Once you have set up your Raspberry Pi chances are that you want to access it from remote machine or host a little web site on it. The problem is that your provider usually gives you a dynamic IP, which changes every time you connect to the Internet. In Germany most (A|V)DSL provider reset your connection every 24h. The solution for this is a dynamic DNS (DDNS), which automatically updates the name server in the Domain Name System (DNS).
