> -----Original Message----- > From: George Bonser [mailto:[email protected]] > Sent: Monday, May 16, 2011 2:10 AM > To: Iljitsch van Beijnum; Owen DeLong > Cc: NANOG list > Subject: RE: Yahoo and IPv6 > > > > > Because that way the IPv4 and IPv6 swarms remain disconnected in the > > absence of some dual stack peers. (I.e., if the swarm is small and > > you're the only IPv6 participant.) > > > > It would be much better if you could go from IPv6 to IPv4 through a > > NAT64. > > The problem is when the client is handed an explicit address rather > than > a host name. In that case, there needs to be some standard environment > variable for "IPv64 Prefix" that applications can query. > > For a browser this might be something like the configured proxy. Maybe > an OS such as Windows might have a registry value for this. Maybe > Linux > and other unix-like variations could have a sysctl for that. > > There should be some standard way for a native v6 host to determine the > v6 to v4 prefix to use in a NAT64 environment.
That need is acknowledged and being worked, http://www.ietf.org/mail-archive/web/behave/current/msg09634.html -d
