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-rw-r--r--Documentation/filesystems/nfs/nfsroot.txt11
1 files changed, 7 insertions, 4 deletions
diff --git a/Documentation/filesystems/nfs/nfsroot.txt b/Documentation/filesystems/nfs/nfsroot.txt
index 5efae00f6c7f..1513e5d663fd 100644
--- a/Documentation/filesystems/nfs/nfsroot.txt
+++ b/Documentation/filesystems/nfs/nfsroot.txt
@@ -123,10 +123,13 @@ ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>:
Default: Determined using autoconfiguration.
- <hostname> Name of the client. May be supplied by autoconfiguration,
- but its absence will not trigger autoconfiguration.
- If specified and DHCP is used, the user provided hostname will
- be carried in the DHCP request to hopefully update DNS record.
+ <hostname> Name of the client. If a '.' character is present, anything
+ before the first '.' is used as the client's hostname, and anything
+ after it is used as its NIS domain name. May be supplied by
+ autoconfiguration, but its absence will not trigger autoconfiguration.
+ If specified and DHCP is used, the user-provided hostname (and NIS
+ domain name, if present) will be carried in the DHCP request; this
+ may cause a DNS record to be created or updated for the client.
Default: Client IP address is used in ASCII notation.