fix: allow underscores during IDNA conversion#137
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natesales merged 3 commits intonatesales:mainfrom Oct 28, 2025
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Domains may contain underscores, e.g., _acme-challenge.cloudflare.com.
Previously, querying such domains (e.g.,
q @8.8.8.8 _acme-challenge.cloudflare.com)would fail with "idna toascii: idna: disallowed rune U+005F".
This patch handles underscores to prevent IDNA conversion errors.