From c93923134c5e1dc5536caeea64a74329bfb69c7e Mon Sep 17 00:00:00 2001
From: Bill Nottingham <notting@redhat.com>
Date: Tue, 30 Nov 2010 21:53:02 -0500
Subject: Support multiple IP addreses via IPADDRn, PREFIXn (or NETMASKn)
 (#633984) Adapted from <jklimes@redhat.com>

In addition to legacy IP aliases, this commit adds a support for configuring
mupliple IPs via single ifcfg file. It uses the same syntax and behaviour as
NetworkManager.
---
 sysconfig.txt | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

(limited to 'sysconfig.txt')

diff --git a/sysconfig.txt b/sysconfig.txt
index e3486bbf..ea4e9740 100644
--- a/sysconfig.txt
+++ b/sysconfig.txt
@@ -511,8 +511,18 @@ Files in /etc/sysconfig/network-scripts/
       Most important for PPP.  Only used in front ends.
     DEVICE=<name of physical device (except dynamically-allocated PPP
       devices where it is the "logical name")>
-    IPADDR=
-    NETMASK=
+    IPADDRn=
+    PREFIXn=
+      Network prefix.  It is used for all configurations except aliases
+      and ippp devices.  It takes precedence over NETMASK when both
+      PREFIX and NETMASK are set.
+    NETMASKn=
+      Subnet mask; just useful for aliases and ippp devices.  For all other
+      configurations, use PREFIX instead.
+
+    The "n" is expected to be consecutive positive integers starting from 0.
+    It can be omitted if there is only one address being configured.
+
     GATEWAY=
     METRIC=
       Metric for the default route using GATEWAY
@@ -928,8 +938,8 @@ Files in /etc/sysconfig/network-scripts/
     NETMASKn=<network/prefix mask>
     GATEWAYn=<next-hop router/gateway IP address>
 
-  The "n" can be any integer number, but is expected to be consecutive
-  positive integers starting from 0. For example:
+  The "n" is expected to be consecutive positive integers starting from 0.
+  For example:
 
     ADDRESS0=192.168.2.0
     NETMASK0=255.255.255.0
-- 
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