Yoav Nir noted:
>
> As a reminder, the proposed resolution is as follows:
>
>  * Do not establish a registry now
>       Let the first new header field specification establish it
>
>  * A client that gets an unknown field ignores it
>       This means no mandatory-to-understand extensions

Thanks, Yoav.

I'd also noted that we need to decide on a IANA policy to declare. My original message is here..

  https://www.ietf.org/mail-archive/web/websec/current/msg01315.html

..and I suggested that, since HSTS is a security policy, I lean towards wanting to have relatively rigorous review applied to any registry and its contents created for HSTS directives and thus am thinking a policy of "IETF Review" is what we ought to state (for "FOO" in the below excerpt from -12 at the end of section 6.1)..

   Additional directives extending the semantic functionality of the STS
   header field can be defined in other specifications, with a registry
   (having an IANA policy definition of FOO [RFC5226]) defined for them
   at such time.

   NOTE:  Such future directives will be ignored by UAs implementing
          only this specification, as well as by generally non-
          conforming UAs.  See Section 14.1 "Non-Conformant User Agent
          Implications" for further discussion.


thanks,

=JeffH

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