[address-policy-wg] 2023-01 - New Version Policy Proposal (Reducing IXP IPv4 assignment default size to a /26)

Hi Nick,

> I can't work out what the proposed new section 7 is saying.

This paragraph only has an editorial change, it is already present in the current policy. It covers the time threshold for returning space: after 180 days of disuse or from a new assignment received as per points 4 and 5.

> there are a bunch of problematic edge cases associated with section 5. E.g. what happens if an IXP has a /23 and has 254 IP addresses used after 1Y? They will be obliged to downgrade to a /24, according to the current text.  Also I don't know what a special circumstance is.

> The problems in section 5 can be fixed easily, but it depends on how the authors want to handle assignment upgrades / renumberings. I'd suggest either dropping the 1Y utilisation requirement to e.g. 40%, or else that if you reach e.g. 80% current usage, you qualify to receive an assignment of 2x the current, up to /22.  Those figures are plucked out of the air btw. The point with them is that they are not 50%, which is obviously a magic number when the natural increase of assignment size would be to double the size of the block.

The goal of this part is to minimize renumberings while avoiding greedy requests. Dropping the one year requirement to 40% is reasonable if you think 50% is too harsh ("magic numbers"). We can incorporate this change.

Regarding the "special circumstances": this was already present in the current policy. I guess it is intended to give RIPE a little leeway to react to unforeseen circumstances.

Kind regards,
Matthias


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________________________________________
Von: address-policy-wg <address-policy-wg-bounces at ripe.net> im Auftrag von Nick Hilliard <nick at foobar.org>
Gesendet: Mittwoch, 26. April 2023 16:59:59
An: Angela Dall'Ara
Cc: address-policy-wg at ripe.net
Betreff: Re: [address-policy-wg] 2023-01 - New Version Policy Proposal (Reducing IXP IPv4 assignment default size to a /26)

Angela Dall'Ara wrote on 06/03/2023 10:43:
As per the RIPE Policy Development Process (PDP), the purpose of this four-week Discussion Phase is to discuss the proposal and provide feedback to the proposer.

two issues:

- I can't work out what the proposed new section 7 is saying.
- there are a bunch of problematic edge cases associated with section 5. E.g. what happens if an IXP has a /23 and has 254 IP addresses used after 1Y? They will be obliged to downgrade to a /24, according to the current text.  Also I don't know what a special circumstance is.

The problems in section 5 can be fixed easily, but it depends on how the authors want to handle assignment upgrades / renumberings. I'd suggest either dropping the 1Y utilisation requirement to e.g. 40%, or else that if you reach e.g. 80% current usage, you qualify to receive an assignment of 2x the current, up to /22.  Those figures are plucked out of the air btw. The point with them is that they are not 50%, which is obviously a magic number when the natural increase of assignment size would be to double the size of the block.

Nick