> On Oct 9, 2021, at 10:37 AM, Masataka Ohta <mo...@necom830.hpcl.titech.ac.jp> > wrote: > It may be that facebook uses all the four name server IP addresses > in each edge node. But, it effectively kills essential redundancy > of DNS to have two or more name servers (at separate locations) > and the natural consequence is, as you can see, mass disaster.
Yep. I think we even had a NANOG talk on exactly that specific topic a long time ago. https://www.pch.net/resources/Papers/dns-service-architecture/dns-service-architecture-v10.pdf -Bill
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