Dear Matt, many thanks for the policy proposal implementation and for your e-mail. I have one or two questions regarding the example in the information about the expanded evaluation criteria (link below). I realise that you were just providing an example and all examples have their limitations. I hope however that your answer might help me and possibly others to better understand the new policy. The questions are: a) if you have 8 cities each requiring a /48 then you need a /45 and not a /44 as in your example. Is the extra bit already included in the /44? This is not clear because you imply it but do not state it explicitly. The same applies to the Region and Country structuring. Can you clarify? b) Why stop at 3 levels of hierarchy? For example a city may be divided into suburban regions. Maybe there are also 8 suburban regions per city. If this would be the case would it be possible to have one more extra bit - finally resulting in a /35 instead of a /36 as in your example? And countries may be structured into continental regions - let's assume we have 8 of these too. Here we need one extra bit too, finally resulting in a /34. Generally the question is: is there some limit on the number of levels of hierarchy for which an "extra bit" may be used? Many thanks and kind regards, John -----Original Message----- From: address-policy-wg [mailto:address-policy-wg-bounces@ripe.net] On Behalf Of Matt Parker Sent: Mittwoch, 7. Oktober 2015 12:20 To: address-policy-wg@ripe.net Subject: [address-policy-wg] Policy Proposal Implemented: 2015-03, "Assessment Criteria for IPv6 Initial Allocation Size" Dear colleagues, We are pleased to announce that we have implemented policy proposal 2015-03, "Assessment Criteria for IPv6 Initial Allocation Size". In accordance with the new policy, the criteria used to evaluate the size of an initial IPv6 allocations has been expanded to include: - Hierarchical and geographical structuring of the organisation - Planned longevity of the allocation - Segmentation of infrastructure for security You can find more information about the expanded evaluation criteria here: https://www.ripe.net/manage-ips-and-asns/ipv6/request-ipv6/assessment-criter... The archived policy proposal can be found here: https://www.ripe.net/participate/policies/proposals/2015-03 The RIPE Document, "IPv6 Address Allocation and Assignment Policy", is available here: https://www.ripe.net/publications/docs/ripe-655 Kind regards, Matt Parker RIPE NCC Registration Services