[ppml] Policy Proposal 2007-25: IPv6 Policy Housekeeping - Last Call

Member Services info at arin.net
Tue Oct 23 13:37:14 EDT 2007

Policy Proposal 2007-25
IPv6 Policy Housekeeping

The ARIN Advisory Council (AC), acting under the provisions of the ARIN
Internet Resource Policy Evaluation Process (IRPEP), determined that
there is community consensus in favor of the proposal and moved it to
last call. The AC made this determination at their meeting at the
conclusion of the ARIN Public Policy meeting on 18 October 2007. The
Chair of the AC reported the results of the AC meeting during the
Members Meeting. The AC Chair's report can be found at:

The policy proposal text is provided below and is also available at:

Comments are encouraged. All comments should be provided to
ppml at arin.net. This last call will expire at 23:59, Eastern Time, 6
November 2007.

The ARIN Internet Resource Policy Evaluation Process can be found at:


Member Services
American Registry for Internet Numbers (ARIN)

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Policy Proposal 2007-25
IPv6 Policy Housekeeping

Author: Leo Bicknell

Proposal type: modify

Policy term: permanent

Policy statement:

Change I:

In section, replace the existing statement with the new statement:

"be an existing, known ISP in the ARIN region or have a plan for making
at least 200 end-site assignments to other organizations within 5 years."

Change J:

Remove section 6.5.3 entirely. Update all subsequent sections to have
new section numbers (6.5.[n-1]).

Replace part of the text as (new) section

"All /56 and larger assignments to end sites are required to be
registered either by the LIR or its subordinate ISPs in such a way that
the RIR/NIR can properly evaluate the HD-Ratio when a subsequent
allocation becomes necessary."

Change K:

Section, add the following sentence to the end of the first

"An HD-Ratio of .94 must be met for all assignments larger than a /48."

Add to the end of the second paragraph:

"This reservation may be assigned to other organizations later, at
ARIN's discretion."

Change L:

Section, add a sentence between the two existing sentences:

"Justification will be determined based on the .94 HD-Ratio metric."


When the IPv6 policy was passed, it was considered to be an "interim"
policy, and it was intended to be similar in all 5 RIR's. Since that
time it has become clear the policy is no longer interim (and proposal
2007-4 was passed to change just that) and it has also been modified
separately in the different RIR's.

It was brought to the ARIN AC's attention that there were a number of
problems with "Section 6" of the NRPM as a result of this legacy:

* The policy contained a large number of items that were not policy. *
The policy contained a few items that were self contradictory. * The
added text was redundant in some cases with existing text. * The policy
was overly vague in a few areas, leaving ARIN staff to have to make
interpretations of what the policy intended. * Policy changes made since
the initial IPv6 policy was adopted have not always updated all of the
relevant sections due to the complexity of section 6.

The intent of these changes is not to change any existing policy, but
rather to remove all non-policy items, and update any ambiguous items
with the way that ARIN staff is currently interprets the policy.

Change I:

Proposal 2005-8 amended section to allow /56 and /64
allocations, but section was never updated to match the
change. It is believed the intent of the policy, and ARIN staff's
current interpretation of the policy match the updated text.

Change J:

The first part is not policy, and incorrectly states there is no policy
as section 6.5.4 has the policy in it. Take the one useful part and make
it part of the 6.5.4 criteria.

Change K:

No metric is currently listed to justify a larger initial assignment. It
is believed ARIN staff is currently applying the HD-Ratio similar to the
ISP policy, this puts that in writing.

Make it clear that the reservation may not exist in perpetuity.

Change L:

No metric is given to justify additional assignments. It is believed
that ARIN staff is currently applying the HD_Ratio similar to the ISP
policy, this puts that in writing.

Timetable for implementation: Immediate

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