2. IPv6

IP version 6 (IPv6) is a new version of the Internet Protocol, designed as the successor to IP version 4 (IPv4) [RFC-791]. The changes from IPv4 to IPv6 fall primarily into the following categories:

• Expanded addressing capabilities

• Header format simplification

• Improved support for extensions and options

• Flow labeling capability

• Authentication and privacy capabilities

For more information on IPv6 in general, visit the IETF's IPv6 Working Group.