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> And in fact, the glibc resolver (and I bet also other major implementations) does send such queries to the DNS server.

Using the glibc resolver as baseline is a bad idea, it’s broken beyond hope.

Try resolving http://-emmawatson.tumblr.com/, which is a valid URL under newer standards, and works on all other systems. The Glibc authors refuse to merge patches fixing this, because they disagree with the standard.



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