Why IPv6?

In this lesson, we'll get an introduction to IP version 6.

Why IPV6?

  • IPv4 was initially designed for a research network that would interconnect some research labs and universities. For this purpose, 32 bit addresses, i.e., 232=4,294,967,2964.32^{32}=4,294,967,296\approx4.3 billion addresses seemed sufficient. Also, 32 bits was an incredibly convenient address size for software-based routers.

However, the popularity of the Internet, i.e., the number of smartphones and Internet of Things devices, was not anticipated. We’ve made do with 4.34.3 billion addresses so far by reusing them and with NAT boxes. Nonetheless, we are running out of addresses. Hence, IPv6 was designed to tackle these limitations of IPv4.

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