4 ms·

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 use

by gst 15y ago

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 15y ago
That's not true at all. http://tools.ietf.org/html/draft-vandergaast-edns-client-subnet-00#section-5.3 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 http://www.jcmit.com/mem2010.htm