The learning goals for this chapter are as follows:
- Learn the packet format for IPv6 and the protocols in which it differs from IPv4
- Explore the various features of an IPv6 address, and examine the special issues associated with each of the three types of addresses
- Understand the methods that will be employed for transition from IPv4 to IPv6 with co-existent IPv4 and IPv6 routers and hosts
- Explore in detail the various options for configuring and testing IPv6 in host operation systems
11.1 The Need for IPv6
The 32-bit IPv4 address space, completely allocated, was the initial motivation for IPv6. It is the vanguard for network and mobile users using both data and voice by extending an IP address to 128 bits. IPv6 and IPv4 are ...