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Re: Query: What policies do backbone providers use to determine IP ownership?
From: Omachonu Ogali <missnglnk () informationwave net>
Date: Fri, 25 May 2001 08:47:08 -0400

On Thu, May 24, 2001 at 07:25:14PM -0700, Steve Gibbard wrote:

On Wed, 23 May 2001 jlewis () lewis org wrote:

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.

And then C could announce more specific routes, and so forth, although
you'll run into filters and start being ignored at some point.

That's really the sort of problem better resolved by lawyers than
by engineers.


Steve Gibbard                         scg () gibbard org      

Why go through all that mess? You call up their new upstream, say
you're a representative of XYZ, and customer ABC does not have
permission to announce your netblocks. I know InterNAP requires
that they get consent from the netblock contact, I don't know about
other companies.

And so it doesn't happen as a prank, while on phone with them, tell
the person to send an e-mail to the netblock contact, you open up the
e-mail and read it back to them for verification, it seriously can't
be that complicated. kthkxbye.
Omachonu Ogali
missnglnk () informationwave net

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