in6_selectsrc
static int in6_selectsrc(uint32_t, struct sockaddr_in6 *,
error = in6_selectsrc(fibnum, dstsock, opts, inp->in6p_moptions,
error = in6_selectsrc(fibnum, &dst_sa, NULL, NULL,
error = in6_selectsrc(fibnum, &dst_sa, NULL, mopts,