[arin-ppml] Draft Policy ARIN-2015-10: Minimum IPv6 Assignments

[ARIN]

Draft Policy ARIN-2015-10
Minimum IPv6 Assignments

On 17 September 2015 the ARIN Advisory Council (AC) accepted 
"ARIN-prop-224 Minimum IPv6 Assignments" as a Draft Policy.

Draft Policy ARIN-2015-10 is below and can be found at:
https://www.arin.net/policy/proposals/2015_10.html

You are encouraged to discuss the merits and your concerns of Draft
Policy 2015-10 on the Public Policy Mailing List.

The AC will evaluate the discussion in order to assess the conformance
of this draft policy with ARIN's Principles of Internet Number Resource
Policy as stated in the PDP. Specifically, these principles are:

    * Enabling Fair and Impartial Number Resource Administration
    * Technically Sound
    * Supported by the Community

The ARIN Policy Development Process (PDP) can be found at:
https://www.arin.net/policy/pdp.html

Draft Policies and Proposals under discussion can be found at:
https://www.arin.net/policy/proposals/index.html

Regards,

Communications and Member Services
American Registry for Internet Numbers (ARIN)


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Draft Policy ARIN-2015-10
Minimum IPv6 Assignments

Date: 23 September 2015

Problem Statement:

ISPs may believe that they have an incentive to obtain smaller blocks 
than they really need, and once they receive their allocation may 
subsequently issue blocks smaller than their customers may need in the 
future. This policy seeks to encourage the correct behavior by 
reiterating the smallest reasonable sub-allocation size and by 
discounting any space which has been subdivided more finely from any 
future utilization analysis.

Policy statement:

Modify section 2.15 from "When applied to IPv6 policies, the term 
"provider assignment unit" shall mean the prefix of the smallest block a 
given ISP assigns to end sites (recommended /48)." to "When applied to 
IPv6 policies, the term "provider assignment unit" shall mean the prefix 
of the smallest block a given ISP assigns to end sites. A /48 is 
recommended as this smallest block size. In no case shall a provider 
assignment unit for the purpose of this policy be smaller than /56."

Modify section 2.16.1 from "A provider assignment unit shall be 
considered fully utilized when it is assigned to an end-site" to "A 
provider assignment unit shall be considered fully utilized when it is 
assigned in full (or as part of a larger aggregate) to a single 
end-site. If a provider assignment unit (which shall be no smaller than 
/56) is split and assigned to multiple end-sites that entire provider 
assignment unit shall be considered NOT utilized."

Comments:
Timetable for implementation: IMMEDIATE