[ppml] Policy Proposal 2005-5: IPv6 HD ratio

[Andrew Dul]

Hello,

This policy proposal will be discussed at the upcoming ARIN meeting.  We
encourage you to voice your opinions regarding this policy on the mailing
list prior to the meeting so the issues can be discussed.

A similar policy was recently discussed at the APNIC meeting in Hanoi, and
it appeared that there was rough consensus at the meeting to move the HD
ratio portion of the APNIC policy back to the APNIC mailing-list for the
additional comment period per the APNIC policy process.   Consensus did not
appear to be reached on the end-site subnet size of the APNIC policy (ARIN
policy proposal 2005-8).  

http://www.apnic.net/docs/policy/proposals/prop-031-v001.html

Thanks,
Andrew
ARIN AC
 

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>
>Policy Proposal Name: IPv6 HD ratio
>
>Author: Andrew Dul
>
>Policy term: permanent
>
>Policy statement: Change HD ratio used for IPv6 allocations to 0.94
>
>This would modify sections 6.5.2.2 & 6.7 (including the HD-ratio to
>percentage table) of the NRPM.
>
>Rationale: Recent research has shown that based upon certain growth
>models the current IPv6 allocation policy using the HD ratio of 0.8 will
>allocate between a
>/1 and /4 of Ipv6 address space over the period of about 60 years.
>
>http://www.ietf.org/internet-drafts/draft-huston-ipv6-hd-metric-00.txt
>
>By changing the HD ratio to 0.94, this would require LIRs to have a
>higher utilization of the /48s that are assigned to end sites before
>being able to obtain additional allocations.  This policy would change
>the threshold for an LIR holding a /32 from approximately 11% to 51%.
>An LIR with a /20 would have a utilized percentage of approximately 31%
>vs. the current 2%.
>
>This policy may also prevent the hoarding of IPv6 addresses by current
>organizations with large customer bases, but no substantial current IPv6
>network.
>
>Timetable for implementation: Within 30 days of ratification by the BoT.
>