IPv4 and IPv6

noun · network addressing · element 82 of 117

The two versions of the Internet Protocol's addressing: IPv4's 32-bit addresses are running out, IPv6's 128-bit addresses are not.

My levelProficientComfortable in production. I ship with it without supervision.
In my work since
2017
Family
Engineering

What is IPv4 and IPv6?

Every device on a network needs an IP address. IPv4, from 1981, has about 4.3 billion addresses, which ran out years ago and survive through tricks like NAT. IPv6 uses 128-bit addresses, enough that scarcity stops being a design constraint.

Most networks now run both, which is why IP address management is a product category of its own.

How I use IPv4 and IPv6

At Bizzolutions, a London secure software company, IPv4 and IPv6 were part of the work on secure applications and site configurations for UK cyber security clients.

Where I have used itIPv4 and IPv6 by company and year, from the projects on this site and the rest of my career.
  1. BizzolutionsSecure development · 2017 to 2019Secure developmentBizzolutions · 2017 to 2019