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Re: Query: What policies do backbone providers use to determine IP ownership?
From: <jlewis () lewis org>
Date: Wed, 23 May 2001 22:30:41 -0400 (EDT)

On Wed, 23 May 2001, Tony Mumm wrote:

I've seen a trend lately where I'm finding out, after the fact,
where pieces of larger CIDR blocks are being taken apart by a
myriad of unaggregated routes.   The other backbone providers
freely allowed an announcement of that non-portable space to the
Internet without regard to either the owning provider, or to
general Internet routing.

Here's a related question.  Suppose provider A has a customer C who
multihomes with a connection to A and provider B.  C uses IP's assigned by
A.  C terminates service with A...but keeps announcing A's space to B.  B
propogates the routes to their peers.  B and C ignore requests that they
stop using A's space and renumber into B's.  How does A reclaim their

One obvious solution is dueling routes...A could announce more specific
routes, fouling things up for B and C hoping this will serve as
encouragement for C to renumber.

 Jon Lewis *jlewis () lewis org*|  I route
 System Administrator        |  therefore you are
 Atlantic Net                |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________

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