[ 2013.107881][T12661] br0: port 1(dummy0) entered blocking state
[ 2013.108078][T12661] br0: port 1(dummy0) entered disabled state
[ 2013.108240][T12661] dummy0: entered allmulticast mode
[ 2013.109508][T12661] dummy0: entered promiscuous mode
[ 2013.132359][T12662] br0: port 1(dummy0) entered blocking state
[ 2013.132644][T12662] br0: port 1(dummy0) entered forwarding state
[ 2015.127326][   T12] dummy0: left allmulticast mode
[ 2015.128007][   T12] dummy0: left promiscuous mode
[ 2015.128222][   T12] br0: port 1(dummy0) entered disabled state