Re: dnscache bug, or ... ?

["Malte Tancred" <malte-os-f029a5739161d738eb59f48b162a199d@tancred.com>]

On Jan 30, 2007, at 20.41, david@stults.com wrote:
[...]
> See the example below for what I'm referring to.  Even if I were to  
> move
> the domain integra.net to a new provider, and the root servers were
> appropriately updated, I could keep my dnscache returning the wrong
> answers indefinitely as long as two conditions are met:
>
> 1.  The old DNS servers respond authoritatively
But they shouldn't, right?

See <URL:http://cr.yp.to/djbdns/run-server.html#move-zone>, point 4:

  "Make the same changes on the old servers. This is important
   because caches can continue talking to the old servers for any
   length of time; caches are under no obligation to double-check
   with the parent servers."

Regards,
Malte