On Mon, Mar 17, 2003 at 08:37:46PM -0800, Fred L. Templin wrote: > I'm just dropping into this thread, and maybe this idea has already come up. > But, when the DNS returns both A and AAAA records for a destination and > when there is no v6 route, why can't the source just do automatic v6-in-v4 > tunneling using an address from an AAAA record as the v6dst and an address > from an A record as the v4dst? Gives you a decision tree of sorts, i.e.:
In principle reasonable, but many things may still cause failure, e.g. - the tunnelling fails due to firewall blocks - the IPv4 connectivity is down - the A and AAAA records may point to different hosts Tim -------------------------------------------------------------------- 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] --------------------------------------------------------------------
