Same as Averageman’s situation,  the external IP of my house is also dynamically allocated. I also need a dynamic DNS.   We use pcDuino as the noip client to report the IP of the house as a regular IP will consume a lot of electricity.

As recommended by Averageman, I sign up for the service at No-IP.com.  Please write down your login credentials (email and password), as they are needed in the later steps.

Install and setup NOIP Client software

Under the home directory ‘home/ubuntu’, we create a directory named noip:

Next, we will download a copy of the NO-IP client source files by typing:

$wget http://www.no-ip.com/client/linux/noip-duc-linux.tar.gz

Extract the downloaded source file ball:

$tar vzxf noip-duc-linux.tar.gz

Compile and install:

It will ask for login credentials during the installation process:

In the final step, it will set the IP address acquired.