[89656] in North American Network Operators' Group
Re: Have Yahoo! gone pink?
daemon@ATHENA.MIT.EDU (Jon Lewis)
Wed Mar 29 17:51:40 2006
Date: Wed, 29 Mar 2006 17:51:11 -0500 (EST)
From: Jon Lewis <jlewis@lewis.org>
To: Valdis.Kletnieks@vt.edu
Cc: nanog@nanog.org
In-Reply-To: <200603292155.k2TLtNhF007209@turing-police.cc.vt.edu>
Errors-To: owner-nanog@merit.edu
On Wed, 29 Mar 2006 Valdis.Kletnieks@vt.edu wrote:
> Received: from EXCHG01-DUB.Europe.Search.Corpsys.P4pnet.net
> (cluster01-dub.europe.search.corpsys.p4pnet.net [172.30.132.19])
> by mrout3.yahoo.com (8.13.4/8.13.4/y.out) with ESMTP id k2FIupeH049008;
> Wed, 15 Mar 2006 10:56:52 -0800 (PST)
>
> Hey, what do you know... if you trust both uksolutions.net and yahoo.com's
> Received: lines, it didn't originate at Yahoo - it came from p4pnet.net. ;)
>
> (A fine demonstration of the difference between being truthful and being
> helpful :)
Only problem with that is 172.30.132.19 is part of
NetRange: 172.16.0.0 - 172.31.255.255
CIDR: 172.16.0.0/12
NetName: IANA-BBLK-RESERVED
So even if you did trust that Received line, it still had to come from
inside yahoo.com (unless someone briefly announced some of 172.16.0.0/12
and yahoo both accepted the route and relayed for it).
AFAIK, from other lists, Yahoo is aware of this screwup (disclaiming
responsibility for 216.145.48.0/20) and is working on it.
----------------------------------------------------------------------
Jon Lewis | I route
Senior Network Engineer | therefore you are
Atlantic Net |
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