[ 1999.411511][T19616] br0: port 1(dummy0) entered blocking state
[ 1999.412203][T19616] br0: port 1(dummy0) entered disabled state
[ 1999.412414][T19616] dummy0: entered allmulticast mode
[ 1999.413350][T19616] dummy0: entered promiscuous mode
[ 1999.446855][T19617] br0: port 1(dummy0) entered blocking state
[ 1999.447025][T19617] br0: port 1(dummy0) entered forwarding state
[ 2001.378147][   T71] dummy0: left allmulticast mode
[ 2001.378330][   T71] dummy0: left promiscuous mode
[ 2001.378549][   T71] br0: port 1(dummy0) entered disabled state