[ 1966.594340][T20009] br0: port 1(dummy0) entered blocking state
[ 1966.594585][T20009] br0: port 1(dummy0) entered disabled state
[ 1966.595276][T20009] dummy0: entered allmulticast mode
[ 1966.596288][T20009] dummy0: entered promiscuous mode
[ 1966.619684][T20010] br0: port 1(dummy0) entered blocking state
[ 1966.619916][T20010] br0: port 1(dummy0) entered forwarding state
[ 1968.584219][   T12] dummy0: left allmulticast mode
[ 1968.585204][   T12] dummy0: left promiscuous mode
[ 1968.585430][   T12] br0: port 1(dummy0) entered disabled state