> > If you don't have a route to the destination, why try to reach it > on-link just in case the destination might happen to be on-link? Is > there a situation where this would be useful? >
Back when the ND spec was written the idea was that if two nodes can communicate on a link (e.g. using global addresses) it would be nice if they could continue to communicate even if the router(s) to the link disappear. I don't recall if there were any assumptions about the relative lifetime of the addresses they are configured (using stateless, dhcp, or manual) and the on-link prefixes advertised by the routers. But given that the ND spec allows a configuration where the routers don't advertise on-link prefixes (which causes initial packets to go through the router and then be redirected to the on-link destination) it would seem useful to be able to communicate after the router has gone away. 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] --------------------------------------------------------------------
