Author: trasz
Date: Sun Mar 19 15:49:51 2017
New Revision: 315560
URL: https://svnweb.freebsd.org/changeset/base/315560

Log:
  Document how to use reroot with NFS.
  
  MFC after:    2 weeks
  Sponsored by: DARPA, AFRL

Modified:
  head/sbin/reboot/reboot.8

Modified: head/sbin/reboot/reboot.8
==============================================================================
--- head/sbin/reboot/reboot.8   Sun Mar 19 15:48:41 2017        (r315559)
+++ head/sbin/reboot/reboot.8   Sun Mar 19 15:49:51 2017        (r315560)
@@ -28,7 +28,7 @@
 .\"    @(#)reboot.8    8.1 (Berkeley) 6/9/93
 .\" $FreeBSD$
 .\"
-.Dd September 10, 2016
+.Dd March 19, 2017
 .Dt REBOOT 8
 .Os
 .Sh NAME
@@ -152,6 +152,13 @@ Replace current root filesystem with UFS
 kenv vfs.root.mountfrom=ufs:/dev/ada0s1a
 reboot -r
 .Ed
+.Pp
+This mechanism can also be used with NFS, with a caveat that
+it only works with NFSv4, and requires a numeric IPv4 address:
+.Bd -literal -offset indent
+kenv vfs.root.mountfrom=nfs:192.168.1.1:/share/name
+reboot -r
+.Ed
 .Sh SEE ALSO
 .Xr kenv 1 ,
 .Xr getutxent 3 ,
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