[ 2151.394499][T20605] br0: port 1(dummy0) entered blocking state
[ 2151.394802][T20605] br0: port 1(dummy0) entered disabled state
[ 2151.395074][T20605] dummy0: entered allmulticast mode
[ 2151.396073][T20605] dummy0: entered promiscuous mode
[ 2151.426954][T20606] br0: port 1(dummy0) entered blocking state
[ 2151.427726][T20606] br0: port 1(dummy0) entered forwarding state
[ 2153.904898][   T12] dummy0: left allmulticast mode
[ 2153.905313][   T12] dummy0: left promiscuous mode
[ 2153.905655][   T12] br0: port 1(dummy0) entered disabled state