Brian E Carpenter wrote: > I'd say that was a wise precaution in a 6to4 decapsulator; I can't see > any legitimate reason to accept a link-local destination address from > a 6to4 relay. (There's a legitimate use of link-local source addresses > in the 6to4 multicast case, but only for MLD reports, and I > think we could > require hop limit = 1 in that case if we wanted.)
I did present a case in my 6to4-scale draft, but that was specific to ICMP between a 6to4-router and 6to4-relay for RS/RA use in NUD. To address the spoofing issue I used a random value generated by the 6to4-router to be echoed by the relay. In any case there was not much interest in that path, so as you say there are no current reasons beyond multicast. Tony -------------------------------------------------------------------- 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] --------------------------------------------------------------------
