[dns-operations] DNS "get new data" bit (Was: The perils of retroactive DNSSEC validation

Duane Wessels wessels at dns-oarc.net
Mon Nov 17 17:21:46 UTC 2008

On Mon, 17 Nov 2008, Stephane Bortzmeyer wrote:

> On Fri, Nov 14, 2008 at 08:57:30PM +0100,
> Florian Weimer <fw at deneb.enyo.de> wrote
> a message of 52 lines which said:
>> The initiator could set a flag, similarly to the RD bit, which
>> requests new data.  This has been implemented for HTTP, for
>> instance.
> Experience with HTTP shows a lot of abuse, because people have an
> irrational fear of caches and therefore tend to request new data at
> every opportunity.

Agreed.  HTTP caching is almost worthless these days because both
clients and servers have a too much control over if and how data
can be cached.  Let's not ruin it for DNS also.


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