[188162] in North American Network Operators' Group
Re: Facebook & Traceroute
daemon@ATHENA.MIT.EDU (Christopher Morrow)
Thu Mar 10 10:35:51 2016
X-Original-To: nanog@nanog.org
In-Reply-To: <095f01d17a84$66cb8260$34628720$@SanDiegoBroadband.com>
Date: Thu, 10 Mar 2016 10:35:15 -0500
From: Christopher Morrow <morrowc.lists@gmail.com>
To: Sam Norris <Sam@sandiegobroadband.com>
Cc: nanog list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On Wed, Mar 9, 2016 at 11:22 PM, Sam Norris <Sam@sandiegobroadband.com> wrote:
>> 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:
>>
>> .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?
>
unclear, that traceroute was from someplace I don't own the network for...
from another place I do though...
5 ae0.dr07.ash2.tfbnw.net (31.13.26.233) 4 ms
ae0.dr05.ash3.tfbnw.net (31.13.29.21) 4 ms ae0.dr08.ash2.tfbnw.net
(31.13.26.235) 2 ms
6 * * *
7 * * *
8 * * *
9 edge-star-mini-shv-07-ash4.facebook.com (66.220.156.68) 3 ms 3 ms 2 ms
same-ish results, no spoofed bits.
