DNS pulling BGP routes?

Jon Lewis jlewis at lewis.org
Wed Oct 6 22:33:12 UTC 2021

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.

  Jon Lewis, MCP :)           |  I route
  StackPath, Sr. Neteng       |  therefore you are
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________

More information about the NANOG mailing list