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IPv6 - Why we need new Internet Protocol

Explosive growth of internet users, devices, apps creates demand for more IP addresses

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Why do we need IPv6?

In a word: Growth. The number of internet-connected users, devices and applications are growing at such a rapid clip that the pool of available addresses for the original version of the Internet Protocol, known as IPv4, is being rapidly depleted. IPv4 uses 32-bit addresses and can support 4.3 billion devices connected directly to the internet. The replacement protocol, called IPv6, uses 128-bit addresses and provides such a vast number of addresses that it can only be expressed mathematically: 3.4 x 10 to the 38th power. A few skeptics question the need for IPv6. But most Internet policymakers and network technology experts assert that the shift to IPv6 is inevitable, and the time to move is now.


  • Why do we need IPv6?
  • How much IPv4 space is left?
  • What about allocated-but-unused IPv4 addresses?
  • How many internet users are there globally?
  • How fast is internet usage growing?
  • Who is using Facebook?
  • How many Twitter users are there?
  • How many computers are connected to the internet?
  • How many smartphones are in use?
  • How many apps are being downloaded?
  • How many e-books are being read?
  • What will the internet look like in 2015?


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