Re: [DNSOP] Second Working Group Last Call for draft-ietf-dnsop-extended-error

Petr Špaček <petr.spacek@nic.cz> Fri, 25 October 2019 13:48 UTC

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To: Warren Kumari <warren@kumari.net>, Tony Finch <dot@dotat.at>
Cc: Tim Wicinski <tjw.ietf@gmail.com>, dnsop <dnsop@ietf.org>, Wes Hardaker <wjhns1@hardakers.net>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/xERVjKaThvmIP54hb9kCbnwO2S4>
Subject: Re: [DNSOP] Second Working Group Last Call for draft-ietf-dnsop-extended-error
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On 24. 10. 19 19:56, Warren Kumari wrote:
> On Tue, Oct 22, 2019 at 6:49 AM Tony Finch <dot@dotat.at> wrote:
>>
>> Petr Špaček <petr.spacek@nic.cz> wrote:
>>>
>>> 2. Second problem is that it is uncelar if there is going to be a
>>> consumer: Did *anyone* from stub resolvers said a word about this draft?
>>> Is it useful as it is?
>>
>> I expect almost no-one can do anything with EDE without
>> getaddrinfo() EAI_ return code extensions.
>>
> 
> I would personally find this to useful if only dig (or drill or delve
> or...) supported this -- it's currently hard to actually debug weird
> DNS failures, and simply providing information to a human using
> diagnostic tools would be helpful.
> This and the "DNSSEC bogus -> ask another resolver" are to my mind the
> primary uses...

In my personal experience most of "hard to debug errors" involve forwarding (because lack of visibility into forwarding chain), so I do not see extended-errors being super useful in its current form.

As a result, from my perspective exposing EDE information only in dig (and other tools for geeks) *does not* justify the investment needed on resolver side.

On the other hand, *if the information is exposed to end-users* in a form which actually helps to direct complains from users to appropriate places, then the cost/benefit situation is completely different and I'm all for it!

-- 
Petr Špaček  @  CZ.NIC