Concepts: IPv6

Learn basic IPv6 concepts. If you are not sure what the differences are between IPv4 and IPv6, see detailed comparisons, such as how the IPv4 and IPv6 addresses compare to one another, or how IPv4 packet headers differ from IPv6 packet headers.

• IPv6 address formats
  The size and format of the IPv6 address expand addressing capability.
• IPv6 address types
  Use new types of addresses with IPv6.
• Neighbor discovery
  Neighbor discovery allows hosts and routers to communicate with one another.
• Stateless address autoconfiguration
  Stateless address autoconfiguration automates some of the network administrator's tasks. 
• Compare IPv4 to IPv6
  You can compare the IPv4 attributes to IPv6 attributes.