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[hackathon] IETF 118 Hackathon: Are long-lived TCP sessions a problem for (DNS) statistics?

Jerry Lundström <jerry@dns-oarc.net> Fri, 06 October 2023 07:27 UTC

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Date: Fri, 06 Oct 2023 09:27:39 +0200
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To: hackathon@ietf.org, dnsop@ietf.org
From: Jerry Lundström <jerry@dns-oarc.net>
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Subject: [hackathon] IETF 118 Hackathon: Are long-lived TCP sessions a problem for (DNS) statistics?
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Hi all,

Some tools uses packet capturing to do statistics for DNS and some of 
them needs to see the beginning of the TCP sessions. If resolver systems 
out there start keeping TCP session against authorities open for a very 
long time (days or weeks) then it might become a problem for these tools.

We would like to look at two things;
1) First to poke at data to see if there are very long-lived TCP 
sessions out there today, or not(!) which is equally interesting to know.
2) Second to survey DNS statistics tools out there to see how they 
handle long-lived TCP sessions to understand how wide a problem this 
might be, if any. And maybe fix some of them if issues are spotted when 
doing this.

Sounds interesting? Do you have data to poke at? Hope to see you at the 
hackathon then! :)

Cheers,
Jerry Lundström & Roy Arends

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