Hello Andreas,
> I support adoption.

Thanks!

> > 4.1:
> > Avoiding Fragmentation:
> 
> you mean "Avoiding IP fragmentation"?
> 
> clearance is important, as the draft is also about "Namespace
> Fragmentation"

Good point. Fixed in the editor's copy (and also added 9715 instead of
the draft there).


> some words later:
>        Therefore, IP
>        fragmentation should be avoided by following guidance on
> maximum
>        DNS payload sizes [I-D.ietf-dnsop-avoid-fragmentation] and
>        providing TCP fall-back options [RFC7766].
> 
> ...
> but is RFC7766 say "MUST" for TCP. The wording may be more precise on
> this.

(I regrouped this, as I guess these two belong together)


This wording (BCP14 SHOULD vs. MUST as in RFC7766) follows wording from
RFC3901, which also used SHOULD. I am very much open for MUST here, but
there should probably be a couple more opinions on this.

> this centence is covered by the initial
>     Specifically, this means that the
>     following minimal requirements SHOULD be implemented for a zone:

I do not really follow this point; I read the section a couple of times
now. Do you mean that there should also be a 'MUST' here (then see
above), or that the sentence is redundant?

If the latter, I would technically agree, but would also argue that
text-flow/readability are still improved by its presence.

With best regards,
Tobias

-- 
Dr.-Ing. Tobias Fiebig
T +31 616 80 98 99
M tob...@fiebig.nl

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