[Bug 291420] [epair] Bad UDP packet checksum with epair(4) and txcsum enabled

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From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 05 Dec 2025 22:54:15 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291420

--- Comment #5 from Dmitry Lukhtionov <dmitryluhtionov@gmail.com> ---
(In reply to Michael Tuexen from comment #4)
TCP work fine. Problem only with UDP.


I can only do the experiment on Monday, otherwise I might lose access to the
hardware.

This configuration worked fine on the September build FreeBSD 14.3-STABLE
without any changes.

It was only when I updated to the December build that problems appeared.

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