[arin-ppml] Policy Proposal: Depleted IPv4 reserves

Tue Dec 2 17:17:44 EST 2008

Considering that I work for one of them, I would agree that it is not
better to cut off the larger providers. :)

The reality is that they will be cut off regardless of whether this
policy is in place or not. The final fragments of unallocated space will
not serve the needs of the largest ISP's. The intent is to provide some
last minute consistency in the rate of depletion.

ARIN's reserves do not deplete at a constant rate. They are dependent on
the timing of the organizations that request space, and these can come
in a rush. Once 2007-23 (End Policy for IANA IPv4 allocations to RIR's)
is triggered, ARIN will receive its last /8 from IANA. At a constant
rate, a business could receive a small allocation from this reserve
within the next six  to 12 months, and plan appropriately.

The extra large organization is already excluded from this option. Six
months from that point, there will not be enough left to serve their
needs. That leaves the final reserve to the first two or three extra
large ISP that submit a qualified request. If this happens, these final
reserves might accommodate the needs of less than one business quarter,
rather than six months or more. 

This means that businesses cannot use the last /8 allocation as a
milestone in planning, which is part of the reason 2007-23 was approved.
I know the next response will be "tough luck" if you still haven't
gotten your act together by this point, but we all know that nobody
studies until the night before the exam. The intent of the proposal was
to provide for a 6 to 12 month window of consistency that will serve the
needs of the majority of the member orgs, at the cost of one or two
organizations who's business model has already been forced to change by
this point.

-Dan

-----Original Message-----
From: arin-ppml-bounces at arin.net [mailto:arin-ppml-bounces at arin.net] On
Behalf Of Jo Rhett
Sent: Tuesday, December 02, 2008 4:24 PM
To: arin-ppml at arin.net
Subject: Re: [arin-ppml] Policy Proposal: Depleted IPv4 reserves

I'm not sure I see what goal you are trying to accomplish with this
proposal.  Why is it better to cut off larger providers to ensure that  
smaller organizations can continue to get space?   This is good for  
the smaller organization obviously.   Why is it good for the entire  
ARIN region?

On Dec 2, 2008, at 11:53 AM, Member Services wrote:
> ARIN received the following policy proposal. In accordance with the 
> ARIN Internet Resource Policy Evaluation Process, the proposal is 
> being posted to the ARIN Public Policy Mailing List (PPML) and being 
> placed on ARIN's website.
>
> The ARIN Advisory Council (AC) will review this proposal at their next

> regularly scheduled meeting. The AC will assign shepherds in the near 
> future. ARIN will provide the names of the shepherds to the community 
> via the PPML.
>
> In the meantime, the AC invites everyone to comment on this proposal 
> on the PPML, particularly their support or non-support and the 
> reasoning behind their opinion. Such participation contributes to a 
> thorough vetting and provides important guidance to the AC in their 
> deliberations.
>
> The ARIN Internet Resource Policy Evaluation Process can be found at:
> http://www.arin.net/policy/irpep.html
>
> Mailing list subscription information can be found at:
> http://www.arin.net/mailing_lists/
>
> Regards,
>
> Member Services
> American Registry for Internet Numbers (ARIN)
>
>
> ## * ##
>
>
> Policy Proposal Name: Depleted IPv4 reserves
>
> Author:  Dan Alexander
>
> Proposal Version: 1
>
> Submission Date: 12/2/2008
>
> Proposal type: New
>
> Policy term: Permanent
>
> Policy statement:
>
> (add the following section to the nrpm)
>
> 4.1.8 Depleted IPv4 reserves
>
> A limit will be applied to all IPv4 address requests when ARIN's 
> reserve of unallocated IPv4 address space drops below an equivalent 
> /9. When this happens, an ISP or End User may receive up to a single 
> /20 within a six month period.
>
> Rationale:
>
> As the reserve of IPv4 address space becomes smaller, there is a risk 
> that many organizations will be denied resources by a large, last 
> minute request. By implementing a throttle on the last of the IPv4 
> address space, a more limited group of organizations will be impacted,

> allowing many organizations to receive ongoing resources during the 
> transition to IPv6.
>
> According to the ARIN statistics page
> http://www.arin.net/statistics/index.html, 1,993 organizations were 
> issued IP space in 2006 and 2007. Of these allocations 41% of the 
> applicants received less than a /20. On the opposite end, 82 
> organizations received large blocks. Given that the last reserve of
> IPv4
> space cannot possibly meet the needs of the 82 organizations, the 
> space could be managed in a way to provide for the needs of a wider 
> base of consumers while the largest ISP's build momentum behind IPv6.
>
> The goal is to find a balance between the needs of organizations 
> requiring space, and avoiding the restrictions on end user growth. For

> this reason, any caps on allocations should be implemented when the 
> reserves are essentially depleted, rather than trying to restrict end 
> user growth when IP space is still readily available.
>
> By putting a six month window on the maximum allocation, the remaining

> IP space could provide at least one year for everyone to implement 
> other solutions while still being able to obtain an IPv4 address 
> allocation.
> The time period was also added to provide a consistent rate of 
> depletion, avoiding a scenario where a large organization could queue 
> multiple, justifiable requests, resulting in the scenario the proposal

> is intended to avoid.
>
> Additional language may need to be added in the event a paid transfer 
> policy is approved. The thinking is to have two pools of available IP.
> One being the current IANA allocated, reserve of IP space. The second 
> being IP blocks recovered through monetary incentive. This proposal 
> would apply to the IANA allocated reserves and would not apply to 
> blocks made available by monetary means.
>
> An additional thought was to avoid tying this policy shift 
> specifically to the last /8 allocated by IANA. This allows the policy 
> to come in and out of play in the event that IPv4 address space is 
> abandoned or returned to ARIN.
>
> Timetable for implementation: Immediate
>
>
> _______________________________________________
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--
Jo Rhett
senior geek

Silicon Valley Colocation
Support Phone: 408-400-0550

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