Hello Yannis,
Lately we've been trying to lay out a future-proof IPv6 addressing plan (actually, to revise our initial IPv6 plan from a few years back) and we came to the conclusion that if we were to plan ahead for a few years, we would need an extra IPv6 allocation from RIPE, one more /32 (we already have one). Well, according to ripe-512 we're not eligible for a subsequent allocation yet, since we haven't met the subsequent allocation criteria (HD ratio).
We'll be offering our commercial dual stack services (broadband, leased-lines VPNs) next year. This means that we'll have 1,2M potential subscribers (/56) just for the retail service. And then there's all the /48s for the VPNs and bigger customers. I'm not saying that all of our customers will migrate to IPv6 at once but we have to plan, don't we? And then there's the growth factor to be considered also...
For us, this extra /32 will make the difference between an efficient and future-proof addressing plan that will last for many years and one that will have to be revised after 2-3 years (with all the readdressing etc). I thought that one of the key advantages with IPv6 was the fact that we would get rid of readdressing. What I'm trying to say is that ripe-512 is not flexible enough. In the end, should we planning ahead for many years (as per RFC6177) or not?
I am adding the address policy working group. Any changes to address policy / ripe-512 should (also) be discussed there. Thank you, Sander Steffann APWG co-chair