Olaf's compromise text looks OK to me. If no one objects I'll submit this later 
today. 

/Ludwig 

Sent from my smartphone

---- Olaf Bergmann wrote ----

>Hi Carsten, Ludwig,
>
>I think removing the discussed is not an option as the whole discussion
>was about "something needs to be said" but not being clear about what
>this is.
>
>On 2021-07-10, Carsten Bormann <[email protected]> wrote:
>
>> Maybe we can combine these two into one sentence that covers a common 
>> requirement?
>
>The result would be text that makes a profile document its security
>requirements and a new profile that combines existing profiles to
>document how the combination meets these requirements.
>
>From Francesca's previous proposal and your previous proposals this
>could be:
>
>NEW^n+1:
>
>   There may be use cases where different transport and security
>   protocols are allowed for the different interactions, and, if that is
>   not explicitly covered by an existing profile, it corresponds to
>   combining profiles into a new one.  For example, a new profile could
>   specify that a previously-defined MQTT-TLS profile is used between
>   the client and the RS in combination with a previously-defined
>   CoAP-DTLS profile for interactions between the client and the AS. The
>   new profile that combines existing profiles MUST specify how the
>   existing profiles' security properties are achieved. Any profile
>   therefore MUST clearly specify its security requirements and MUST
>   document if its security depends on the combination of various
>   protocol interactions.
>
>Grüße
>Olaf
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