Paul Wouters <p...@nohats.ca> wrote:
>
> You would only add it to the question for DNSKEY of the root.

Yes.

> Maybe only after you determined a validation failure, so you clearly
> have the wrong trust anchor.

No, the point of this option is to signal to the root what trust anchors
are in use by the population of validators, before a rollover happens.

It is like the algorithm signalling option, RFC 6975. (Which seems to be
mostly unimplemented... why?)

> It seems in general, having some special record signed by only the
> new key seems a nicer solution,

That cannot work.

http://www.ietf.org/mail-archive/web/dnsop/current/msg14664.html

Tony.
-- 
f.anthony.n.finch  <d...@dotat.at>  http://dotat.at/
Dover, Wight, Portland, Plymouth: Cyclonic, mainly southwest, 4 or 5. Slight
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