neg_closest_data
(void)neg_closest_data(zone, qname, qname_len, labs, &data);
(void)neg_closest_data(zone, b32, b32len, zone->labs+1, &data);
(void)neg_closest_data(zone, qname, qname_len, labs, &data);
(void)neg_closest_data(zone, b32, b32len, zone->labs+1, &data);