[Add] R1.1 (was RE: WGLC for draft-ietf-add-dnr)

[[e-mail]]

Hi Chris,

Thank you for the comments and for sharing this assessment.

I will reply to each of the comments in a separate message for convenience.

Please see inline.

Cheers,
Med

De : Add <[e-mail]> De la part de Chris Box
Envoyé : mercredi 9 mars 2022 18:36
À : Deen, Glenn <Glenn_Deen=[e-mail]>
Cc : [e-mail]
Objet : Re: [Add] WGLC for draft-ietf-add-dnr

Hi everyone.

I've assessed DNR against relevant parts of draft-ietf-add-requirements.
Here's the first.

    +=============+===================================================+

    | Requirement | Description                                       |

    +=============+===================================================+

    | R1.1        | Discovery SHOULD provide a local network the      |

    |             | ability to announce to clients a set of, or       |

    |             | absence of, designated resolvers.                 |

It's not clear to me how you use DNR to advertise the absence of local encrypted DNS. Are we saying the router should send a frame with zero option length (if that is considered a multiple of 16), and zero ADN length? If yes, we should write that. If that's a bad design, we should think about what is better.

[Med] A network that does not support an encrypted DNS scheme (or configured to not supply an encrypted DNS to a requestor (*)) won’t advertise the DNS options when servicing that host. This is the normal behavior that is followed for configuration information (refer to rfc8415#section-18.3).

(*) the exact procedure for this case is specified in: https://datatracker.ietf.org/doc/draft-boucadair-opsawg-add-encrypted-dns/.




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