nsupdate.info DDNS update script for asuswrt-merlin

ddns-start.sh

#!/usr/bin/env sh
# nsupdate.info DDNS update script for asuswrt-merlin
# See
# https://github.com/RMerl/asuswrt-merlin/wiki/Custom-DDNS
# http://nsupdateinfo.readthedocs.io/en/
# Location:  /jffs/scripts/ddns-start

DOMAIN="domain.nsupdate.info"
TOKEN="token"

ACTUAL_IP=${1}

CURRENT_DDNS_IP=$(curl -s https://ipv4.nsupdate.info/myip)
UPDATE_COMMAND="curl -s --user $DOMAIN:$TOKEN --basic https://ipv4.nsupdate.info/nic/update?myip=$ACTUAL_IP"


if [ $ACTUAL_IP != $CURRENT_DDNS_IP ]; then
        echo "Updating $DOMAIN from $CURRENT_DDNS_IP to $ACTUAL_IP"
        eval $UPDATE_COMMAND
        /sbin/ddns_custom_updated 1
fi