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Re: Have Yahoo! gone pink?

  • From: Jon Lewis
  • Date: Wed Mar 29 17:52:26 2006 
On Wed, 29 Mar 2006 [email protected] 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 |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________