>> 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,
I think he was saying this. If his machine is truly IPv6-only, then the resolver would only perform AAAA lookups (I can't speak to what nslookup would do). That AAAA lookup gets forwarded to the DNS64 box, which performs the A lookup (and finds no AAAA), and then returns the synthesized AAAA record. > and fall back to IPv4 A records only when IPv6 isn't available. As far as I know, a host with on an IPv6 address is only ever going to perform AAAA lookups. I'd be very interested to know if there are cases where that isn't true. > 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. Not that I'm saying anything you don't know, but that's the purpose of DNS64 - to make sure you can reach IPv4 only resources. But if your IPv6-only host is trying to reach an IPv4 literal (e.g. embedded in a web page), then unless you have a 464 CLAT available, you're out of luck. best, mark _______________________________________________ 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
