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[dnsext] EDNS behaviour and draft-vandergaast-edns-client-ip-00.txt

Jim Reid <jim@rfc1035.com> Tue, 02 February 2010 18:53 UTC

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From: Jim Reid <jim@rfc1035.com>
To: Tony Finch <dot@dotat.at>
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Subject: [dnsext] EDNS behaviour and draft-vandergaast-edns-client-ip-00.txt
Date: Tue, 02 Feb 2010 18:51:10 +0000
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On 2 Feb 2010, at 18:26, Tony Finch wrote:

> On Tue, 2 Feb 2010, Jim Reid wrote:
>>
>> So, your idea of optional behaviour in some circumstances is to  
>> increase
>> DNS latency and generate extra queries. I see...
>
> Isn't that just how EDNS0 is specified to work?

Yes, but we're not talking about EDNS0 here. We're talking about an  
EDNS0 option.
The behaviour which was suggested could mean resolvers incorrectly  
deciding a server doesn't speak EDNS0 when in reality it doesn't  
understand a new EDNS0 option. That would be bad.

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