Hi, On Thu, Feb 27, 2025 at 12:14:52PM +0100, Angela Dall'Ara wrote:
RIPE policy proposal 2024-02, "IPv6 Initial Allocations /28 " is now available for discussion again.??????
This proposal aims to change the initial IPv6 allocation size from /29 to /28.
I still see no compelling need for this change, as I do not think the obsession with nibbles is justified - network admins will have to deal with odd bit sizes anyway, so pretending we can hide this by making the default allocation a /28 is, well, not convincing me. That said, I *do* support the proposal, just to spite ARIN with their silly "we restrict ISPs to a /36 unless they pay more for a /32" policy. IPv6 policy is about enabling IPv6 deployment, and not about introducing artificial shortage - and the numbers are pretty clear that giving a /28 to every RIPE NCC member ("a few ten thousands") is not putting undue pressure on the v6 address space at large. That said, it's reasonable to have safeguards to prevent stockpiling based on perceived benefits of having multiple prefixes, all extended to /28s. It's been mentioned that we seem to be at this point again and again (/35 to /32, /32 to /29, now /29 to /28), always argueing "another bit won't harm" and that being a slippery slope - so, yes, whenever we come here again and discuss "shouldn't we increase this to /27? or maybe /24?" we need to stare hard at the numbers, and also at the reasoning why ISPs would need larger blocks. OTOH, we've been at this for some 25 years now, so we do have a better understanding on block sizes, number of LIRs, global dynamics, etc. (We as a LIR won't benefit from this proposal, though... our /35 came from a /29 reservation, so we can only ever grow this to a /28 if we manage to convince the other LIR in that /28 to transfer their half to us, which they are not very likely to do :-) - we don't need the space anyway, we're happy with the /32 we now have, and have never needed to extend it to a /29) Gert Doering -- IPv6 old fart -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard, Ingo Lalla, Karin Schuler, Sebastian Cler Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (0)89/32356-444 USt-IdNr.: DE813185279