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Re: [DNSOP] "Optimization" in draft-ietf-dnsop-qname-minimisation

Tony Finch <dot@dotat.at> Mon, 05 January 2015 17:01 UTC

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Date: Mon, 05 Jan 2015 17:01:01 +0000
From: Tony Finch <dot@dotat.at>
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Subject: Re: [DNSOP] "Optimization" in draft-ietf-dnsop-qname-minimisation
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Paul Hoffman <paul.hoffman@vpnc.org> wrote:
>
> +1 to David's comment. I have always heard that sending the full name
> was an optimization for authoritative severs that spanned more than one
> level, and that such servers were common in "the early days".

It's also an optimization for dual-purpose authoritative + recursive
servers, in the days before they were considered a bad idea.

> It is worth pointing this out in this draft, and to also say that that
> situation may be much less common now than it was in antiquity.

I don't think you have to go that far back to find (e.g.) root servers
also authoritative for big GTLDs.

Tony.
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