> > Of course if individual ISPs want to advertise routes to such > > prefixes internally, perhaps because they're paid to do so, > > that's their own > > business. > > You contradict yourself. Michel points out that an unambiguous address > space will be leaked, and you end up agreeing that the ISPs will do that > when paid.
no. what an ISP advertises to itself and what it advertises (and accepts) across ISP boundaries are different things. > The only way to prevent that case is for the ISP to have the > technical barrier of ambiguity to push back on the business side of the > house. there are even better business reasons for filtering such advertisements unless the owner of that block of addresses is paying you specifically to route them within your network. that, and the threat of router overload for ISPs that don't filter such advertisements, should be sufficient. Keith -------------------------------------------------------------------- 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] --------------------------------------------------------------------
