Update for better script method

wizard/scripts/update_hairpin_nat.sh

@@ -1,26 +1,23 @@
 #!/bin/vbash
 source /opt/vyatta/etc/functions/script-template
 
-# create copies of config for modification and backup
+# get current public IP
-cp /config/config.boot /config/config.new
+NEW_IP=$(show interfaces pppoe pppoe1 | grep "inet\s" | cut -d ' ' -f 6)
-cp /config/config.boot /config/backups/config.bk-$(date +%Y-%m-%d)
+# get old public IP
+OLD_IP=$(show nat destination rules | grep 1100 | head -1 | tr -s ' ' | cut -d' ' -f 3)
+
+
+show configuration commands | grep $OLD_IP | sed --expression="s/$OLD_IP/$NEW_IP/" > ipupdate.tmp
 
-# switch mode to config
 configure
 
-# get current public IP
+source ipupdate.tmp
-NEW_IP=$(run show interfaces pppoe pppoe1 | grep "inet\s" | cut -d ' ' -f 6)
-# get old public IP
-OLD_IP=$(run show nat destination rules | grep 1100 | head -1 | tr -s ' ' | cut -d' ' -f 3)
 
-# edit the config.new file
-sed -i "s/$OLD_IP/$NEW_IP/" /config/config.new
-
-# apply the new config
-load /config/config.new
 { # try commit, save, exit
     commit && save && exit
 } || { # catch, exit discard and create a very basic error file
     exit discard
     echo "Script failed. Write some real error handling."
 }
+
+rm ipupdate.tmp