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A comment on What came first: the CNAME or the A record?. Parent comment

Re:What came first: the CNAME or the A record? by account42 on Tuesday January 20, 2026 @04:00AM (#46689570)
> other than unit tests (which obviously wouldn't catch this unless they were explicitly written for this case)

They absolutely should have unit tests that detect any change in output and manually review those changes for an operation of this size.

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