FlowForwarding/LINC-Switch — pull request #255 by legoscia (2013-12-02 17:14:49+00:00)
Title: Fix error message for port_mod to non-existent port

Return OFPET_PORT_MOD_FAILED + OFPPMFC_BAD_PORT instead of
OFPET_BAD_REQUEST + OFPBRC_BAD_PORT.

This closes FlowForwarding/LINC-Switch#238.