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authorBill Nottingham <notting@redhat.com>2010-11-30 21:53:02 -0500
committerBill Nottingham <notting@redhat.com>2010-11-30 21:53:02 -0500
commitff5befb95b133cc1da3f32ffcd9f3cef779244b6 (patch)
treec2f360e405892a0add6ac011917d96c3fe2374aa /sysconfig/network-scripts/ifup-eth
parentd624aba089bd95acfe8f02bebb01c34a4f242216 (diff)
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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.
Diffstat (limited to 'sysconfig/network-scripts/ifup-eth')
-rwxr-xr-xsysconfig/network-scripts/ifup-eth53
1 files changed, 31 insertions, 22 deletions
diff --git a/sysconfig/network-scripts/ifup-eth b/sysconfig/network-scripts/ifup-eth
index cae00783..dd9fb5ea 100755
--- a/sysconfig/network-scripts/ifup-eth
+++ b/sysconfig/network-scripts/ifup-eth
@@ -1,6 +1,6 @@
#!/bin/bash
# Network Interface Configuration System
-# Copyright (c) 1996-2009 Red Hat, Inc. all rights reserved.
+# Copyright (c) 1996-2010 Red Hat, Inc. all rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2,
@@ -214,7 +214,7 @@ else
else
expand_config
-
+
[ -n "${ARP}" ] && \
ip link set dev ${REALDEVICE} $(toggle_value arp $ARP)
@@ -241,27 +241,36 @@ else
SRC=
fi
- if [ "${REALDEVICE}" != "lo" ]; then
- if ! LC_ALL=C ip addr ls ${REALDEVICE} | LC_ALL=C grep -q "${IPADDR}/${PREFIX}" ; then
- if ! /sbin/arping -q -c 2 -w 3 -D -I ${REALDEVICE} ${IPADDR} ; then
- echo $"Error, some other host already uses address ${IPADDR}."
- exit 1
- fi
- if ! ip addr add ${IPADDR}/${PREFIX} \
- brd ${BROADCAST:-+} dev ${REALDEVICE} ${SCOPE} label ${DEVICE}; then
- echo $"Error adding address ${IPADDR} for ${DEVICE}."
- fi
- fi
-
- if [ -n "$SRCADDR" ]; then
- sysctl -w "net.ipv4.conf.${REALDEVICE}.arp_filter=1" >/dev/null 2>&1
- fi
+ # set IP address(es)
+ for idx in {0..256} ; do
+ if [ -z "${ipaddr[$idx]}" ]; then
+ break
+ fi
- # update ARP cache of neighboring computers
- /sbin/arping -q -A -c 1 -I ${REALDEVICE} ${IPADDR}
- ( sleep 2;
- /sbin/arping -q -U -c 1 -I ${REALDEVICE} ${IPADDR} ) > /dev/null 2>&1 < /dev/null &
- fi
+ if ! LC_ALL=C ip addr ls ${REALDEVICE} | LC_ALL=C grep -q "${ipaddr[$idx]}/${prefix[$idx]}" ; then
+ [ "${REALDEVICE}" != "lo" ] && \
+ if ! /sbin/arping -q -c 2 -w 3 -D -I ${REALDEVICE} ${ipaddr[$idx]} ; then
+ echo $"Error, some other host already uses address ${ipaddr[$idx]}."
+ exit 1
+ fi
+
+ if ! ip addr add ${ipaddr[$idx]}/${prefix[$idx]} \
+ brd ${broadcast[$idx]:-+} dev ${REALDEVICE} ${SCOPE} label ${DEVICE}; then
+ echo $"Error adding address ${ipaddr[$idx]} for ${DEVICE}."
+ fi
+ fi
+
+ if [ -n "$SRCADDR" ]; then
+ sysctl -w "net.ipv4.conf.${REALDEVICE}.arp_filter=1" >/dev/null 2>&1
+ fi
+
+ # update ARP cache of neighboring computers
+ if [ "${REALDEVICE}" != "lo" ]; then
+ /sbin/arping -q -A -c 1 -I ${REALDEVICE} ${ipaddr[$idx]}
+ ( sleep 2;
+ /sbin/arping -q -U -c 1 -I ${REALDEVICE} ${ipaddr[$idx]} ) > /dev/null 2>&1 < /dev/null &
+ fi
+ done
# Set a default route.
if [ "${DEFROUTE}" != "no" ] && [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${REALDEVICE}" ]; then