[ 1987.315177][T18664] br0: port 1(dummy0) entered blocking state
[ 1987.315357][T18664] br0: port 1(dummy0) entered disabled state
[ 1987.315516][T18664] dummy0: entered allmulticast mode
[ 1987.316455][T18664] dummy0: entered promiscuous mode
[ 1987.346969][T18665] br0: port 1(dummy0) entered blocking state
[ 1987.347213][T18665] br0: port 1(dummy0) entered forwarding state
[ 1989.343798][   T12] dummy0: left allmulticast mode
[ 1989.344639][   T12] dummy0: left promiscuous mode
[ 1989.344879][   T12] br0: port 1(dummy0) entered disabled state