BDDC is now hosted on Github! get updates there or fork the source there: http://github.com/flowolf/bddc
The source code here is no longer updated...
bddc is a bash script that keeps track of your dynamic IP-address. it offers different options to retrieve te current external IP, such as reading it from ifconfig, a remote website or a local router. update IP with afraid.org, dyndns.org and no-ip.com
Thanks for Bddc, it's great!