IP addressing is the medium that connects computers, servers and devices on the Internet, so they can provide the online services we have grown to depend on. The Internet’s communication protocol has worked very well for over 20 years, but the Internet is very different today. With the explosion of mobile and cloud technology, and the computerisation of machines, such as appliances, cameras, and cars, we now have a world of “smart” objects operating in mobile and virtual or cloud-based networks.