________________________________________________________________________

prop-031-v002: 	Proposal to amend APNIC IPv6 assignment and utilisation
                requirement policy
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Authors:    Stephan Millet  <stephan (a) telstra.net>
            Geoff Huston	<gih (a) apnic.net>

Version:    2.0

Date:       19 September 2005

 
Purpose
-------

To amend the APNIC IPv6 address allocation policies regarding the 
definition of the threshold value for end-site allocation efficiency.

These measures, if undertaken generally by all RIRs, and assuming that
further measures are undertaken by the addressing community regarding 
the general adoption of an end-site allocation size that would be 
substantially smaller than the existing default value of a /48, would 
increase the anticipated useful lifetime of IPv6 to encompass a period 
in excess of 100 years, in which case no further allocation policy 
changes would be anticipated.


Proposal
--------

To amend the IPv6 threshold end site allocation utilisation level to 
that matching an HD Ratio value of 0.94.


Impact summary
--------------

  End users:

    There is no impact arising from this policy proposal.


  ISPs and LIRs:

    With the higher threshold end-site allocation efficiency level, 
    when based on a 0.94 HD Ratio, ISPs will need to undertake network
    address plans according to this target level.


  NIRs:

    These proposed policy changes are not anticipated to any impact on
    NIR operation, other than implementation of a 0.94 density metric 
    to replace the existing 0.80 value, as per APNIC policy.


  APNIC:

    APNIC will need to amend its IPv6 criteria to reflect the altered 
    HD ratio.


Background material
-------------------

This material is not formally part of the policy proposal. It is 
included here only for informational purposes.


1. Paper: The IPv6 Address Plan  
   http://www.potaroo.net/ispcol/2005-07/ipv6size.html
   Geoff Huston

2. Internet Draft: draft-narten-iana-rir-ipv6-considerations-00.txt
   http://draft-narten-iana-rir-ipv6-considerations.potaroo.net/
   Thomas Narten

3. Internet Draft: draft-narten-ipv6-3177bis-48boundary-00.txt
   http://draft-narten-ipv6-3177bis-48boundary.potaroo.net/
   Thomas Narten
   Geoff Huston
   Lea Roberts