* Simon Perreault: > On Monday 05 October 2009 15:48:17 Florian Weimer wrote: >> I still think that DNS64 >> is only needed if you have IPv6-only clients without *any* IPv4 stack >> whatsoever. > > Why does the presence of an IPv4 stack have anything to do with the > need for DNS64? Why would you need DNS64 if you can make connections to IPv4 addresses at the API level? The kernel can tunnel/NAT it, no matter what API calls you use. Only if AF_INET isn't there at all, you need to provide the system with some means to address IPv4 hosts without AF_INET.