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[AfriNIC-rpd] IPv4 Softlanding Policy AFPUB-2010-v4-005-draft-03

Douglas Onyango ondouglas at
Tue May 10 08:39:24 UTC 2011

Attached and below is the updated text of the Policy Proposal.
Ref Name:      AFPUB-2010-v4-005-draft-03
Author(s):     Douglas Onyango | Digiclear E.Africa Ltd | ondouglas at
Draft Version: 12
Submitted:      2011-05-08
   a. AFPUB-2005-v4-001
   b. AFPUB-2007-GEN-001

[1] Summary of the Problem Being Addressed by this Policy Proposal

Because the Global IPv4 free pool has run out, the IANA has implemented the Global Policy for the Allocation of the 

Remaining IPv4 Address Space - meaning after the Final /8, RIRs will 

nolonger receive Address space from the IANA as in the past. This puts AfriNIC in a precarious situation as the current 

allocation and assignment Policy cannot be sustained in the mid to longterm.

[2] Summary of How this Proposal Addresses the Problem 

In order to ensure a smooth transition to IPv6,  AfriNIC's  pool  should be managed to provide members with address space  

after the IPv4  pool is depleted.  This will help in maintaining IPv4 networks while deploying IPv6 networks - a practice 

that characterizes the transition period. This document proposes a strategy for allocation and Assignment and maintenance 

of AfriNIC's IPv4 pool post exhaustion. This policy begins when AfriNIC starts to allocation space from the Final /8 

[3] The Proposal

This policy (IPv4 Soft Landing), applies to the management of address space that will be available to AfriNIC after the 

current IPv4 pool is depleted. The purpose of this document is to ensure that address space is assigned and/or allocated in 

a manner that is acceptable to the AfriNIC community especially during this time of IPv4 exhaustion.

3.1 Policy Documents to be affected:

IPv4 Allocation Policy

Proposal to Change the Allocation & Assignment Period to 12 months


3.2 Definitions:

Local Internet Registry (LIR)

A Local Internet Registry (LIR) is an Internet Registry (IR) that receives allocations from an RIR and assigns address 

space to customers who use its services. LIRs are generally ISPs and their customers are end-users and possibly other ISPs. 

LIRs must be members of an RIR like AfriNIC; which serves the Africa Region and part of the Indian Ocean (Comoros, 

Madagascar, Mauritius, and Seychelles).

Existing LIR's

An Existing LIR is a LIR that assigns address space to 'end-users' and has already been assigned or allocated IPv4 address 

space by AfriNIC.


A New LIR, is a LIR that assigns address space to 'end-users' and is a member of AfriNIC but has not been assigned or 

allocated any IPv4 address space prior to the Exhaustion phase.

End User

An End User is an organization that receives assignments of IP addresses exclusively for use in its operational networks

Final /8 block of IPv4 address space, or "Final /8".

The Final /8 block of IPv4 address space, or "Final /8", is the /8 block of IPv4 address space that has been allocated by 

the IANA to AfriNIC in terms of section 2.2 C of the Global Policy for the Allocation of the Remaining IPv4 Address Space 

<> at the time of exhaustion of the IANA pool of IPv4 

address space. AfriNIC's version of the Global Policy for the Allocation of the Remaining IPv4 Address Space is also known 

as AFPUB-2009-v4-001 <>.

3.3 Summary

This proposal describes how AfriNIC shall assign, allocate, and manage IPv4 resources during the "Exhaustion Phase" which 

begins when AfriNIC first needs to assign or allocate IP addresses from the Final /8 block of IPv4 address space.

3.4 Current Phase:

The "Current Phase" is the status quo at the time of adoption of this policy.  During this phase, AfriNIC will continue 

allocating or assigning IPv4 addresses to LIRs and End Users using the current policies, including AFPUB-2005-v4-001 

<>, AFPUB-2006-GEN-001
<>, and any future amended versions of such policies.

The current phase will continue until an otherwise-valid request for IPv4 address space from any LIR or end user to AfriNIC 

either (a) cannot be fulfilled with the IPv4 address space available in the AfriNIC pool (with the exception of the Final 

/8), or (b) can be fulfilled, but would leave the AfriNIC IPv4 address pool empty (with the exception of the Final /8).

The request that results in either of the above conditions being fulfilled will be the last IPv4 address space request that 

AfriNIC will accept from any LIR or End User in the Current Phase.  If the request can be processed in terms of the Current 

Phase policies, then it will be so processed; otherwise, it will be processed in terms of Exhaustion Phase policies.

