IPv4 is the common thread that has held the internet together since its very early years, and, thus, it is both the most
important and most widely deployed networking protocol in existence. As the world rapidly runs out of available IPv4 address space, there has been a major movement to transition the internet to the IPv6 protocol with its vastly larger address space.
The global internet community has shown a huge level of collaborative effort in driving this transition. Events like World IPv6 Day and World IPv6 Launch Day brought together organizations working across all levels of network connectivity to raise awareness of the ever-increasing need for this change. Held on Feb. 11, 2011, World IPv6 Day marked the beginning of the changeover process. Since then, IPv6 adoption has been a closely watched and increasingly important metric.
