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[GH-ISSUE #80] TCP or UDP? Why not both? #31

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opened 2026-03-13 15:26:35 +03:00 by kerem · 2 comments
kerem commented 2026-03-13 15:26:35 +03:00
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Originally created by @Ajedi32 on GitHub (May 6, 2018).
Original GitHub issue: https://github.com/acme-dns/acme-dns/issues/80

acme-dns has a config option that lets you choose whether to serve DNS requests over UDP or over TCP.

However, RFC7766 requires that:

All general-purpose DNS implementations MUST support both UDP and TCP transport.

And unfortunately, "both" doesn't seem to be an option.

Originally created by @Ajedi32 on GitHub (May 6, 2018). Original GitHub issue: https://github.com/acme-dns/acme-dns/issues/80 acme-dns has a config option that lets you choose whether to serve DNS requests over UDP or over TCP. However, [RFC7766 requires that](https://tools.ietf.org/html/rfc7766#section-5): > All general-purpose DNS implementations MUST support both UDP and TCP transport. And unfortunately, "both" doesn't seem to be an option.
kerem 2026-03-13 15:26:35 +03:00
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kerem commented 2026-03-13 15:26:59 +03:00
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@joohoi commented on GitHub (May 14, 2018):

Thanks for opening the issue, you are right and this should get fixed.

<!-- gh-comment-id:388773691 --> @joohoi commented on GitHub (May 14, 2018): Thanks for opening the issue, you are right and this should get fixed.
kerem commented 2026-03-13 15:27:04 +03:00
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@joohoi commented on GitHub (Dec 13, 2018):

Aaaand it's finally fixed.

<!-- gh-comment-id:446915236 --> @joohoi commented on GitHub (Dec 13, 2018): Aaaand it's finally fixed.
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