James,

Comments in-line...

On Mon, Jun 27, 2022 at 12:36 PM Gould, James
<[email protected]> wrote:
>
>
> The question is how we handle versioning, which is an aspect not covered in 
> the existing RFCs.  The only version reference is in the RDAP Conformance 
> definition in section 4.1 of RFC 9083 with "rdap_level_0" and 
> "lunarNIC_level_0".  If the use of "lunarNIC_level_0" was a mistake, then 
> versioning is completely absent for extensions.

In my opinion, this is not accurate. The identifier is the version. If
I understand your position correctly, you believe that the identifier
should contain a separate, embedded, syntactically-parsable version
identifier. And that is not an unreasonable position. However, what
are the benefits of having it? And what are the complications of
having it? If this sub-identifer were also an opaque identifier, then
I don't see much benefit. If it were to have semantics, then what are
those semantics?

>
> Approach A is a showstopper to me since it cascades versioning to all 
> elements with no perceived value and with the cost of interoperability issues 
> when the version number does change.

What do you mean by "all elements" here? Can you provide an example?

-andy

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