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 <lho...@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o "obsolete" means that the definition is obsolete and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
