[arin-ppml] LAST CALL - Recommended Draft Policy ARIN-2012-2: IPv6 Subsequent Allocations Utilization Requirement

ARIN info at arin.net
Mon Apr 29 14:23:42 EDT 2013

The ARIN Advisory Council (AC) met on 24 April 2013 and decided to
send the following draft policy to last call:

   Recommended Draft Policy ARIN-2012-2: IPv6 Subsequent Allocations 
Utilization Requirement

Feedback is encouraged during the last call period. All comments should
be provided to the Public Policy Mailing List. This last call will
expire on 13 May 2013. After last call the AC will conduct their
last call review.

The draft policy text is below and available at:

The ARIN Policy Development Process is available at:


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

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Recommended Draft Policy ARIN-2012-2
IPv6 Subsequent Allocations Utilization Requirement

Date: 26 March 2013

AC's assessment of conformance with the Principles of Internet Number 
Resource Policy:

Policy 2012-2 enables fair and impartial resource administration by 
creating an additional criteria under which LIRs can qualify for a 
subsequent allocation. This policy does not modify the definition of who 
is covered under the existing policy. This proposal addresses a 
technical blindspot in the existing subsequent allocation policy that 
limits initial IPv6 deployment growth. Over the last year, there has 
been significant community support on the mailing list and at meetings 
to rectify this blindspot. Coming to an agreement on specific wording 
that does not open this to abuse has been more difficult.

Policy statement:

The change to the NRPM is the addition of the third bullet in 6.5.3.b.

2.14. Serving Site (IPv6) When applied to IPv6 policies, the term
serving site shall mean a location where an ISP terminates or aggregates 
customer connections, including, but, not limited to Points of Presence 
(POPs), Datacenters, Central or Local switching office or regional or 
local combinations thereof.

6.5.3. Subsequent Allocations to LIRs

a. Where possible ARIN will make subsequent allocations by expanding the 
existing allocation.

b. An LIR qualifies for a subsequent allocation if they meet any of the 
following criteria:

* Shows utilization of 75% or more of their total address space

* Shows utilization of more than 90% of any serving site

* Has allocated more than 90% of their total address space to serving 
sites, with the block size allocated to each serving site being 
justified based on the criteria specified in section 6.5.2

c. If ARIN can not expand one or more existing allocations, ARIN shall 
make a new allocation based on the initial allocation criteria above. 
The LIR is encouraged, but not required to renumber into the new 
allocation over time and return any allocations no longer in use.

d. If an LIR has already reached a /12 or more, ARIN will allocate a 
single additional /12 rather than continue expanding nibble boundaries.

Rationale/Problem Statement:

Subnet expansion may occur rapidly and unevenly in the early stages of 
IPv6 deployment. Providers may find that they have put all of their 
subnets/serving sites into service, and do not have enough space to add 
an additional serving site. They may have plenty of space available 
within subnets to make customer assignments, but can not turn up a new 
location (eg city, pop).

Timetable for implementation: Immediately

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