Recommended Draft Policy ARIN-2025-8

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Current Text (14 July 2025)

AC Assessment of Conformance with the Principles of Internet Number Resource Policy

Recommended Draft Policy ARIN-2025-8 conforms to the principles of the ARIN Policy Development Process. This policy, if adopted, clarifies within the NRPM ARIN’s current practices for managing IPv4 addresses allocated to facilitate IPv6 Deployment (IPv4 allocations governed by Section 4.10 in the NRPM). There were concerns from a small subset of the community that the added language was too ambiguous. Follow-ups to both the PPML and at the ARIN 57 in-person meeting did not reveal any additional concerns about the ambiguity of the language in this policy, nor did they yield any suggestions for how the wording could be made less ambiguous. This policy did receive community support both at the most recent ARIN meeting and in prior meetings. We have found this policy to be fair and impartial, and technically sound."

Problem Statement

ARIN 4.10 allocations, reserved to facilitate IPv6 deployment, currently have no restrictions for out-of-region use beyond the general restrictions laid out in Section 9. As the use of these allocations outside of the ARIN region seems to be contrary to the intentions for use of this space - and ARIN staff has interpreted the policy as such - the prohibition of this practice should be codified in policy.

Policy Statement

Change the second sentence in NRPM Section 4.10 from:

“This IPv4 allocation will be set aside and dedicated to facilitate IPv6 deployment.”

to:

“This IPv4 allocation will be set aside and dedicated to facilitate IPv6 deployment within the ARIN service area”

Timetable for Implementation

Immediate

Comments: This proposal was prompted by community feedback to Registration Services, as reported in the ARIN 55 Policy Experience Report. ARIN staff has indicated that there is no intention to extend this restriction to 4.10 allocations assigned before the implementation of this policy.

Staff and Legal Review (12 November 2025)

Staff Understanding: The current implementation of Section 4.10 (Dedicated IPv4 Allocations to Facilitate IPv6 Deployment) requires that IPv4 addresses be used within the ARIN region. Draft Policy ARIN-2025-8: Reserve 4.10 Space for In-Region Use codifies the current practices applied by ARIN staff when processing requests under Section 4.10. This policy does not alter existing review practices; it formally documents the longstanding approach ARIN staff has used and will continue to apply.

Implementable as Written?: Yes

Impact on ARIN Registry Operations and Services: None

Legal Review: No material legal issue

Implementation Timeframe Estimate: 3 months

Implementation Requirements:

• Staff Training
• Updates to public documentation
• Updates to internal procedures and guidelines

Proposal/Draft Policy Text Assessed: 14 July 2025

History and Earlier Versions

Related Meetings