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

Andrew Dul andrew.dul at quark.net
Wed Nov 6 15:53:37 EST 2019

On 11/6/2019 11:21 AM, John Santos wrote:
> On 11/6/2019 12:57 PM, ARIN wrote:
>> 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.
> This contradicts the statement above that the maximum allocation or
> assignment is a /21, not a /24.  Or is it intended that the initial
> allocation or assignment is always a /24, but the recipient can later
> ask for more, up to a /21, with appropriate justification?
> Or is it worded that way so that if an applicant comes back for a
> second (or subsequent) allocation/assignment under this section (for a
> second discrete network?) they may receive no more than a /21 in total?
> Also, if the allocation or assignment is a /24, no more and no less,
> what is the point of the 2nd sentence that ARIN should use sparse
> allocation?  Is it so applicants taking a second dip will, if
> possible, get a contiguous /24 each time?
The original intent of this rewrite is that the initial assignment or
allocation will always be a /24.  Any additional assignments will also
be a /24.  An organization could come back every 6 months to get more
addresses up to a /21.


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