Feelings about NAT64/DNS64?

[George Bonser]

So far the available solutions for NAT64/DNS64 seem sparse.  It seems to
me like a good mechanism but so far it looks like it is only available
on the high-end cisco routers (CGv6), a rather expensive Microsoft
solution, and an open source solution that is basically a perl script
and I am unsure will handle any reasonable amount of load.

Anyone investigated this any closer?

George