dns_rdatatype_aaaa
rdataset->type == dns_rdatatype_aaaa ||
lookup->rdtype = dns_rdatatype_aaaa;
case dns_rdatatype_aaaa:
REQUIRE(rdata->type == dns_rdatatype_aaaa);
REQUIRE(type == dns_rdatatype_aaaa);
REQUIRE(rdata->type == dns_rdatatype_aaaa);