#!/bin/bash
 
IPADDR=`ifconfig -a | grep -A1 ed0 | grep inet | awk '{ print $2 }'`
LASTIP=`nslookup canth.dtdns.net ns1.darktech.org | grep -A1 canth |
grep Address | awk '{
print $2 }'`
 
echo -n "`date` - "
 
if [ "$IPADDR" != "$LASTIP" ]; then
  echo -e "GET /api/autodns.cfm?id=canth&pw=xxxxxxx&client=BSD
HTTP/1.1\nHost: www.dtdns.com\nUser-Agent: bash\n\n" | \
            nc www.dtdns.com 80 > /dev/null 2>&1
  echo "Posted IP change from $LASTIP to $IPADDR"
else
  echo "IP still $IPADDR"
fi