[Bug 270592] nfsv4 /etc/exports with -sec=krb5p gives permission denied

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270592

--- Comment #1 from Rick Macklem <rmacklem@FreeBSD.org> ---
Linux clients love to use krb5i for state
maintenance operations no matter what you
specify.

If you capture packets when the mount is done
and then look at them in wireshark, I'm pretty
sure you'll find it using "integrity" (in the
RPC credential) for RPCs that do stuff like
EXCHANGEID, CREATESESSION, RECLAIM_COMPLETE.

The Linux folk consider this a feature, for
NFSv4.1/4.2 mounts. (A mount with "minorversion=0"
would probably work, but you don't want to
use 4.0 when 4.1/4.2 is supported.)

It just so happens I reported this to
linux-nfs@vger.kernel.org and, if you look
at the reply in the email archive for it,
you'll see they consider it a feature.
(For my case it was sec=krb5, but I think
 you'll find it is the same.)

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