I’ve always wondered, since an RFC is a request for comment, how does one leave a comment? And who?

A bit of lore that I learned in my networking class in college was that the RFC name was chosen as tongue in cheek in that by the time a proposal gets to the RFC stage, comments are very much not appreciated. You're supposed to comment well before that point.

No idea if that bit of lore is true but it is certainly the case that RFCs are usually the final word on the relevant standard. In fact, once they get their ID, RFCs cannot be modified or rescinded; only superseded by another RFC.

> The early RFCs were, in fact, requests for comments on ideas and proposals; the goal was to start conversations rather than to create an archival record of a standard or best practice. This goal changed over time, as the formality of the publication process evolved and the community consuming the material grew. Today, over 8500 RFCs have been published, ranging across best practice guidance, experimental protocols, informational material, and, of course, Internet standards.

> https://www.rfc-editor.org/rfc/rfc8700.html

Nowadays you're supposed to comment before it gets to "Internet standard"

RFC's operate under the IETF. RFC's are developed under some specific group, and you can join that group, the business is generally conducted on email. There are (well, were back when I participated) in-person meetings, but attendance there was not mandatory.

You can submit errata. Maybe it should be renamed to RFE.

"request for compliance" is the alternative interpretation.