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

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From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 13 Dec 2025 21:30:00 UTC

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

--- Comment #24 from leper <leper4@protonmail.com> ---
In the test with the few applied patches for txcsum support for tap/bhyve on
14-stable I manually changed that, yes.

In the 15.0-RELEASE variant (which the network configuration is from) I also
manually changed that, but given it lacks the txcsum patches there was no
change. I'll try to test on this configuration with those txcsum patches too.

If the jail's bridge turns of txsum then somehow that does not seem to
propagate via the epair to the host's bridge however.

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