On 1 Nov 2018, at 15:06, Brian Dickson <[email protected]> wrote:

> > Maybe signaling the algorithm(s) for which signature(s) are 
> > desired/understood would do the trick?
> > I.e. in an EDNS option?
> 
> I don't think so. EDNS options relate to servers exchanging DNS messages. 
> ZONEMD relates to zones.
> 
> Hmmm... so at best it would be a one-way signal from the client to the 
> server, about what they support (and optionally prefer).
> The server has to send all the ZONEMD records regardless. 

There aren't necessarily any clients or servers, DNS or otherwise. A zone could 
be produced and consumed in some other way.


Joe
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