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Understanding IPv6, Second Edition by Joseph Davies

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Chapter 1. Introduction to IPv6

At the end of this chapter, you should be able to do the following:

  • Describe the shortcomings of Internet Protocol version 4 (IPv4) and the modern-day Internet, and describe how Internet Protocol version 6 (IPv6) addresses these shortcomings.

  • Describe how the address depletion problem of IPv4 leads to the use of Network Address Translators (NATs) and problems with end-to-end communication.

  • List and describe the features of IPv6.

  • List and describe the key differences between IPv4 and IPv6.

  • State the reasons for and business value of deploying IPv6.

Limitations of IPv4

The current version of IP (known as version 4 or IPv4) has not changed substantially since Request for Comments (RFC) 791, which was published in 1981. IPv4 ...

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