Subject: [Add] Limited domains

From: "Martin Thomson" <[email-masked]>
Date: Wed, 09 Sep 2020 12:45:20 +1000

https://github.com/ietf-wg-add/draft-add-requirements/issues/24

The requirements draft has a rather large (albeit mostly stubbed)  Section 4.  Aside from Section 4.2 (on content providers who provide resolvers), I believe that this is not a useful section.  The primary goal of this seems to be to address split horizon configurations, where resolvers might only be used for some names, based on unspecified logic.

The VPN case seems to be one area in which this is clearer.  A list of suffixes is directly configured by the VPN and the VPN resolver is only used for those names.  But we also have things like .local and .onion that define specific alternative resolution methods.

I suggest that this section proposes no new requirements and that we simply need to acknowledge that a selected resolver might not be chosen/configured/discovered for the purposes of resolving every possible name.