If a 4-digit block starts with a zero, this zero can be omitted to leave 3 zeros in the block.
![]() In the 1980s, when IPv4 was being developed, the new Internet was being built under the cooperation of several organizations. By the time IPv4 was complete, it was also when the Internet began to explode, threats on the Internet became popular. IP Next Generation (IPng) was created, then became IPv6 (RFC 1883) as it is today. IPv6 is the second standard network layer protocol after IPv4, used for computer communication via the Internet and other computer networks. IPv6 provides some interesting functions and is really the next step in the IP development process. These improvements include increasing address space, streamlined header formats, scalable headers, and the ability to maintain the privacy and integrity of information transmitted within the network. IPv6 was then fully standardized by the end of 1998 in RFC 2460. IPv6 has perfected the shortcomings left by IPv4 and created new ways to communicate that IPv4 cannot support. Advantages of IPv6 are presented in detail in the relevant documents. Below are the summary features of IPv6 and the improvements it can provide. This IPv6 protocol has a larger address space than the IPv4 protocol. That allows to be able to perform to 3.4x1038 (340,000,000,000,000,000,000,000,000,000,000 VND) address. An IPv6 address is usually written in 8 groups, each consisting of 4 hex numbers and each group is separated by a: sign. There are two rules to follow here when representing an IP address. First, a sequence of four consecutive 0s can be replaced by two:: signs. In that way the above IPv6 address can be abbreviated as follows: 2001: 0f68:: 0000: 0000: 0000: 1986: 69af. Obviously, the address that is example above still has a lot of digits that need to be typed. However, the second rule will allow you to make this address shorter. The second principle says that zeroes in a group can be ignored.
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