Patent ID: 8879418

Claim:
A method for updating a domain name system (DNS) of a host in IPv6 stateless address auto-configuration, said method comprising: adding an option in a router solicitation (RS) message sent by a host and/or a router advertisement (RA) message sent by a router, said option including information for negotiating an update of the DNS of the host; based on said information, the host negotiating with the router to determine whether the host or the router register a mapping between a global address of the host and a full domain name of the host, to a DNS server, to complete updating the DNS of the host, wherein the option in the RA message includes domain name suffix information of the host, and in the RA message, the option being placed after one or more corresponding address prefix option(s), to indicate that the option and said one or more address prefix option(s) form a match, and wherein an unmatched address prefix option is placed after a matched address prefix option and the option.