* Simon Perreault: > On Sunday 04 October 2009 14:45:51 Florian Weimer wrote: >> I guess all systems on which Unbound runs are dual-stack, so this type >> of translation appears to be unnecessary (at the DNS level). > > This has nothing to do with the need for DNS64. See > http://tools.ietf.org/html/draft-ietf-behave-dns64-00 for details. Apparently, I was quite confused yesterday. I still think that DNS64 is only needed if you have IPv6-only clients without *any* IPv4 stack whatsoever. But such clients could send queries to an Unbound cache, so adding this to Unbound wouldn't be as pointless as I thought.