Nick, the solution to this is to do DNS64 in the validator.   If the validator 
is a stub resolver, do the DNS64 hack there.   AFAIK the technology to support 
this already exists.

> On Feb 22, 2017, at 7:23 AM, Heatley, Nick <[email protected]> wrote:
> 
> Post exhaustion, the majority of cellular networks and some public wifi 
> networks will use DNS64.
> DNSSEC and DNS64 do not get along. DNSSEC for “A records only” is broken.
> Is this the reason why all content must go v6?
> Or is the case for DNSSEC still questionable?
> Or do end hosts need to perform DNS64 so “DNSSEC for A records only” can be 
> intact?
>  
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