floodlight/ivs — pull request #114 by rlane (2014-03-02 20:37:09+00:00)
Title: support OFPPC_PORT_DOWN

Reviewer: @harshsin

See "man 7 netdevice". OFPPC_PORT_DOWN is synchronized with !IFF_UP, and
OFPPS_LINK_DOWN is !IFF_RUNNING.