[Bug 280036] Data corruption over if_ovpn (OpenVPN DCO) observed

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 04 Sep 2024 18:47:07 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280036

--- Comment #15 from Marek Zarychta <zarychtam@plan-b.pwste.edu.pl> ---
(In reply to Kristof Provost from comment #12)
>I still can't reproduce this

A few questions arise: Could the issue described in comment #10 be reproducible
when sendfile(2) uses UFS as a backend? 
Is sendfile(2) on ZFS reliable and safe? AFAIR there were issues with
sendfile(8) and ZFS in the past. 

FWIW: the file I have experimented with seems to be untouched, at least the
checksums of the file and those taken from various historical ZFS snapshots are
the same.

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