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This script will discover the WAN IP of each WAN interface in a MultiWAN configuration and log them in /tmp/WAN-IPs.

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#!/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

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