Comment by torstenvl

EDIT: Why the drive-by downvotes? If someone thinks I'm wrong, I'm happy to hear why.

> One such implementation that broke is the getaddrinfo function in glibc, which is commonly used on Linux for DNS resolution.

> Most DNS clients don’t have this issue.

The most widespread implementation on the most widespread server operating system has the issue. I'm skeptical of what the author means by "Most DNS clients."

Also, what is the point of deploying to test if you aren't going to test against extremely common scenarios (like getaddrinfo)?

> To prevent any future incidents or confusion, we have written a proposal in the form of an Internet-Draft to be discussed at the IETF. If consensus is reached...

Pretty sure both Hyrum's Law and Postel's Law have reached the point of consensus.

Being conservative in what you emit means following the spec's most conservative interpretation, even if you think the way it's worded gives you some wiggle room. And the fact that your previous implementation did it that way for a decade means people have come to rely on it.