Bob, > Bob Hinden wrote: > Another router issue that gets talked around is should > packets with site-local destination be forwarded to > "default". Given that site-local addresses are not > created without being configured, one approach could be > to have a "black hole" route for FEC0::/10 preconfigured > in all routers.
There is some potential in this. Rationale: ambiguity is a fail-safe for routes that leak in the DFZ even though they were not supposed to and for ISPs that don't filter them even though they were supposed to. If we could add to this black hole a preconfigured prefix-list for each peer that would deny FEC0::/10 ge 10 (1) that would likely be good enough to let ambiguity go and we would make a step towards globally unique site-locals. (1) I am thinking about something like the default deny at the end, except that it would be at the beginning and would be effective even though there is no prefix-list applied to the peer. Something that would require a separate command and a confirmation to de-activate. Why would one want site-locals in BGP anyway? Michel. -------------------------------------------------------------------- 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] --------------------------------------------------------------------
