> > Posting only as an interested individual: Me to. > - What level of impact, if any, will the widespread > use of site-local addresses have on: > - Applications (current and future) > - Transport Protocols > - Security Protocols > - Network Management Protocols
Add mobile-ip to the above list. Having once thought that site-local addresses in sites that have global prefixes was reasonable idea, I did go down the path of trying to figure out what it would take to allow mobile nodes to use site-local addresses. Since mobile nodes typically don't know the "range" of their mobility up front, this seems to lead to a desire to have a mobile node use site-local addresses when in its home site and not have that communication fail when the node moves outside its home site. (If this isn't provided the result would probably be that all mobile nodes will only be configured with global addresses.) An outline of what it takes to do this was in previous versions of the long expired draft-ietf-ipngwg-site-prefixes draft. It seemed like by adding explicit support for this in correspondent nodes, home agents, and mobile nodes it could be made to work. But, just like applying thrust to make pigs fly, it might not be a good idea. At some WG meeting a long time ago there was rough consensus to not have this complexity (which was the right answer in my opinion). But a result of this is that nodes that might be mobile and use mobile ipv6 should not be configured with a site-local address (unless it is somehow known that they will not move outside of their home site). Thus any claimed benefits of site local addresses don't apply to mobile nodes AFAI understand. For instance, the claimed security benefits when configuring nodes to only accept packets from site-local addresses would cause a problem for mobile nodes, Erik -------------------------------------------------------------------- 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] --------------------------------------------------------------------
