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authorBill Nottingham <notting@redhat.com>2002-03-11 22:10:08 +0000
committerBill Nottingham <notting@redhat.com>2002-03-11 22:10:08 +0000
commit83c5f7d06c0bcb45a71c3ccc3f513903d38242c2 (patch)
treebeee53d8b6c6f263afe5e626d00e2fe4f25d6ff4
parent29b25f0b3f86cf0fa72bb1fc24cd99f5b96cd12c (diff)
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initial support for setting source addresses, for LVS
-rw-r--r--sysconfig.txt3
-rwxr-xr-xsysconfig/network-scripts/ifup18
2 files changed, 17 insertions, 4 deletions
diff --git a/sysconfig.txt b/sysconfig.txt
index 85109c7e..0b4b7aef 100644
--- a/sysconfig.txt
+++ b/sysconfig.txt
@@ -455,6 +455,7 @@ Files in /etc/sysconfig/network-scripts/
DEVICE=<name of physical device (except dynamically-allocated PPP
devices where it is the "logical name")>
IPADDR=
+ SRCADDR=
NETMASK=
GATEWAY=
ONBOOT=yes|no
@@ -469,6 +470,8 @@ Files in /etc/sysconfig/network-scripts/
file if PEERDNS is not set to "no".
FIREWALL_MODS=yes|no
modify firewall to attempt to allow DNS through. Defaults to 'yes'.
+ SRCADDR=
+ use the specified source address for outgoing packets
If BOOTPROTO is not "none", then the only other item that
must be set is the DEVICE item; all the rest will be determined
diff --git a/sysconfig/network-scripts/ifup b/sysconfig/network-scripts/ifup
index 012f982e..604757d3 100755
--- a/sysconfig/network-scripts/ifup
+++ b/sysconfig/network-scripts/ifup
@@ -210,13 +210,23 @@ else
else
SCOPE=
fi
-
+
+ if [ -n "$SRCADDR" ]; then
+ SRC="src $SRCADDR"
+ else
+ SRC=
+ fi
+
if ! LC_ALL=C ip addr ls ${REALDEVICE} | grep -q "${IPADDR}/${PREFIX}" ; then
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
# update ARP cache of neighboring computers
arping -q -A -c 1 -I ${REALDEVICE} ${IPADDR}
@@ -225,16 +235,16 @@ else
# Add a route for the subnet. Replace any existing route.
if [ "${ISALIAS}" = no ]; then
- ip route replace ${NETWORK}/${PREFIX} dev ${REALDEVICE}
+ ip route replace ${NETWORK}/${PREFIX} ${SRC} dev ${REALDEVICE}
fi
# Set a default route.
if [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${REALDEVICE}" ]; then
# set up default gateway
if [ -n "${GATEWAY}" -a "`ipcalc --network ${GATEWAY} ${NETMASK} 2>/dev/null`" = "NETWORK=${NETWORK}" ]; then
- ip route add default via ${GATEWAY}
+ ip route add default via ${GATEWAY} ${SRC}
elif [ "${GATEWAYDEV}" = "${DEVICE}" ]; then
- ip route add default dev ${REALDEVICE}
+ ip route add default ${SRC} dev ${REALDEVICE}
fi
fi
fi