nanog mailing list archives
Re: DNS pulling BGP routes?
From: Michael Thomas <mike () mtcc com>
Date: Wed, 6 Oct 2021 15:37:54 -0700
On 10/6/21 3:33 PM, Jon Lewis wrote:
Maybe the problem here is that two things happened and the article conflated the two: the DNS infrastructure pulled its routes from the anycast address and something else pulled all of the other routes but wasn't mentioned in the article.On Wed, 6 Oct 2021, Michael Thomas wrote:People have been anycasting DNS server IPs for years (decades?). So, no.But it wasn't just their DNS subnets that were pulled, I thought. I'm obviously really confused. Anycast to a DNS server makes sense that they'd pull out if they couldn't contact the backend. But I thought that almost all of their routes to the backend were pulled? That is, the DFZ was emptied of FB routes.Well, as someone else said, DNS wasn't the problem...it was just one of the more noticeable casualties. Whatever they did broke the network rather completely, and that took out all of their DNS, which broke lots of other things that depend on DNS.
Mike
Current thread:
- Re: DNS pulling BGP routes?, (continued)
- Re: DNS pulling BGP routes? Jon Lewis (Oct 06)
- Re: DNS pulling BGP routes? Hank Nussbacher (Oct 06)
- Re: DNS pulling BGP routes? Mark Tinka (Oct 06)
- RE: DNS pulling BGP routes? Jean St-Laurent via NANOG (Oct 07)
- Re: DNS pulling BGP routes? Mark Tinka (Oct 07)
- Re: DNS pulling BGP routes? William Herrin (Oct 06)
- Re: DNS pulling BGP routes? Michael Thomas (Oct 06)
- Re: DNS pulling BGP routes? Jon Lewis (Oct 06)
- Re: DNS pulling BGP routes? Michael Thomas (Oct 06)
- Re: DNS pulling BGP routes? Jon Lewis (Oct 06)
- Re: DNS pulling BGP routes? Michael Thomas (Oct 06)
- Re: DNS pulling BGP routes? Jon Lewis (Oct 06)
- Re: DNS pulling BGP routes? Mark Tinka (Oct 06)
- Re: DNS pulling BGP routes? Mark Tinka (Oct 06)
- Re: Facebook post-mortems... Hank Nussbacher (Oct 05)
- Re: Facebook post-mortems... Mark Tinka (Oct 05)
- Re: Facebook post-mortems... Masataka Ohta (Oct 06)
- Re: Facebook post-mortems... Michael Thomas (Oct 05)
- Re: Facebook post-mortems... Mel Beckman (Oct 04)
- Re: Facebook post-mortems... Patrick W. Gilmore (Oct 04)