DNS64 server takes a AAAA lookup and if there are NOT AAAA records at the name it then performs a A lookup for the same name and maps the results into AAAA records and returns them. There are additional caveats but that is the basic process.
It does NOT take a A lookup and return AAAA record. A lookups get A answers. AAAA lookups get AAAA answers. Mark > On 12 Apr 2018, at 8:51 am, Rick Tillery <rtilleryw...@gmail.com> wrote: > > According to what I've read, that's exactly what DNS64 does. It converts A > records to AAAA records. (For mixed networks, it just passes through AAAA > records, but that's not in my configuration): > > "DNS64 is a mechanism for synthesizing AAAA resource records (RRs) from A > RRs." - https://tools.ietf.org/html/rfc6147 > > "DNS64 describes a DNS server that when asked for a domain's AAAA records, > but only finds A records, synthesizes the AAAA records from the A records." - > https://en.m.wikipedia.org/wiki/IPv6_transition_mechanism > > Rick > > On Apr 11, 2018 5:40 PM, "Chuck Swiger" <cswi...@mac.com> wrote: > On Apr 11, 2018, at 3:32 PM, Rick Tillery <rtilleryw...@gmail.com> wrote: > > I'll give those tools a try, but I don't understand how my client is > > requesting an A record. It only has IPv6 networking. DNS64 should be > > requesting an A record, but that the client should see is the converted > > AAAA record. Is that not right? > > Nope-- DNS requests aren't going to convert an A record to a AAAA record. > > Normally, IPv6 only machines should request IPv6 AAAA records by preference, > and fall back to IPv4 A records only when IPv6 isn't available. However, > your IPv6-only machine will route IPv4 traffic using 6-in-4 or NAT64 > addressing, otherwise you'd get broken connectivity to IPv4-only addresses. > > Regards, > > -- > -Chuck > > > _______________________________________________ > Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe > from this list > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
