IP version 6
IP version 6 : Internet Protocol, Version 6, IPv6 was developed by the IEFT as a version of the IP protocol. It was accepted as an Internet standard in December 1995 because of work on IPng (next generation). This version is a further development of Version 4 (IPv4). The main enhancements are as follows: Extended addressing options, simplified header format, improved support for options and extensions, new facilities for defining the level of service, and improved security procedures. IPv6 has extended the address space from 32 bits to 128 bits, so that a significantly higher number of addressable Internet nodes can be addressed, several hierarchy levels are possible, and the auto configuration of addresses is simplified. The IPv6 header consists of a 4-bit version field for the IP version, a priority field of the same length for level-of-service attributes, and a 24-bit flow-label field, which is used by the data source to identify data packets that require special handling with a specific level of service.
