The ARIN Advisory Council (AC) met on 17 April 2024, and sent the following 
Recommended Draft Policy to Last Call. 

*Recommended Draft Policy ARIN-2023-1: Retire 4.2.1.4. Slow Start

Feedback is encouraged during the Last Call period. All comments should be 
provided to the Public Policy Mailing List. Last Call will expire on 6 May 2024.

The Recommended Draft Policy text is below and available at:

https://www.arin.net/participate/policy/drafts/2023_1/

The ARIN Policy Development Process is available at:

https://www.arin.net/participate/policy/pdp/

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


Recommended Draft Policy ARIN-2023-1: Retire 4.2.1.4. Slow Start

Current Text (23 May 2023)

AC Assessment of Conformance with the Principles of Internet Number Resource 
Policy:

Based on community feedback and AC discussion Draft ARIN-2023-1: Retire 
4.2.1.4. Slow Start has been moved to Recommended Draft. This policy, if 
adopted, will retire section 4.2.1.4 Slow Start which served its purpose to 
constrain the rate of IPv4 allocations made by ARIN and has not been in use 
since 2018 due to the exhaustion of the IPv4 free pool and introduction of 
transfer policies. This Draft Policy is fair, impartial, and technically sound.

Problem Statement:

Section 4.2.1.4 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 4.2.1.4 Slow Start

Timetable for Implementation: Immediate



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