There is a good reason why this feature is not part of the official DNS spec, as... | Hacker News

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		gst on Aug 30, 2011 \| parent \| context \| favorite \| on: Google and OpenDNS made the web faster for everyon... There is a good reason why this feature is not part of the official DNS spec, as it breaks DNS caching: Once you cache results those three octets are pretty useless.

davidu on Aug 30, 2011 [–]

That's not true at all.

http://tools.ietf.org/html/draft-vandergaast-edns-client-sub...

Caching works just fine. There is some cache inefficiency, but memory is cheap. Really cheap. http://www.jcmit.com/mem2010.htm

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