[ppml] Policy Proposal 2007-24: IPv6 Assignment Guidelines - Revise

Member Services info at arin.net
Tue Oct 23 13:39:24 EDT 2007

Proposal 2007-24
IPv6 Assignment Guidelines

The ARIN Advisory Council (AC), acting under the provisions of the ARIN
Internet Resource Policy Evaluation Process (IRPEP), determined that
while there is not community consensus in favor of the proposal there is
consensus that the proposal should be revised and discussed further. The
AC made this determination at their meeting at the conclusion of the
ARIN Public Policy meeting on 18 October 2007. The Chair of the AC
reported the results of the AC meeting during the Members Meeting. The
AC Chair's report can be found at:

The AC will work with the author of the proposal to revise the text and
return the proposal to the PPML for further discussion.

The policy proposal text is provided below and is also available at:

The ARIN Internet Resource Policy Evaluation Process can be found at:


Member Services
American Registry for Internet Numbers (ARIN)

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Proposal 2007-24
IPv6 Assignment Guidelines

Author: Leo Bicknell and Ed Lewis

Proposal type: new

Policy term: permanent

Policy statement:

Delete the text in and Replace the text in section 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 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

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