Hello, RFC 2462 (IPv6 Stateless Address Autoconfiguration) states that: "....for a set of addresses formed from the same interface identifier, it is sufficient to check that the link-local address generated from the identifier is unique on the link. In such cases, the link-local address MUST be tested for uniqueness, and if no duplicate address is detected, an implementation MAY choose to skip Duplicate Address Detection for additional addresses derived from the same interface identifier..."
It also says: ".....To accommodate sites that believe the overhead of performing Duplicate Address Detection outweighs its benefits, the use of Duplicate Address Detection can be disabled through the administrative setting of a per-interface configuration flag....." Does this last segment mean that Duplicate Address Detection can be skipped completely at a site, or does it refer to the MAY part of the first segment (that it may be skipped for additional addresses, but not for the link-local IPv6 address)? I belive skipping this check completely could be effective in networks with low resources and where each device has a unique interface identifier. Thanks in advance. Nils Nordbotten -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
