On Thu, Nov 27, 2025 at 1:01 AM Momoka Yamamoto <[email protected]>
wrote:

>
> Hi Marco
> Thank you for your comments.
>
>
> Section 3.2 mentions "Broken IPv6 Connectivity at the Resolver". Why
>> does this paragraph has a focus on IPv6 while dismissing possible IPv4
>> issues?
>
> As this draft is for "DNS IPv6 Transport Operational Guidelines" I think
> we should focus on IPv6.
>

If there is new knowledge to document about IPv4 issues, I would support
including them. I do think our focus is best spent on IPv6 given that's the
protocol that has had a huge growth in experience and deployment since RFC
3901 and therefore needs more attention. What did you have in mind to
include, Marco?


>
>
> With regard to section 4.1 "IPv6 adoption" - I would change the SHOULD
>> into a MUST in: "authoritative DNS servers SHOULD use native IPv6
>> addresses instead of IPv6 addresses synthesized"
>
> I disagree with changing this SHOULD to a MUST.
> If an operator has reasons preventing them from using native IPv6 on
> their authoritative DNS server, but can utilise NAT64, then they should not
> be prevented from doing so.
>

+1, I would prefer this remained a SHOULD without strong evidence that use
of IPv6 synthesized addresses is always harmful in some way.


>
>
>
> I would like to hear more from the list on this draft.
> The current editors copy is at
> https://ietf-wg-dnsop.github.io/draft-ietf-dnsop-3901bis/draft-ietf-dnsop-3901bis.html
>
> Momoka
>
> On Fri, Nov 21, 2025 at 1:55 AM Marco Davids (IETF) <[email protected]>
> wrote:
>
>> I generally support this document, with two concerns:
>>
>> Section 3.2 mentions "Broken IPv6 Connectivity at the Resolver". Why
>> does this paragraph has a focus on IPv6 while dismissing possible IPv4
>> issues?
>>
>> With regard to section 4.1 "IPv6 adoption" - I would change the SHOULD
>> into a MUST in: "authoritative DNS servers SHOULD use native IPv6
>> addresses instead of IPv6 addresses synthesized"
>>
>> --
>> Marco
>>
>>
>> On Thu, 20 Nov 2025 06:11:09 -0800 Peter Thomassen via Datatracker wrote:
>>
>> >
>> > Subject: WG Last Call: draft-ietf-dnsop-3901bis-07 (Ends 2025-12-04)
>> >
>> > This message starts a 2-week WG Last Call for this document.
>>
>> > Please review and indicate your support or objection to proceed with the
>> > publication of this document
>>
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