[ppml] Policy Proposal: IPv6 Assignment Guidelines - version 3
The author submitted a revised version of their proposal.
American Registry for Internet Numbers (ARIN)
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Policy Proposal Name: IPv6 Assignment Guidelines
Author: Leo Bicknell and Ed Lewis
Proposal Version: 3.0
Submission Date: 8/23/2007
Proposal type: new
Policy term: permanent
Delete the text in 220.127.116.11 and Replace the text in section 18.104.22.168
with the following text:
Assignments by LIRs /48 or smaller will not be reviewed by ARIN.
Assignments greater than /48 will be reviewed to see if the additional
space is warranted according to the 0.94 HD ratio policy. If the
space is not warranted, ARIN will consider the excess space to be
available for a different assignment, lowering the overall utilization
score of the LIR.
The existing section 22.214.171.124 does not provide clear guidance on how
ARIN should treat prefixes allocated to a site should an ISP come
back for additional space in the future. This makes it difficult
for LIR's to know if they are allocating in accordance with the
rules under which they will be judged in the future. The existing
section also provides no guidence on what the LIR or ARIN should
do in the case a larger prefix is necessary.
Timetable for implementation: immediate
Member Services wrote:
> ARIN received the following policy proposal. In accordance with the ARIN
> Internet Resource Policy Evaluation Process, the proposal is being
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> American Registry for Internet Numbers (ARIN)
> ## * ##
> Policy Proposal Name: IPv6 Assignment Guidelines
> Author: Leo Bicknell
> Proposal Version: 1.0
> Submission Date: 8/17/2007
> Proposal type: new
> Policy term: permanent
> Policy statement:
> Replace the text in section 126.96.36.199 with the following text:
> LIR's may assign blocks in the range of /48 to /64 to end sites.
> All assignments made by LIR's should meet a minimum HD-Ratio of .25.
> * /64 - Site needing only a single subnet.
> * /60 - Site with 2-3 subnets initially.
> * /56 - Site with 4-7 subnets initially.
> * /52 - Site with 8-15 subnets initially.
> * /48 - Site with 16+ subnets initially.
> For end sites to whom reverse DNS will be delegated, the LIR/ISP should
> consider making an assignment on a nibble (4-bit) boundary to simplify
> reverse lookup delegation.
> LIR's do not need to issue all 5 sizes of prefixes as long as the
> HD-Ratio requirement is met.
> The existing section 188.8.131.52 does not provide clear guidance on how
> large of a prefix to allocate to a site. This makes it difficult for
> LIR's to know they are in compliance with the rules, and makes it harder
> for ARIN staff to evaluate requests per the communities wishes.
> This policy is based on an HD Ratio of .25 for end sites. The following
> table may be useful:
> Prefix Size Number of Subnets Required in Use to Meet .25
> ----------- ----------------- ---------------------------
> /64 1 1
> /60 16 2
> /56 256 4
> /52 4096 8
> /48 65536 16
> It is believed this policy provides clear guidance while allowing LIR's
> to make generous allocations to their end-sites.
> Timetable for implementation: immediate for new requests, 2 year grace
> period for all existing assignments.
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