IPv6 for Azure Virtual Network is now generally available

Updated: November 04, 2019

Internet Protocol version 6 (IPv6) is an internet standard for communicating between computers. One of its most notable features is the exceptionally large number of IP addresses available using this protocol. The 128-bit addresses are four times the length of IPv4 addresses (32-bit) but provide 3.4×1038addresses—enough for each person on the planet to have billions of addresses to themselves.  

Most regional internet registries exhausted their IPv4 address space as of 2015, so new IPv4 address space is no longer available. As a result, the cost of IPv4 address space continues to climb, and governments and industries—most notably mobile (cellular) and internet-of-things (IoT) markets—are moving to IPv6 for its vastly increased address space (over IPV4) and other features.


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