Allgemein

How CNAME Ordering in RFC Specs Caused Cloudflare 1.1.1.1 Outage

How CNAME Ordering in RFC Specs Caused Cloudflare 1.1.1.1 Outage

In a recent article titled “What came first- the CNAME or the A record?” Cloudflare explains how an unclear RFC specification caused the popular Cloudflare’s 1.1.1.1 service to break. After identifying the breakage and the ambiguity in older DNS standards regarding record order, Cloudflare proposes a clarified specification.

By Renato Losio