entered promiscuous mode
[ 1616.222362] br0: port 1(dummy0) entered blocking state
[ 1616.222396] br0: port 1(dummy0) entered forwarding state
[ 1616.406026] dummy0: left allmulticast mode
[ 1616.406053] dummy0: left promiscuous mode
[ 1616.406083] br0: port 1(dummy0) entered disabled state