[Outages-discussion] [outages] Facebook.com no records?

[Leato, Gary]

Thanks for the clarification Ross. Seems I and lots of others jumped the gun to a total bgp peer offline, when in actuality it does seem that there was alot of route announcements and withdrawals directly preceding the outage start.

Interesting to know about the nsa and nsb hosts though..... will definitely be interesting to see how this all shakes out and how the pieces fit together.

-----Original Message-----
From: Ross Halliday <ross.halliday at wtccommunications.ca>
Sent: Monday, October 4, 2021 1:22 PM
To: Leato, Gary <gleato at advance-trading.com>; outages-discussion at outages.org
Subject: Re: [Outages-discussion] [outages] Facebook.com no records?

> The dns issues at hand are a symptom of the larger issues. Facebook's bgp peerings have disappeared globally.


Perhaps in some parts of the world, however AS32934 is still up over TorIX (Toronto, CA) and even announcing 129.134.0.0/17, where a.ns.facebook.com and b.ns.facbook.com reside (129.134.30.12 and 129.134.31.12, respectively). Traces to UDP/53 die within FB's network, so the problem is further inward


- Ross


-----Original Message-----
From: Outages-discussion <outages-discussion-bounces at outages.org> On Behalf Of Leato, Gary
Sent: October 4, 2021 1:07 PM
To: outages-discussion at outages.org
Subject: [EXTERNAL] Re: [Outages-discussion] [outages] Facebook.com no records?

Moving this to discussion group.

The dns issues at hand are a symptom of the larger issues. Facebook's bgp peerings have disappeared globally.

The current working theory is that a well meaning but misguided automated process removed all of the nameserv records from dns once the servers were no longer reachable due to the bgp issues.

This is not going to be a quick recovery, especially by facebook standards.




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