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A root-server at the Internet’s core lost touch with its peers. We still don’t know why. | Ars Technica

arstechnica.com/security/2024/05/dns-glitch-that-threatened-internet-stability-fixed-cause-remains-unclear

What Jamie wrote

Few folks know how DNS works — the system that turns something like www.thingelstad.com into an address that your computer understands. Even folks that know how DNS works may not know the role of root-servers. They resolve the root name of ".", that is core to any of name resolution working. So it is a big deal if one of them gets confused.