Hi Guy,

Let me try to clarify with a text suggestion:

CURRENT:
Within those file formats each packet that is captured is indicated by a
LinkType value. The LinkType value selects one of many hundred formats for
metadata and Layer 2 encapsulation of the packet.

SUGGEST:
Within those file formats each packet that is captured is indicated by a
LinkType value. The LinkType value selects one of many hundred formats for
metadata and Layer 2 encapsulation of the packet. [I-D.ietf-opsawg-pcap
<https://www.ietf.org/archive/id/draft-ietf-opsawg-pcaplinktype-12.html#I-D.ietf-opsawg-pcap>]
describes the format and the encoding of LinkType. The use of LinkType in
other encoding schemes for other tools is not precluded by this document.

Then move [I-D.ietf-opsawg-pcap
<https://www.ietf.org/archive/id/draft-ietf-opsawg-pcaplinktype-12.html#I-D.ietf-opsawg-pcap>
] to normative references.

Thanks,
Ketan


On Thu, Oct 16, 2025 at 11:31 AM Guy Harris <[email protected]> wrote:

> On Oct 15, 2025, at 10:38 PM, Ketan Talaulikar <[email protected]>
> wrote:
>
> KT2> I think I am beginning to understand this better now. Thanks for your
> explanation. All I am looking for is some normative reference for this code
> point (preferably in an IETF consensus document).
>
>
> At least according to the "Code point" Wikipedia article at
> https://en.wikipedia.org/wiki/Code_point, a "code point ... is a
> particular position in a table, where the position has been assigned a
> meaning".
>
> So, if we're referring to LinkType values, there isn't a single code point
> here, there is a set of code points, i.e. a set of LinkType values.
>
> If by "some normative reference" you mean a reference that specifies, for
> each of those code points, the format of packets for that code point, 
> draft-ietf-opsawg-pcaplinktype
> is the draft for that reference; the details of each of those formats is
> given by the references for each of those code points.
>
> Neither the pcap nor pcapng drafts are references for the LinkType code
> points. They are references for file formats that contain fields that use
> those code point values.There *is* no other reference for the
> code-point-to-format mapping to which draft-ietf-opsawg-pcaplinktype can
> refer - draft-ietf-opsawg-pcaplinktype *is* the reference for that
> mapping.
>
> Others are free to use/leverage the same.
>
>
> Yes, formats other than pcap and pcapng that use LinkType values, and
> network protocols using LinkType values, can also refer to the registry
> created based on draft-ietf-opsawg-pcaplinktype.
>
> I will wait for an updated document or text proposal.
>
>
> What updates are required here?
>
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