[ppml] Policy Proposal 2002-3: Micro-Assignments for Multihomed Networks

This policy proposal was discussed at the previous Public Policy
Meeting and on the ARIN Public Policy Mailing List. Noting that there
was not adequate support at ARIN XI to accept this proposal as it was
written, additional feedback was requested.  The ARIN AC has reviewed
comments received since ARIN XI and has made modifications to the 
proposal text.

ARIN welcomes feedback and discussion about the following policy 
proposal in the weeks leading to the ARIN Public Policy Meeting 
in Chicago, Illinois, scheduled for October 22-23, 2003. All feedback 
received on the mailing list about this policy proposal will be 
included in the discussions that will take place at the upcoming 
Public Policy Meeting. 

This policy proposal discussion will take place on the ARIN Public 
Policy Mailing List. Subscription information is available at
http://www.arin.net/mailing_lists/index.html 

Member Services 
American Registry for Internet Numbers (ARIN) 

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Policy Proposal 2002-3: Micro-Assignments for Multihomed Networks

Proposal: 

If an end-user is not multi-homed, the minimum justified block of IP 
address space assigned by ARIN is a /20. If assignments smaller than
/20 are needed, end-users should contact their upstream provider.

If an end-user is multi-homed, and has an ARIN assigned ASN, the minimum
justified block of IP address space assigned by ARIN is a /22. Such 
assignment will be made from a reserve block for this purpose. If 
multi-homed assignments smaller than a /22 are needed, end users should 
contact their upstream provider.

Discussion:

It has further been argued that should this policy (or something 
following from it) be endorsed at the meeting, then an assessment 
should be made of the impact of this policy's implementation by number 
of requests and route table impact for 2 consecutive 6 month periods. 
If the impact is not believed to be problematic, then a proposal should 
be made to lower the minimum to /23 with the same assessment. Given no 
problems for /23 then a proposal for /24 as a minimum would be made.

Also, an assessment of the number of allocations that are still 
multihomed after 12 months should be made to determine whether there is
any change in status of these end nets.