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Re: [BEHAVE] [DNSOP] [v6ops] New Version Notification for draft-momoka-v6ops-ipv6-only-resolver-00.txt

Joe Abley <jabley@hopcount.ca> Sat, 08 October 2022 20:31 UTC

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From: Joe Abley <jabley@hopcount.ca>
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Date: Sat, 08 Oct 2022 16:31:01 -0400
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Cc: Mark Andrews <marka@isc.org>, dnsop <dnsop@ietf.org>, 6man list <ipv6@ietf.org>, behave@ietf.org, v6ops@ietf.org
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To: Momoka Yamamoto <momoka.my6@gmail.com>
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Subject: Re: [BEHAVE] [DNSOP] [v6ops] New Version Notification for draft-momoka-v6ops-ipv6-only-resolver-00.txt
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Hi there,

On Oct 8, 2022, at 13:58, Momoka Yamamoto <momoka.my6@gmail.com> wrote:

> re: Mark Andrews 's comments
> > this is yet another example of why DNS64 should be made historic.
> > This is requesting even more support to work around problems introduced by DN64, a poorly thought out, supposedly short term hack.
> 
> We did not write this draft thinking DNS64 has a problem.
> We thought that IPv6-only iterative resolvers not existing because of IPv4-only authoritative servers is a problem, and wanted a way to solve it from the resolver side and not only from the network side (e.g. using 464XLAT).

A host connected to a v6 network that has access to v4 networks via translation mechanisms is a dual-stack host for the purposes of initiating queries and receiving responses. It is not a v6-only resolver in a practical sense.

Another example of such a host might be one which has v4 connectivity, and which has v6 connectivity through a tunnel. That host is also dual-stack.

Your document seems to say, in essence, "your resolver should be dual-stack if it needs to be able to send queries over both v4 and v6". But this is unsurprising news, since it's basically the definition of "dual-stack".

Perhaps I am missing something?


Joe

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