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Re: [dnsext] need new flag bit in EDNS, "do me no favours" (DMNF)

Roy Arends <roy@nominet.org.uk> Sun, 24 October 2010 23:04 UTC

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From: Roy Arends <roy@nominet.org.uk>
To: Paul Vixie <vixie@isc.org>, "namedroppers@ops.ietf.org" <namedroppers@ops.ietf.org>
Subject: Re: [dnsext] need new flag bit in EDNS, "do me no favours" (DMNF)
Thread-Topic: [dnsext] need new flag bit in EDNS, "do me no favours" (DMNF)
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Date: Sun, 24 Oct 2010 23:01:14 +0000
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On 10/24/10 6:52 PM, "Paul Vixie" <vixie@isc.org> wrote:

> i'm thinking we need a flag bit in edns to allow a client to opt out of
> things like "web error redirection" (dns ad insertion).  the semantics
> of it would just be, if server policy allows "clear path" dns for this
> query, then the server is requested to provide same.
> 
> if server policy does not allow, for example if dns ad insertion isn't
> optional or if the non-clear-path dns is for security reasons (blocking
> malware C&C names), then "clear path" dns would not be provided.
> 
> so this would be opt-out rather than opt-in, to make it noncontroversial.
> (those of us who previously wanted opt-in have learned that opt-in is
> considered controversial by the companies already doing dns ad insertion
> or similar non-clear-path dns.)
> 
> opin?  i can write a short i-d on it before beijing.

The end-game will be applications doing their own resolving. Real control.
No third party dependencies. No favors to ask.

Roy

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