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Re: [Bundled-domain-names] A lightweight and semantics-free proposal to signal aliasing

Stephane Bortzmeyer <bortzmeyer@nic.fr> Tue, 15 November 2016 02:24 UTC

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Date: Tue, 15 Nov 2016 11:20:14 +0900
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: John Levine <johnl@taugh.com>
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References: <20161114131643.GA13407@laperouse.bortzmeyer.org> <20161108193731.17863.qmail@ary.lan>
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Subject: Re: [Bundled-domain-names] A lightweight and semantics-free proposal to signal aliasing
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On Tue, Nov 08, 2016 at 07:37:31PM -0000,
 John Levine <johnl@taugh.com> wrote 
 a message of 26 lines which said:

> other.example. ALIAS main.example.
> 
> main.example. SAILA other.example.
> 
> Now I look up www.other.example, which I presume is supposed to be
> substitutable for www.main.example.

Yes.

> Tree walk?

Yes. May be helped by some optimisations from a public suffix list.

> Magic extra stuff in the DNS response?

No, the idea is to use unmodified name servers (resolvers or auths).

> PS: This proposal looks a lot like a simpler version of Andrew's SOPA
> proposal,

draft-sullivan-domain-policy-authority ? If so, _I_ am confused, SOPA
does not describe aliases/substitutable domain names, and it
explicitely does not work unless names are contiguous in the tree
("The target name SHOULD be either an ancestor, a descendent, or a
sibling of the owner name in the record.")

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