1-82) Node A sends an NS message whose source address is the unassigned address :: and thedestination address is the corresponding solicited-node multicast address of the IPv6 address tobe detected. The NS message also contains the IPv6 address.3) If node B uses this IPv6 address, node B returns an NA message. The NA message contains theIPv6 address of node B.4) Node A learns that the IPv6 address is being used by node B after receiving the NA message fromnode B. Otherwise, node B is not using the IPv6 address and node A can use it.Introduction to IPv6 DNSIn the IPv6 network, a Domain Name System (DNS) supporting IPv6 converts domain names into IPv6addresses. Different from an IPv4 DNS, an IPv6 DNS converts domain names into IPv6 addresses,instead of IPv4 addresses.However, just like an IPv4 DNS, an IPv6 DNS also covers static domain name resolution and dynamicdomain name resolution. The function and implementation of these two types of domain nameresolution are the same as those of an IPv4 DNS. For details, refer to DNS Operation in this manual.Usually, the DNS server connecting IPv4 and IPv6 networks contain not only A records (IPv4 addresses)but also AAAA records (IPv6 addresses). The DNS server can convert domain names into IPv4addresses or IPv6 addresses. In this way, the DNS server has the functions of both IPv6 DNS and IPv4DNS.Protocols and StandardsProtocol specifications related to IPv6 include:z RFC 1881: IPv6 Address Allocation Managementz RFC 1887: An Architecture for IPv6 Unicast Address Allocationz RFC 1981: Path MTU Discovery for IP version 6z RFC 2375: IPv6 Multicast Address Assignmentsz RFC 2460: Internet Protocol, Version 6 (IPv6) Specification.z RFC 2461: Neighbor Discovery for IP Version 6 (IPv6)z RFC 2462: IPv6 Stateless Address Autoconfigurationz RFC 2463: Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6)Specificationz RFC 2464: Transmission of IPv6 Packets over Ethernet Networksz RFC 2526: Reserved IPv6 Subnet Anycast Addressesz RFC 3307: Allocation Guidelines for IPv6 Multicast Addressesz RFC 3513: Internet Protocol Version 6 (IPv6) Addressing Architecturez RFC 3596: DNS Extensions to Support IP Version 6IPv6 Configuration Task ListComplete the following tasks to configure IPv6:Task RemarksConfiguring an IPv6 Unicast Address Required
