RTF_DONE
rtm->rtm_flags = RTF_DONE | flags;
rtm->rtm_flags = RTF_DONE | flags;
rtm->rtm_flags = RTF_DONE | rt->rt_flags;
rtm->rtm_flags &= ~(RTF_DONE|RTF_CLONED|RTF_CACHED);
rtm->rtm_flags |= RTF_DONE;
if (rtm->rtm_errno || !(rtm->rtm_flags & RTF_DONE))
RTFLAG("d", RTF_DONE);