Subject: [dnsext] Case for EDNS0-client-subnet...

From: Nicholas Weaver <[email-masked]>
Date: Mon, 1 Nov 2010 09:57:33 +1100

http://people.ee.ethz.ch/~wmuehlba/imc-dns-10.pdf

Active measurement of local resolvers, Google DNS, OpenDNS.

IMO, it really shows the value that EDNS0-client-subnet would have if deployed: OpenDNS and Google DNS provide significantly less local replies in many many cases.

Also, it shows the criticality of cluster-based DNS resolvers to ensure that load balancing is on query, not random, so that caching is effective.