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From: Gordon Bergling <gbe@FreeBSD.org>
Date: Fri, 17 Jul 2020 21:55:25 +0000 (UTC)
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Subject: svn commit: r363288 - head/sbin/mount_nfs
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Author: gbe (doc committer)
Date: Fri Jul 17 21:55:24 2020
New Revision: 363288
URL: https://svnweb.freebsd.org/changeset/base/363288

Log:
  mount_nfs(8): document alternate form of the gssname option
  
  PR:		238506
  Submitted by:	Greg Veldman <freebsd at gregv dot net>
  Reviewed by:	0mp, bcr (mentor)
  Approved by:	bcr (mentor)
  MFC after:	1 week
  Differential Revision:	https://reviews.freebsd.org/D25667

Modified:
  head/sbin/mount_nfs/mount_nfs.8

Modified: head/sbin/mount_nfs/mount_nfs.8
==============================================================================
--- head/sbin/mount_nfs/mount_nfs.8	Fri Jul 17 21:47:06 2020	(r363287)
+++ head/sbin/mount_nfs/mount_nfs.8	Fri Jul 17 21:55:24 2020	(r363288)
@@ -159,7 +159,16 @@ should be specified without instance or domain and is 
 .Dq "host" ,
 .Dq "nfs"
 or
-.Dq "root" .
+.Dq "root" ,
+although the form
+.Sm off
+.Aq Ar service
+@
+.Aq Ar fqdn
+.Sm on
+can also be used if the local system's
+.Xr gethostname 3
+value does not match the host-based principal in the keytab.
 .It Cm hard
 Same as not specifying
 .Cm soft .