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prop-117-v002: Returned IPv4 address management and Final /8 exhaustion

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Proposer:       Tomohiro Fujisaki
                fujisaki@syce.net


1. Problem statement
--------------------

APNIC currently makes delegations from two IPv4 pools. These are the 
103/8 (Final /8) pool and the non-103/8 IPv4 Recovered pool. 

With current policy, all returned address space, including 103/8 blocks,
will be merged into the IPv4 Recovered pool.

If a 103/8 block is returned, it is placed in the IPv4 Recovered pool 
and re-distributed as returned space. Some organisations may receive 
duplicate blocks from 103/8: one under the final /8 policy, the other 
under the returned pool policy.

Current APNIC Policy requires account holders to receive address space 
from the 103/8 (Final /8) pool before they can apply for address space 
from the Recovered pool.

APNIC currently manages a Recovered Pool Waiting List for approved 
requests that cannot be met from the IPv4 Recovered pool.


2. Objective of policy change
-----------------------------

To simplify the address pool management and to provide guidance for 
103/8 pool exhaustion.


3. Situation in other regions
-----------------------------

None.


4. Proposed policy solution
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Handling reurned address:
  - Recovered 103/8 space will be placed in the 103/8 (Final /8) pool.
  - Recovered non-103/8 space will be placed in the IPv4 Recovered pool.

Guidance for 103/8 pool exhaustion:
  - The first time an approved request cannot be fulfilled from the 103/8 
    pool, Final /8 delegations will end.
  - APNIC will begin to manage only one (Recovered) IPv4 pool containing 
    any residual 103/8 space and all future returns, including 103/8 
    returns.
  - Each new account holder can receive up to a /21 from the IPv4
    Recovered pool.
  - Existing account holders who have not yet received the maximum /21
    from the two pools may continue to apply for space from the 
    Recovered pool until they have received a maximum /21 from the 
    two pools.
  - A waiting list will be created if approved requests cannot be 
    fulfilled. Each new account holder will be given priority in the
    waiting list.


5. Advantages / Disadvantages
-----------------------------

Advantages:

  - Simplifying management of remaining IPv4 address pools.

Disadvantages:

None.


6. Impact on resource holders
------------------------------

No impact to resource holders.


7. References
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