IPV6的技术原理

Heory of IPV6 Technology

IPv4的核心技术使Intemet获得巨大成功，但IPv4地址资源紧张直接限制了IP技术应用的进一步发展。移动和宽带技术的发展要求更多的IP地址，CIDR（无类型域间选路，Classless Inter-Domain Routing），VLSMVLSM（变长子网掩码，Variable Length Subnet Masking），NAT（网络地址转换，Network Address Translation）等混合地址等技术只能暂时缓解IPv4地址紧张，但无法根本解决地址问题，目前IPv6成为公认的IPv4未来的升级版本。

Although the core technology of IPV4 has achieved remarkable success in the internet, its address linfit has restrictions to the further apply of IP technology. Much more addresses are needed because of the development of mobile technology and broadband technology. However, technologies like CIDR, VLSM, NAT and mixed addresses can not solve the problem of address limit once for all as they can only alleviate the address shortage temporarily. At the moment, IPV6 is generally acknowledged as the replacement of IPV4.