[17215] in North American Network Operators' Group
Re: Why does Sprint have address filters again?
daemon@ATHENA.MIT.EDU (Karl Denninger)
Wed May 27 21:18:19 1998
Date: Wed, 27 May 1998 20:08:57 -0500
From: Karl Denninger <karl@mcs.net>
To: Sean Donelan <SEAN@SDG.DRA.COM>
Cc: nanog@merit.edu, arin-council@arin.net
In-Reply-To: <980527180840.aabe@SDG.DRA.COM>; from Sean Donelan on Wed, May 27, 1998 at 06:08:40PM -0500
On Wed, May 27, 1998 at 06:08:40PM -0500, Sean Donelan wrote:
> For some unknown reason, although IHETS has been allocated the entire
> traditional class B 165.138.0.0, they are announcing it as a partial
> 165.138.0.0/20. They could announce the entire /16. But they've chosen
> not too. If IHETS wants to ensure they can reach as much as the Internet
> as possible, they could follow Sprint's filtering policy, and announce
> their network as a 165.138.0.0/16. IHET could check
> http://www.sprint.net/filter.htm for a description of the policy.
>
> Since IHETS seems to be a SPRINT customer, I sure would appreciate it
> if the SPRINT NOC could explain to IHETS why such address filters exist,
> and if Sprint thinks its a good idea to apply them to other ISPs, why
> the reciprocal argument would also be true.
> --
> Sean Donelan, Data Research Associates, Inc, St. Louis, MO
> Affiliation given for identification not representation
It is also fascinating that Sprint's argument for their filtering (per their
web page) is that ARIN has espoused this as a "proper" thing to do. They
even provide a web reference to ARIN's statements in this matter.
I have to ask what in the dickens ARIN thinks it is doing advocating *policy*
on address filtering for ISPs, how this squares with ARIN's 501c(6) status,
and how this can be justified, particularly when it shows up referenced like
this as a "business justification".
This polciy CERTAINLY has nothing to do with route table size, and wouldn't
if it was enforced at the /19 level across the board.
So just what is Sprint's, and ARIN's, justification for those *policy*
statements?
And does anyone on NANOG have other references to ISPs who *also* have
picked up on this "suggestion" and have implemented something similar?
[This is a request as an ARIN AC member, who has tried to get a lot of
these kinds of questions answered from officers and trustees of ARIN]
CC: arin-council@arin.net
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