Facebook & Traceroute

[morrowc.lists at gmail.com (Christopher Morrow)]

On Wed, Mar 9, 2016 at 11:22 PM, Sam Norris <Sam at 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.