AfriNIC will publically announce that the Exhaustion Phase has begun at this point. For the avoidance of doubt all 

applications that are currently in the process at this point will be evaluated as per the new policy

3.5 Exhaustion Phase:

During the Exhaustion Phase, the following allocation and assignment policy will be used.  This policy applies to both LIRs 

and End Users, and applies to all IPv4 address space allocated, assigned, or otherwise managed by AfriNIC during the 

transition to and after the beginning of the Exhaustion Phase, regardless of whether or not such IPv4 address space is a 

part of the Final /8

The exhaustion phase will be divided into two parts:-
a) Exhaustion Phase 1
b) Exhaustion Phase 2

3.5.1 Exhaustion Phase 1
During this phase, allocation/assignment of address space will continue as in the Current phase (/24 for a EU and /22 for a 

LIR) but the maximum will change from /10 to /13.

Allocations and assignments will be made from the Final /8 or from any other IPv4 address space available to AfriNIC, until 

no more than a /11 of non-reserved space is available in the Final /8.  At this point the Exhaustion Phase 2 will begin. 

For the avoidance of doubt all applications will be in the process at this point will be evaluated as per the new policy

Exhaustion Phase 2
During this phase a minimum allocation/assignment size will be /27, and the maximum will be /22 per allocation/assignment.

3.6) If any LIR or End User requesting IPv4 address space during the Exhaustion Phase does not already have IPv6 address 

space, then AfriNIC shall allocate or assign an IPv6 address block in compliance with the IPv6 allocation or assignment 

policies in effect at the time.

There is no explicit limit on the number of times an organization may request additional IPv4 address space during the 

Exhaustion Period

3.7) The current allocation and assignment period of 12 months shall be changed to 8 months. This will help to ensure that 

LIRs request only for resources they need in the short to medium term, and promote fairness in the equitable distribution 

of the last IPv4 address pool. This assignment period will remain the same throughout the life span of this Policy

3.8 Allocation Criteria

In order to receive IPv4 allocations or assignments during the Exhaustion Phase, the LIR or End User must have used at 

least 90% of all previous allocations or assignments (including those made during both the Current Phase and the Exhaustion 

Phase).  In the case of new LIRs or End Users with no previous allocations or assignments, this requirement does not apply 

to their first allocation or assignment request.

AfriNIC resources are for the AfriNIC geographical region. For each allocation or assignment made during the Exhaustion 

Phase, no more than 10% of these resources may be used outside of the AfriNIC region, and any use outside the AfriNIC 

region shall be solely in support of connectivity back to the AfriNIC region.

3.9 IPv4 Address Space Reserve

A /12 IPv4 address block will be in reserve out of the Final /8. This /12  IPv4 address block shall be preserved by AfriNIC 

for some future uses,  as yet unforeseen. The Internet is innovative and we cannot predict with  certainty what might 

happen. Therefore, it is prudent to keep this block in reserve, just in case some future requirement creates a demand for 

IPv4 addresses.

When AfriNIC, can no longer meet any more requests for address space (from the Final /8 or from any other available address 

space), the Board may at its discretion and considering the demand and other factors at the time replenish the exhaustion 

pool with whatever address space (or part thereof) that may be available to AfriNIC at the time, in a manner that is in the 

best interest of the community.

Thanks to RPD-ML and especially Alain Aina and Alan Barrett for their contributions.

4.0. Revision History (for all but the very first draft)

Version 1
Removed IPv6 Adoption plans and deployment as requirements for receiving
IPv4 address space in this policy as Members Technology choices are
outside AfriNIC's purview

Version 3
Changed the scope of the document to cover IPv4 address space outside
the /8 to avoid writing a new policy for IPv4 address space that
AfriNIC might have outside the /8

Version 5
Removed 4 blocks as maximum possible allocation blocks in policy
To eliminate the possibility of remaining with unusable space in the pool

Version 8
Changed the Minimum and Maximum Allocation sizes to /24 and /22 respectively 
to cater for small requests by members transitioning who only need small blocks for interoperability

Version 9
Made all the allocation/assignments only usable within the AfriNIC region
to curb Black Market practices that could crop up post exhaustion)

Version 10
Changed the Problem Statement due to Global IPv4 free pool running out

Version 11
Changed the phase names from ÒModified status-quoÓ and ÒIPv6 TransitionÓ to
ÒExhaustion Phase 1Ó and ÒExhaustion Phase 2Ó in response to comments at the AriNIC-13 meeting

Changed wording in 3.5 Exhaustion Phase to cover Address space outside the Final /8 - in response to comments at the 

AriNIC-13 meeting

Version 12
Change 3 to include "assigned and/or allocated" for clarity.

Douglas Onyango | +256(0712)981329
Life is the educators practical joke in which you spend the first half learning, and the second half learning that everything you learned in the first was wrong.
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