[arin-ppml] Policy Proposal 114: RFC1918 as initial ISP multihomed criteria

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Fri May 7 12:28:27 EDT 2010

ARIN received the following policy proposal and is posting it to the
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Policy Proposal 114: RFC1918 as initial ISP multihomed criteria

Proposal Originator: Steve Bertrand

Proposal Version: 1

Date: 7 May 2010

Proposal type: Modify

Policy term: Permanent

Policy statement:

Append the following statement to the end of all three criteria under

", or the equivalent number of addresses within RFC 1918 space."


There are times when I've come across an ISP network in which either
their, or one of their ISP clients access networks will fit the
requirements based on addresses, but they utilize RFC 1918 space with
numerous layers of NAT, with only a very small block of public address
space from their upstream(s).

In that case, to qualify under the multi-homed policy, the ISP (and/or
its clients) would first have to renumber out of the private space into
an upstream space, and then renumber again after receiving the
allocation from ARIN.

This brief amendment would alleviate the double renumbering, and
conserve the human resources required by all parties involved.

Although I've considered ideas on how the use of RFC 1918 space could be
justified to ARIN, I feel that this could be hashed out on the list if
the intent of the proposal is accepted by the community.

Timetable for implementation: immediate

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