int rc = dns_lookup(dnsa, d, T_NS, fully_qualified_name);
if (rc != DNS_NOMATCH && rc != DNS_NODATA) return rc;
while (*d != 0 && *d != '.') d++;
int rc = dns_lookup(dnsa, d, T_NS, fully_qualified_name);
if (rc != DNS_NOMATCH && rc != DNS_NODATA) return rc;
while (*d != 0 && *d != '.') d++;