[Dots] TR: [IANA #1181897] expert review for draft-ietf-dots-signal-call-home (service-names-port-numbers)

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Hi All, 

We received this reply from the port expert.

We do have an appendix that explains why we do need a port number: demux two distinct services (one to handle mitigation and another one to request mitigations). When a DTLS connection is received, the node hosting both the base and call home has no means to determine which role it needs to proceed with. 

I'm not sure how we can follow the suggestion to "use two different messages on the same port" especially that we don't define the transport but rely upon existing ones. 

Unless there are other tweaks not already discarded in the past, I suggest we maintain our request.  

Thoughts? 

Cheers,
Med

-----Message d'origine-----
De : Sabrina Tanamal via RT [mailto:[e-mail]] 
Envoyé : jeudi 12 novembre 2020 23:43
Cc : [e-mail]; BOUCADAIR Mohamed TGI/OLN <[e-mail]>; [e-mail]; [e-mail]; [e-mail]; [e-mail]; [e-mail]
Objet : [IANA #1181897] expert review for draft-ietf-dots-signal-call-home (service-names-port-numbers)

Dear Authors, 

We have a response from the IESG-designated port expert: 

I do not see sufficient reason for a second port assignment to be made for this single system. At best, they should just use two different messages on the same port.

This request should not be considered in isolation; it is coupled to https://tools.ietf.org/html/draft-ietf-dots-server-discovery.

One service, one port.

=== 

Best regards,

Sabrina Tanamal
Senior IANA Services Specialist

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