[arin-ppml] Recommended Draft Policy ARIN-2019-3: Update 4.10 – IPv6 Deployment Block

Fernando Frediani fhfrediani at gmail.com
Tue Aug 20 15:34:54 EDT 2019

I would like to support this proposal in full, but before just want to 
clarify two points:

- If I understand correctly an organization may receive multiple /24's 
(or a combination of other sizes) for this propose up to a maximum of a 
/21 and not a /21 every six months.

- Any blocks received under this policy and later transferred or merged 
to or by other organizations must be keep used and justified for its 
original propose of IPv6 Deployment ? The proposal text is unclear about 
transfers so wanted to clarify if in that scenario it remains the same.

Best Regards

On 20/08/2019 15:56, ARIN wrote:
> On 15 August 2019, the ARIN Advisory Council (AC) advanced the 
> following Draft Policy to Recommended Draft Policy status:
> * ARIN-2019-3: Update 4.10 – IPv6 Deployment Block
> The text of the Recommended Draft Policy is below, and may also be 
> found at:
> https://www.arin.net/participate/policy/drafts/2019_3/
> You are encouraged to discuss all Recommended Draft Policies on PPML 
> prior to their presentation at the next ARIN Public Policy 
> Consultation (PPC). PPML and PPC discussions are invaluable to the AC 
> when determining community consensus.
> The PDP can be found at:
> https://www.arin.net/participate/policy/pdp/
> Draft Policies and Proposals under discussion can be found at:
> https://www.arin.net/participate/policy/drafts/
> Regards,
> Sean Hopkins
> Policy Analyst
> American Registry for Internet Numbers
> Recommended Draft Policy ARIN-2019-3: Update 4.10 – IPv6 Deployment Block
> AC Assessment of Conformance with the Principles of Internet Number 
> Resource Policy:
> Because it will better enable fair number distribution, provide 
> improved clarity and compatibility with existing systems, is 
> technically sound, has received the support of the community, and 
> there are no material legal issues related to implementation, the ARIN 
> Advisory Council moved draft policy 2019-3 to recommended draft status.
> Problem Statement:
> ARIN staff has noted that the current 4.10 policy is causing problems 
> in its implementation.
> The current policy specifies a /28 minimum. However, ARIN can only 
> allocated a /24 as its minimum size. ARIN’s current tools only support 
> a minimum of /24 for reverse DNS.
> The current RPKI landscape is also an impediment to using smaller 
> block sizes. Furthermore, a /28 practically is unroutable, so an 
> organization if they were to receive a /28 would be unable to 
> functionally interoperate with most IPv4 end points, for applications 
> which were noted examples in the original policy. (At the time of 
> writing the original policy, it was hoped that by creating a policy 
> with a smaller block size other RIRs and network operators would 
> embrace the routing of blocks smaller than a /24.)
> Updating ARINs tools to allow smaller than a /24 for reverse DNS (such 
> as RFC2317) would likely be a large cost compared value received by 
> the community. This value is further diminished because the purpose of 
> an IPv4 block to facilitate IPv6 deployment is that it be routable to 
> the rest of the IPv4 Internet.
> This policy attempts to address these issues, by raising the minimum 
> size to a /24 and limits total amount an organization can receive to a 
> /21. It also removes the requirement for return and renumber, since 
> that was primarily added to allow organizations to obtain larger 
> blocks if that was necessary. The policy also clarifies the 
> utilization requirements by placing them directly in this section 
> rather than a reference to the utilization requirements of end users.
> Policy Statement:
> Replace current 4.10 with the following updated section
> 4.10 Dedicated IPv4 block to facilitate IPv6 Deployment
> ARIN shall allocate a contiguous /10 from its last /8 IPv4 allocation 
> from IANA. This IPv4 block will be set aside and dedicated to 
> facilitate IPv6 deployment. Allocations and assignments from this 
> block must be justified by immediate IPv6 deployment requirements. 
> Examples of such needs include: IPv4 addresses for key dual stack DNS 
> servers, and NAT-PT or NAT464 translators. ARIN staff will use their 
> discretion when evaluating justifications.
> This block will be subject to a minimum and maximum size allocation of 
> /24. ARIN should use sparse allocation when possible within that /10 
> block.
> In order to receive an allocation or assignment under this policy:
> - the applicant may not have received resources under this policy in 
> the preceding six months and cannot receive more than a /21 under this 
> policy section;
> - previous allocations/assignments under this policy must continue to 
> meet the justification requirements of this policy;
> - previous allocations/assignments under this policy must be utilized 
> to at least 80% to obtain an additional allocation or assignment;
> - the applicant must demonstrate that no other allocations or 
> assignments will meet this need.
> Comments:
> Timetable for implementation: Immediate
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