In order to support IPv6 protocol,it is needed to extend current DNS (Domain Name System) to make it possible to implement the resolution from IPv6 address to domain name or vice versa.

• 为了实现对IPv6协议的支持,需要对现有IPv4协议下的域名系统进行相应的扩展,以使其能在IPv6协议下正确地进行IP地址与域名的正向或反向解析。