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Re: [dbound] BoF request for IETF 115

John R Levine <johnl@taugh.com> Thu, 22 December 2022 04:00 UTC

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Date: Wed, 21 Dec 2022 22:59:56 -0500
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From: John R Levine <johnl@taugh.com>
To: Tim Wicinski <tjw.ietf@gmail.com>
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Subject: Re: [dbound] BoF request for IETF 115
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> But the problem I've struggled with (and perhaps what Paul V is thinking 
> of) is "how can I prove that this set of domains belong to the same 
> business organization as this primary domain"?

Assuming that the set of domains are descendants of the primary domain, 
yeah, that's what the 2016 draft (now in -07 with a bunch of bugs fixed) 
does.  The problem for the browser crowd is that DNS lookups are too slow, 
and for Paul is that there's no mechanical way to extract all of the 
dbound records from the DNS tree if you want to fix the performance 
problem by prefetchng everything.

There's a different much harder but potentially more interesting problem, 
how can you tell that two sibling are under the same management, with 
typical examples being google.com, gmail.com, and 1e100.com.  I don't know 
any way to do that without needing vast numbers of new RRs all over the 
DNS tree.

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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