The draft contains the text:

   I-D.sip-eku [9] describes the method to validate any Extended Key
   Usage values found in the certificate for a SIP domain.
   Implementations MUST perform the checks prescribed by that
   specification.

This last sentence creates a normative dependency of domain certs on  
EKU. My read of the WG discussion was that domain certs clarified  
important issues about TLS cert verification from 3261, and it was  
fairly likely that it the WG would decide that the domain-certs draft  
was an essential correction to 3261. We haven't really had a  
discussion about whether EKU is essential or an correction to 3261 or  
even whether it MUST be implemented, so it seems like a bad idea to  
have this dependency.

I propose we strike the last sentence and make the reference to I- 
D.sip-eku informative. I think that will be the best path to allow  
both the EKU and the domain-certs document get finished faster than if  
we try to tie them together in this way.


Cullen <with my individual contributor hat on>

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