[ 1962.763318][T13939] br0: port 1(dummy0) entered blocking state
[ 1962.763716][T13939] br0: port 1(dummy0) entered disabled state
[ 1962.763879][T13939] dummy0: entered allmulticast mode
[ 1962.764833][T13939] dummy0: entered promiscuous mode
[ 1962.794561][T13940] br0: port 1(dummy0) entered blocking state
[ 1962.794837][T13940] br0: port 1(dummy0) entered forwarding state
[ 1964.717679][   T12] dummy0: left allmulticast mode
[ 1964.718428][   T12] dummy0: left promiscuous mode
[ 1964.718674][   T12] br0: port 1(dummy0) entered disabled state