Re: [link-relations] NEW APP DATA

Julian Reschke <> Thu, 15 July 2010 08:14 UTC

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Date: Thu, 15 Jul 2010 10:14:04 +0200
From: Julian Reschke <>
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Subject: Re: [link-relations] NEW APP DATA
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On 15.07.2010 09:54, Ian Hickson wrote:
> ...
> The registration process doesn't mention a specification requirement, so
> I'm not sure exactly what to provide here.
> ...


    Application data is registered on the advice of a Designated Expert
    (appointed by the IESG or their delegate), with a Specification
    Required (using terminology from [RFC5226]).


       Specification Required - Values and their meanings must be
             documented in a permanent and readily available public
             specification, in sufficient detail so that interoperability
             between independent implementations is possible.  When used,
             Specification Required also implies use of a Designated
             Expert, who will review the public specification and
             evaluate whether it is sufficiently clear to allow
             interoperable implementations.  The intention behind
             "permanent and readily available" is that a document can
             reasonably be expected to be findable and retrievable long
             after IANA assignment of the requested value.  Publication
             of an RFC is an ideal means of achieving this requirement,
             but Specification Required is intended to also cover the
             case of a document published outside of the RFC path.  For
             RFC publication, the normal RFC review process is expected
             to provide the necessary review for interoperability, though
             the Designated Expert may be a particularly well-qualified
             person to perform such a review.

             Examples: Diffserv-aware TE Bandwidth Constraints Model
             Identifiers [RFC4124], TLS ClientCertificateType Identifiers
             [RFC4346], ROHC Profile Identifiers [RFC4995].