Dynamic DNS with ddclient on Raspberry Pi and Ubuntu
This tutorial will show you how to configure ddclient on Raspbian and Ubuntu. Many tutorials don't explain what to do if your server is behind a router, but this one will. I recently set up a backup server on an internet connection that has a dynamic IP address. So far, I've been spoiled at home because my ISP (PlusNet) makes switching to a static IP address easy and cheap, so obviously I did that. This time though, I didn't have that option, and I didn't want to configure a dynamic dns client on that router either, so I had to set it up on the server itself.