Ddclient not auto updating
Most of the time this is all you will need to do for the utility to function correctly.Cron is the automatic task scheduler for Linux systems.(You may need to add the Ubuntu Universe to your set of software repositories to install some of these utilities.See Installing Software.) ddclient is the original Linux utility for dynamic DNS updates.Every computer attached to the Internet has an IP address.Name Translation is the process of relating a name (like ' to an IP address (like '74.1') so that a website (or other service) on a computer can be accessed using an easily remembered name, rather than the IP address number of the computer.
If this is the first time you have installed ddclient, you will be prompted by the installation script for the hostname(s) that you registered with Dyn DNS (or other Dynamic DNS service).
It is up to you (using virtual host files or Rewrite rules in the .htaccess files of Apache, for example) if you wish to massage the URL at your server (to change it to a canonical name) or redirect it.