(Draft author hat here, not WG chair)

> On Aug 10, 2019, at 11:36 AM, John Levine <jo...@taugh.com> wrote:
> 
> In article 
> <CAHw9_i+dqqHKkzXdcMi1V1rGKBuM=OFGG-UJJ8nLO=dq17d...@mail.gmail.com> you 
> write:
>> Thank you Paul.
>> 
>> As an incentive to everyone else  -- there is an Easter Egg hidden in
>> this document: if you judiciously choose letters from the text (and
>> reorder them) you can create a very rude word.
> 
> I think that like everyone else I've read it, but I'm not sure what to say.
> 

Well, the document is intended as guidance to the IETF community and to the  
current/future IESG on what it’s reasonable for people to do with reservations 
for special use domain names, particularly in IETF protocols. This is only a 
piece of the larger space around the general idea of the special use names 
registry, but it seemed like a useful place to start.

So it would be helpful to know if you think the recommendations are in fact 
reasonable. 

In particular, there’s a couple of distinctions the draft makes in order to 
carve out what looks (to me, anyway) like a manageable piece of the larger 
issue of administration of domain names as a superset of DNS names: between 
TLDs and names elsewhere in the namespace, and between IETF protocols and other 
possible uses for SUDNs.

First, special use “TLDs” (single label domain names) present a hard case for 
the IETF because of the nexus with another body (ICANN) that has actual 
authority over what DNS names are delegated as TLDs in the public DNS. A 
failure to coordinate in such cases could result in poor outcomes for anyone 
who assumes that the reservation of a special use name under RFC 6761 comes 
with any assurances about the public DNS.

IMO the IETF has three choices here: refuse to reserve single label names as 
special use; agree to reserve such names, at least as a possibility, and assume 
coordination is unnecessary; or ask ICANN, through the established liaison 
relationship, to discuss a process for coordination on reservation of special 
use single label names outside of the public DNS.

No matter which course is chosen, however, a special use name under a TLD 
that’s already in existence and already under the policy control of the IETF 
presents a simpler path to approval with fewer risks, so the draft encourages 
IETF WGs to use such names in their protocols where possible, and the IESG to 
approve them. (This is the “home.arpa” case.)

Second, the other line the draft tries to draw is between IETF protocols, and 
requests for special use name registrations for use in protocols or code bases 
not developed in the IETF. 

This isn’t about excluding anyone else from access to some magical potion, and 
in fact I’d be happy to propose a more detailed set of guidelines for non-IETF 
protocols that it might be reasonable to approve special use names for. (The 
draft suggests “stable specification required,” but I’m not attached to it.) 
The rationale here is that an IETF registry should have clear policy around its 
administration, and this one doesn’t: approval of the next .onion is likely to 
be just as ad hoc as the previous one, because “standards track” has a clear 
meaning inside the IETF, but there’s no equivalent set of guidelines for 
requests not based in IETF process. This doesn’t scale in, for example, the 
case that a sponsor of a closed, non-IETF protocol wants to reserve a set of 
names: is there any limit to how many names the IETF is willing to reserve? 
Should there be a stable reference to their use? Is there any presumption that 
if an existing codebase that uses a reserved name is forked, the new codebase 
should be able to get a new special use name? RFC 6761 is silent on these 
questions, which are implicitly resolved for a protocol that’s on the standards 
track in the IETF, but not for anything else.

If a new organization of the contents would be less baffling, I’m definitely 
open to that, too.



Suzanne


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