neg_closest_zone_parent
zone = neg_closest_zone_parent(neg_cache, qname, qname_len, labs,
zone = neg_closest_zone_parent(neg, zname, zname_len, zname_labs,
parent = neg_closest_zone_parent(neg, nm, nm_len, labs, dclass);
zone = neg_closest_zone_parent(neg_cache, qname, qname_len, labs,
zone = neg_closest_zone_parent(neg, zname, zname_len, zname_labs,
parent = neg_closest_zone_parent(neg, nm, nm_len, labs, dclass);