[PATCH] Updates to nfsroot documentation

[Amos Waterland]

The difference between ip=off and ip=::::::off has been a cause of much
confusion.  Document how each behaves, and do not contradict ourselves
by saying that "off" is the default when in fact "any" is the default
and is descibed as being so lower in the file.

Signed-off-by: Amos Waterland <apw@xxxxxxxxxx>

---

 nfsroot.txt |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Documentation/nfsroot.txt b/Documentation/nfsroot.txt
index 16a7cae..ac04a1d 100644
--- a/Documentation/nfsroot.txt
+++ b/Documentation/nfsroot.txt
@@ -92,8 +92,11 @@ ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>
   autoconfiguration.
 
   The <autoconf> parameter can appear alone as the value to the `ip'
-  parameter (without all the ':' characters before) in which case auto-
-  configuration is used.
+  parameter (without all the ':' characters before).  If the value is
+  "ip=off" or "ip=none", no autoconfiguration will take place, otherwise
+  autoconfiguration will take place.  Note that "ip=off" is not the same
+  thing as "ip=::::::off", because in the latter autoconfiguration will take
+  place if any of DHCP, BOOTP or RARP are compiled in the kernel.
 
   <client-ip>	IP address of the client.
 
@@ -142,7 +145,7 @@ ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>
 		into the kernel will be used, regardless of the value of
 		this option.
 
-                  off or none: don't use autoconfiguration (default)
+                  off or none: don't use autoconfiguration
 		  on or any:   use any protocol available in the kernel
 		  dhcp:        use DHCP
 		  bootp:       use BOOTP
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