[dns-operations] Bailiwick stats? Idea for mitigation...

[Paul Vixie]

> So, what we were thinking of is doing the following: When a cached  entry
> is about to be overwritten with something different, do an  additional
> request. The material in that additional request has to be  equal to that
> 'something different' before the cached entry is  overwritten.
> 
> Roy

far end load balancers (including those made by cisco) won't always answer
equally.  if you repeat a query N times, then in the end you'll have to 
either pick the last one or a random one.

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