From 3a5184c7b3a10b965dc4c8aa112251f8b756da8a Mon Sep 17 00:00:00 2001
From: mitty <mitty@7d2118f6-f56c-43e7-95a2-4bb3031d96e7>
Date: Tue, 7 Jul 2009 14:48:58 +0000
Subject: [PATCH]  * FIX: now the script needs 2nd argument to fix IP address
 of LAN device    * LAN device can be down before the this
 script is invoked

git-svn-id: https://lab.mitty.jp/svn/lab/trunk@19 7d2118f6-f56c-43e7-95a2-4bb3031d96e7
---
 iptables/setlan2wan.sh |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/iptables/setlan2wan.sh b/iptables/setlan2wan.sh
index ac9c617..5594949 100644
--- a/iptables/setlan2wan.sh
+++ b/iptables/setlan2wan.sh
@@ -12,16 +12,14 @@ set -x
 # PHASE  as per MODE, but with finer granularity, distinguishing the pre-
 #        up, post-up, pre-down and post-down phases.
 
-LANIF="${1:?"usage: $0 <LAN_device> "}"
-
-LANIP=`/sbin/ip addr show dev ${LANIF} | grep -w inet | tr -s ' ' | cut -d ' ' -f 3 | cut -d / -f 1`
-LANMASK=`/sbin/ip route show dev ${LANIF} | grep -w ${LANIP} | tr -s ' ' | cut -d ' ' -f 1`
+LANIF="${1:?"usage: $0 <LAN_device> <IPADDR> "}"
+LANIP="${2:?"usage: $0 <LAN_device> <IPADDR> "}"
 
 WANIP=`/sbin/ip addr show dev ${IFACE} | grep -w inet | tr -s ' ' | cut -d ' ' -f 3 | cut -d / -f 1`
 
 if [ "${PHASE}" = "pre-down" ]; then
     # delete rule and exit
-    /sbin/iptables -t nat -D PREROUTING -i ${LANIF} -s ${LANMASK} -d ${WANIP} -j DNAT --to-destination ${LANIP}
+    /sbin/iptables -t nat -D PREROUTING -i ${LANIF} -d ${WANIP} -j DNAT --to-destination ${LANIP}
     echo "remove rule for access to WAN device on router node from LAN clients"
     exit
 fi
@@ -31,7 +29,7 @@ fi
 (
 sleep 60
 
-/sbin/iptables -t nat -A PREROUTING -i ${LANIF} -s ${LANMASK} -d ${WANIP} -j DNAT --to-destination ${LANIP}
+/sbin/iptables -t nat -A PREROUTING -i ${LANIF} -d ${WANIP} -j DNAT --to-destination ${LANIP}
 echo "set rule for access to WAN device on router node from LAN clients"
 
 ) &
-- 
1.7.9.5