who works at ISPs any more? DNS resolving seems awfully centralized these days, what with the high-bandwidth backbones and overengineered central servers.

---------- Forwarded message ---------- From: bert hubert [email protected] Date: Fri, Aug 9, 2013 at 2:05 PM Subject: [Pdns-users] Want to help PowerDNS? Want a free PowerDNS mug? Please send in (anonymized) PCAPs! To: [email protected], [email protected]

Hi everybody,

Over the years, DNS access patterns change. New versions of popular operating systems, whole new operating systems, DNSSEC, larger IPv6 deployments, the shift to mobile etc mean that the strategies for best DNS performance are changing.

A few years ago we asked you to help us optimize the PowerDNS Recursor by sending us (anonymized) dumps of resolver traffic, and that was tremendously helpful for us in improving the performance of the recursor.

We are now asking you to help us again, since we've observed that our few years old traffic is no longer representative of all the new devices on the internet these days.

And to help you along, we'll lovingly ship you some PowerDNS mugs and pens to thank you for your PCAPS!

We will of course not share your PCAP files with anybody, and we also provide the 'dnswasher' tool to remove your customer's IP addresses from the dumps.

What we are looking for is traffic from/to PowerDNS Recursors. To record, try:

# tcpdump -i eth0 -w for-powerdns-from-x -C 1000 -s 1600 port 53 (or -i any)

And leave this running for as long as you want. It will generate 1G large PCAP files which will help us tremendously. To test yourself, feed the file generated to 'dnsreplay' for example, or 'dnsscope' and get statistics on how well you are doing.

To submit the files to us, optionally feed them through 'dnswasher' to remove customer IP addresses, and then upload to ftp://training.powerdns.com/anon

This anon directory is world writable, but not readable. Filenames have to be unique however. If you want, we can provide feedback on what your PCAPs have taught us, please send email to [email protected]. This is also the place to send your address for the free PowerDNS mugs & pens!

To learn more about dnsreplay, dnsscope, and dnswasher, see http://doc.powerdns.com/html/analysis.html . To download, head to:

https://autotest.powerdns.com/job/auth-git-semistatic-deb-amd64/ https://autotest.powerdns.com/job/auth-git-semistatic-rpm-amd64/ https://autotest.powerdns.com/job/auth-git-semistatic-deb-i386/ https://autotest.powerdns.com/job/auth-git-semistatic-rpm-i386/

But, to clarify, any pcap is good for us, if it is washed, analyzed or not.

Thank you very much, and we hope to be receiving lots of packets!

Bert

-- PowerDNS Website: http://www.powerdns.com/ Contact us by phone on +31-15-7850372

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