IPv4 addresses exhaustion and IPv6
The current infrastructure of the Internet is based on its underlying TCP/IP protocol suite – the Internet Protocol version 4. The IPv4 protocol uses a 32bit address space, which limits the Internet to a possible maximum of 4,294,967,296 (2^32) unique addresses, for connected systems, servers or routers. The next-generation protocol IPv6 introduces extended functionality and a 128bit address space, or 340,282,366,920,938,463,463,374,607,431,768,211,456 (2^128) unique addresses.
• IPv4 addresses exhausted - In February 2011, the Internet Assigned Numbers Authority (IANA) announced the exhaustion of the primary IPv4 address pool. The rapid growth of global Internet users and an increasing need for unique IP addresses exhausted the address space about 30 years after the standardization of IPv4 in 1981
• IPv6 for compliance - Some governments started to require IPv6 compliance for any new systems connected to their networks. For example, the US Government requires IPv6 with their recent USGv6 standard by the National Institute of Standards and Technology (NIST).
Solving the IPv6 Migration Problem
Many businesses are facing the problem of migrating their networks and solutions to IPv6. The common approach of running “dual-stack”
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