Hi Warren,
I find the terminology in this document somewhat self-contradicting and
confusing.
* pseudo-TLD: A label that appears in a fully-qualified domain name
in the position of a TLD, but which is not registered in the
global DNS. This term is not intended to be pejorative.
* TLD: The last visible label in either a fully-qualified domain
name or a name that is qualified relative to the root.
These definitions tell me that a pseudo top-level domain appears in a
fully-qualified domain name in the top-level position. So is a
pseudo-TLD something that appears in a *real* domain name? Or is a
domain name that has a pseudo-TLD a pseudo-domain name? Is foo.alt a
pseudo-domain name, or a *real* domain name with a pseudo-TLD? It’s
not clear.
The draft makes a distinction between 'DNS names' and 'domain names’,
and I understand 'DNS names' to be a subset of 'domain names'. Yet when
I read the definition of 'domain name' in RFC 7719 I don't see this
distinction being made. Is the DNS namespace supposed to be a subset of
the domain namespace? I can't figure it out from the terminology
sections of this draft and RFC 7719.
"The ALT label MAY be used in any domain name as a pseudo-TLD to signify
that this is an alternative (non-DNS) namespace, and should not be
looked up in a DNS context."
* DNS context: The namespace anchored at the globally-unique DNS
root. This is the namespace or context that "normal" DNS uses.
According to the definitions given ‘DNS namespace' and 'DNS context'
are synonyms, and the antonym of 'DNS namespace' is 'alternative
namespace'.
So how about we change the sentence to:
"The ALT label MAY be used in any domain name as a pseudo-TLD to signify
that this is an alternative (non-DNS) namespace, and should not be
looked up in the DNS namespace."
And change the definition to:
* DNS namespace: The namespace anchored at the globally-unique DNS
root. This is the namespace that the DNS protocol uses.
It's easier to understand if we eliminate the word context entirely and
just talk about namespaces.
Thanks,
Andrew
On 21 Jun 2021, at 19:48, [email protected] wrote:
A New Internet-Draft is available from the on-line Internet-Drafts
directories.
This draft is a work item of the Domain Name System Operations WG of
the IETF.
Title : The ALT Special Use Top Level Domain
Authors : Warren Kumari
Andrew Sullivan
Filename : draft-ietf-dnsop-alt-tld-13.txt
Pages : 11
Date : 2021-06-21
Abstract:
This document reserves a string (ALT) to be used as a TLD label in
non-DNS contexts. It also provides advice and guidance to
developers
developing alternative namespaces.
[Ed note: Text inside square brackets ([]) is additional background
information, answers to frequently asked questions, general
musings,
etc. They will be removed before publication. This document is
being collaborated on in Github at:
https://github.com/wkumari/draft-
wkumari-dnsop-alt-tld. The most recent version of the document,
open
issues, etc should all be available here. The authors (gratefully)
accept pull requests. ]
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-dnsop-alt-tld/
There is also an htmlized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-dnsop-alt-tld-13
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-dnsop-alt-tld-13
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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