IPv6, or the Internet Protocol Version 6, is the latest version of the Internet protocol, which gives the computers and other electronic devices connected with the internet network a unique identification and location. Due to the problem with the previous version of Internet protocol related to the address shortage, the IPv6 is developed by the Internet Engineering Task Force (IETF) as a countermeasure.


IPv6 became a draft standard for Internet Engineering Task Force (IETF) on December 1998, but on 14 July 2017, it became the Internet Standard through official consent. After 1990, the IETF became aware of the fact that with the rise of internet users much-developed Internet Protocol is needed. Around 1998, IETF finalized the formalities for the next-generation Internet Protocol.

The IPv6 uses 128-bit address instead of 32-bit like its predecessor, the IPv4. Theoretically, it can allow 2^ (128), or 3.4×10^ (38) addresses. The actual amount of address available is 7.9×10^ (28). The declined number is due to the reserved addresses for special use. Both the versions are designed to avoid working with each other, but the transition mechanism of the later version can communicate between the two hosts.

It also provides technical advantages other than providing a very large address space for both present and future internet users. It allows hierarchical address allocation method. The combination of two or more networks became easy with the latest Internet Protocol. It also limits the expansion of the table in the router that contains the lists of the network destinations.

During the design of the latest version of Internet Protocol device security, configuration, and mobility are also considered. The address has eight groups separated by a semicolon.

For example- 2001:0db8:0000:0000:0000:8a2e:0370:7334, is the address format of the latest version of Internet Protocol.

It is devised to provide Internet Layer for transmitting packets of data across the digital network. It also provides end-to-end service for the packet-switched network across different Internet Protocol networks.

It has two components, the header and payload. The header has the minimum functionality. An interesting fact about the header of IPv6is that, it only 2 times larger than that of IPv4. On the other hand, the address of an Ipv6 is 4 times larger than that of IPv4.

The payload contains the actual data that are needed. In simple words, headers help to transmit the payloads.

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