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Re: [dns-privacy] Multiple DNS requests per packet, multiple packet responses

Tony Finch <dot@dotat.at> Wed, 19 March 2014 18:31 UTC

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Date: Wed, 19 Mar 2014 18:31:44 +0000
From: Tony Finch <dot@dotat.at>
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Subject: Re: [dns-privacy] Multiple DNS requests per packet, multiple packet responses
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Phillip Hallam-Baker <hallam@gmail.com> wrote:
>
> I have talked to the engineers at several browser companies and they tell
> me that parallel queries do not actually work the way you imagine.

They do as far as the protocol is concerned and there are many
stub resolver implementations that make concurrent queries.

> In the first place it is only possible to issue the queries at all if you
> override the built in platform API. But even when you do, problems are
> caused by middleboxes and ISPs which limit the number of concurrent queries.

So fix them. You will have to anyway.

Tony.
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