Thanks for your comments, Mike!

More details inline.

Cheers,

Oliver

On 12/2/25 8:52 PM, Mike Bishop via Datatracker wrote:
Mike Bishop has entered the following ballot position for
draft-ietf-opsawg-prefix-lengths-08: No Objection

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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

Generally speaking, this document is solid. My one overall feedback would be to
improve the equality of presentation between IPv4 and IPv6, rather than
presenting a primarily-IPv4 mechanism with an aside that IPv6 works the same
way.

## COMMENTS (non-blocking)

### Empty fields

Section 3 says "The first field MUST NOT be empty on lines which are not
comments, while the second and third field can be empty in certain scenarios."
However, the only instance where the second or third field can be empty is
mentioned in Section 3.3, where both are empty.

Please consider clarifying the first statement to indicate that one empty field
is valid only when both are empty, and replace/augment the "in certain
scenarios" with a forward-reference to this one scenario.

(Or if there are other scenarios, describe them.)

The third field can also be empty in the scenario where there is exactly '1' end-site in a prefix. We will clarify that.


### Abstract, Scheme

Considering that "scheme" is a technical term with implications across much of
the IETF, consider choosing an alternate word -- "mechanism", perhaps? Section
1 uses "means", while Section 6 refers to it as "an optional authenticator".
Either of those seem fine.

We'll change this to "mechanism".


### Section 1, IPv4/6 wording

Blocking/throttling: Variable prefix lengths aren't a trait of IPv4. Consider
wording this to reflect that while the lengths will differ between IP versions,
the overarching problem is the same.

We'll emphasize that the difference between IPv4 and IPv6 in this situation is the larger address space.


### Section 4, clarity

The first sentence of Section 4 probably needs its commas adjusted to help
parse the outer sentence correctly; consider parentheses instead:

CURRENT: The original RPSL specifications starting with [RIPE81], [RIPE181],
and a trail of subsequent documents were written by the RIPE community.

CONSIDER: The original RPSL specifications ([RIPE81], [RIPE181], and a trail of
subsequent documents) were written by the RIPE community.

We'll change it to this.


OR PERHAPS: The RIPE community produced the original RPSL specifications:
[RIPE81], [RIPE181], and a trail of subsequent documents.

## NITS (non-blocking)

- Section 4, "can not" => "cannot"

Will fix.





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