[188150] in North American Network Operators' Group

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RE: Facebook & Traceroute

daemon@ATHENA.MIT.EDU (Sam Norris)
Wed Mar 9 23:22:06 2016

X-Original-To: nanog@nanog.org
From: "Sam Norris" <Sam@SanDiegoBroadband.com>
To: "'Christopher Morrow'" <morrowc.lists@gmail.com>
In-Reply-To: <CAL9jLaZwVgxQ9A7AkEUF3UMi6LUBGdyb4P-rchTbuDN0BO7dpQ@mail.gmail.com>
Date: Wed, 9 Mar 2016 20:22:01 -0800
Cc: 'nanog list' <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org

> maybe their loadbalancer is a little wonky? (I don't see this in
> traceroutes from a few places, but I also don't end up at IAD for
> 'www.facebook.com' traceroutes... here's my last 4 hops though to the
> dest-ip you had:
>=20
> .13.28.75)  0.597 ms ae0.dr08.ash2.tfbnw.net (31.13.26.235)  0.576 ms
>  8  * * *
>  9  * * *
> 10  * * *
> 11  edge-star-mini-shv-07-ash4.facebook.com (66.220.156.68)  0.774 ms
> 0.755 ms  0.701 ms

This is probably because you are properly filtering your own prefixes =
from being sourced outside coming in?


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