RPSL support for 32 bit ASN

RPSL list,

RFC2622 and 4012 say:

  <as-number> An AS number x is represented as the string "ASx".  That
      is, the AS 226 is represented as AS226.

This was written assuming 16 bit (0-65536) AS numbers (ASN16).  There is
now a draft to expand the AS number space to 32 bits (ASN32, see
draft-ietf-idr-as4bytes-12.txt) as well as proposals in the various
regions to start deploying those (RIPE2005-08, ARIN 2005-9, APNIC 032-v2
and others) as of January 2007. Draft
draft-michaelson-4byte-as-representation-01.txt suggests that ASN are
written as:

  <16 msb in decimal>.<16 lsb in decimal>

with the first part dropped for values <65536.  (In other words, the AS
are labelled 0, 1, 2, .... 65534, 65535, 1.0, 1.1, 1.2 ... 1.65535, 2.0).
I can imagine that people will want to use 32 bit ASN in RPSL starting
1/2007.

Question: How to adapt RPSL for this?

Solutions:

1) Change the definition in RFC2622 to

  <as-number> An AS number x is represented as the string "AS[0-9]+
   or AS[0-9]+.[0-9]+.  (In other words, follow the Michealson draft).

2) Other?  If so, what?

I guess in all cases, implementors will have to check that their
implementations can deal with ASN >65535.

Is there a WG where we can submit a draft with these extensions?

Henk

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