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====== Determine external IP for all MultiWAN interfaces and log to file ======

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This script will discover the WAN IP of all WAN interfaces in a MultiWAN configuration and log them in the file: "/tmp/WAN-IPs" :\\ \\ \\

<code ->
#!/bin/sh
WAN="$(nvram get wan_ifname)"
WAN2="$(nvram get wan2_ifname)"
WAN3="$(nvram get wan3_ifname)"
WAN4="$(nvram get wan4_ifname)"

if [ "$WAN" != "" ]
  then
   if [ "$(ifconfig $WAN | grep -q UP; echo $?)" == "0" ]
    then
      echo "WAN IP address: $(curl -s --interface $WAN http://ipinfo.io/ip)"> /tmp/WAN-IPs
    else
      echo "WAN IP address: DOWN"> /tmp/WAN-IPs
   fi
fi

if [ "$WAN2" != "" ]
  then
   if [ "$(ifconfig $WAN2 | grep -q UP; echo $?)" == "0" ]
    then
      echo "WAN2 IP address: $(curl -s --interface $WAN2 http://ipinfo.io/ip)">> /tmp/WAN-IPs
    else
      echo "WAN2 IP address: DOWN">> /tmp/WAN-IPs
   fi
fi

if [ "$WAN3" != "" ]
  then
   if [ "$(ifconfig $WAN3 | grep -q UP; echo $?)" == "0" ]
    then
      echo "WAN3 IP address: $(curl -s --interface $WAN3 http://ipinfo.io/ip)">> /tmp/WAN-IPs
    else
      echo "WAN3 IP address: DOWN">> /tmp/WAN-IPs
   fi
fi

if [ "$WAN4" != "" ]
  then
   if [ "$(ifconfig $WAN4 | grep -q UP; echo $?)" == "0" ]
    then
      echo "WAN4 IP address: $(curl -s --interface $WAN4 http://ipinfo.io/ip)">> /tmp/WAN-IPs
    else
      echo "WAN4 IP address: DOWN">> /tmp/WAN-IPs
   fi
fi
</code>

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