[arin-ppml] Draft Policy ARIN-2023-1: Retire Slow Start

Hunter, Kathleen Kathleen_Hunter at comcast.com
Wed May 24 10:57:21 EDT 2023

Matt- Just to clarify, the slow start policy was implemented when the wait list did not exist. Slow start was to prevent large ISPs from coming in and getting large blocks like /16s at the start and prove they needed the space over a period of time. Those ISPs now, don’t even qualify for the waitlist because they already have a /20. Small blocks are barely available.  Currently wait list policy should be pointed to as it states
“4.1.8. ARIN Waitlist
ARIN will only issue future IPv4 assignments/allocations (excluding 4.4 and 4.10 space) from the ARIN Waitlist. The maximum size aggregate that an organization may qualify for at any one time is a /22. Organizations will be able to elect a smaller block size than they qualify for down to a /24. Organizations which hold more than a /20 equivalent of IPv4 space in aggregate (exclusive of special use space received under section 4.4 or 4.10) are not eligible to apply.”
  Because of the newest restrictions in the waitlist policy, it has essentially rendered Slow Start useless.

-Kat Hunter
Comcast LIR

From: ARIN-PPML <arin-ppml-bounces at arin.net> On Behalf Of Matt Erculiani
Sent: Wednesday, May 24, 2023 10:37 AM
To: ARIN <info at arin.net>
Cc: arin-ppml at arin.net
Subject: Re: [arin-ppml] Draft Policy ARIN-2023-1: Retire Slow Start

Loosely not in favor

> Staff has confirmed that this policy has not been used since 2018.
It still may be a deterrent when seeking transfer or a place on the waiting list.

While not a great reason to keep it around, I've frequently seen this policy referenced by ISPs for why they can't immediately lease out large blocks to customers "if we have to play by this rule, so do you".


On Tue, May 23, 2023 at 10:29 AM ARIN <info at arin.net<mailto:info at arin.net>> wrote:
On 18 May 2023, the ARIN Advisory Council (AC) accepted "ARIN-prop-319: Retire Slow Start" as a Draft Policy.

Draft Policy ARIN-2023-1 is below and can be found at:


You are encouraged to discuss all Draft Policies on PPML. The AC will evaluate the discussion to assess the conformance of this draft policy with ARIN's Principles of Internet number resource policy as stated in the Policy Development Process (PDP). Specifically, these principles are:

* Enabling Fair and Impartial Number Resource Administration
* Technically Sound
* Supported by the Community

The PDP can be found at:


Draft Policies and Proposals under discussion can be found at: https://www.arin.net/participate/policy/drafts/<https://urldefense.com/v3/__https:/www.arin.net/participate/policy/drafts/__;!!CQl3mcHX2A!HDtO8T-BPF6u8FBvBkhhhZP4Rhg9Iy847aQOrLgeT9qhU5SzRR-Fz7Efne3b7keLJ6GvZA5_wiqiOOLdMvU2TfLoSyNx7Ks$>


Eddie Diego
Policy Analyst
American Registry for Internet Numbers (ARIN)

Draft Policy ARIN-2023-1: Retire Slow Start

Problem Statement:

Section Slow Start has been a part of the NRPM for two decades, and successfully served to constrain the rate at which ARIN issued IPv4 address allocations to its members for many years. Following the exhaustion of the free pool, as well as the introduction and refinement of transfer policies, Slow Start has ceased to be applicable to the operations of ARIN's registration services. Staff has confirmed that this policy has not been used since 2018.

Policy statement:

Retire Slow Start

Timetable for implementation: Immediate

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Matt Erculiani
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