nanog mailing list archives

RE: IP4 Space


From: "Thomas Magill" <tmagill () providecommerce com>
Date: Fri, 5 Mar 2010 10:06:53 -0800

According to ARIN, _IF_ you meet their requirements for obtaining an
IPv4
block, then, you ALSO automatically meet their requirements for
obtaining
an IPv6 block.

Thank you for the clarification.  I am obviously in the very early stage
of planning IPv6 for our company with hopes of at least having peers up
this summer after our peak holiday season (mothers day).  I would prefer
to get an ARIN block so that we feel less locked down to a provider by
using their space.  

However, there is a specific block being used to issue ARIN end-user
assignments, and, many ISPs filter that more liberally (/48) than they
filter blocks used for allocation (/32).  As such, your customers who
are
multihomed _MAY_ have a better chance of having their prefix seen if
they use an ARIN direct assignment.

So what seems to be the standard for the longest advertised prefix for
v6 (compared to /24 for v4)?  If I get a /48 from ARIN how many
non-aggregated prefixes should I expect to have?  This sounds like you
are saying /48 is as specific at it would get.



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