Re: [netmod] status terms in YANG and IANA registries
Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Mon, 22 July 2019 19:08 UTC
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Date: Mon, 22 Jul 2019 21:08:34 +0200
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
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Subject: Re: [netmod] status terms in YANG and IANA registries
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Lada, it seems the IANA 'deprecated' and 'obsolete' as defined in RFC 8126 section 9.6 both map to YANG's 'obsolete'. /js On Mon, Jul 22, 2019 at 02:49:18PM -0400, Ladislav Lhotka wrote: > Hi, > > I haven't received any responses to my message below but, given the recent > discussion in DNSOP and IETF mailing list, I believe it is important to > address this discrepancy in order not to give ammunition to those who oppose > mirroring IANA registries in YANG modules. > > Lada > > Ladislav Lhotka <lhotka@nic.cz> writes: > > > Hi, > > > > sec. 7.21.2 of RFC 7950 defines the "deprecated" and "obsolete" statuses > > as follows: > > > > o "deprecated" indicates an obsolete definition, but it permits > > new/continued implementation in order to foster interoperability > > with older/existing implementations. > > > > o "obsolete" means that the definition is obsolete and SHOULD NOT > > be implemented and/or can be removed from implementations. > > > > Then, RFC 7224 contains these instructions in the IANA Considerations > > section: > > > > "status": Include only if a registration has been deprecated > > (use the value "deprecated") or obsoleted (use the > > value "obsolete"). > > > > However, RFC 8126 defines the meaning of the status terms in IANA > > registries (sec. 9.6) in the following way: > > > > Specific entries in a registry can be marked as "obsolete" (no > > longer in use) or "deprecated" (use is not recommended). > > > > I would say that "deprecated" means something else here than in YANG. > > For example, the RSA/MD5 algorithm in [1] is marked as "deprecated" > > because it was found weak, and implementing it to "foster > > interoperability" can hardly be recommended. Instead, "SHOULD NOT > > implement" applies here, too. > > > > I think it would be good to either align the semantics of "deprecated" > > in YANG with IANA registries, or at least map both IANA terms to > > "obsolete" in YANG. > > > > Lada > > > > [1] https://www.iana.org/assignments/dns-sec-alg-numbers/dns-sec-alg-numbers.xhtml > > > > -- Ladislav Lhotka Head, CZ.NIC Labs PGP Key ID: 0xB8F92B08A9F76C67 > > > > _______________________________________________ netmod mailing list > > netmod@ietf.org https://www.ietf.org/mailman/listinfo/netmod > > -- > Ladislav Lhotka Head, CZ.NIC Labs PGP Key ID: 0xB8F92B08A9F76C67 > > _______________________________________________ > netmod mailing list > netmod@ietf.org > https://www.ietf.org/mailman/listinfo/netmod -- Juergen Schoenwaelder Jacobs University Bremen gGmbH Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany Fax: +49 421 200 3103 <https://www.jacobs-university.de/>
- [netmod] status terms in YANG and IANA registries Ladislav Lhotka
- Re: [netmod] status terms in YANG and IANA regist… Ladislav Lhotka
- Re: [netmod] status terms in YANG and IANA regist… Juergen Schoenwaelder
- Re: [netmod] status terms in YANG and IANA regist… Ladislav Lhotka