Concise Guide to DNS and BIND, The

IPv6 Support

Currently, the Internet builds on IPv4. Several problems exist with IPv4, though. Some problems affecting the security design of the Internet are proving hard to beat, but more importantly, the address space offered by the 32-bit addresses is almost exhausted. IPv6 is the answer. IPv6 has been tested on the Internet for a number of years in a organization called the 6Bone and on the research network known as Internet2. It's not quite certain when IPv6 will be in wide deployment across the ordinary Internet, but it is in experimental use at more and more sites. Meanwhile, BIND needs to support IPv6 in two ways: It stores IPv6 addressing information in A6 and AAAA records, and, with BIND 9, it can also speak IPv6 with clients and ...