Re: [Edm] On Section 3.2. At what level should versioning occur?

[Erik Auerswald <[e-mail]>]

Hello Eliot,

On Thu, Aug 05, 2021 at 11:00:57AM +0200, Eliot Lear wrote:
> [...]
> I really like your section 3.2, but it does presume that the lower
> layers are able to accommodate exposing of version information. 
> Below the IP layer, when IEEE 802 is used, we are in very good
> shape; but does everything below that hourglass neck have that
> attribute, and do we want to demand that in order to implement
> v4/v6?  To that end, my suggestion is that you simply note this as
> an issue when we interact with other technologies.

I do not think this I-D section argues against using version information
for a protocol, but rather that increasing the version number is not
sufficient for implementing and deploying a new version of a protocol
at a later time.

> [...]
> Interestingly, when we do port allocations, we generally say that
> applicants SHOULD include versioning information in their protocols

I think that is good advice, since IMHO versioning information is a
necessary prerequisite for later on introducing another version.

> [...]

Thanks,
Erik