issues with mcd.com DNS

[Dave Lugo]

Mark_Andrews at isc.org wrote:

> 
> 
> 	ns.mcdkorea.co.kr only has glue.  According to the zone it
> 	does not exist.   Once the cache learns that ns.mcdkorea.co.kr
> 	doesn't exist lookups will fail.
> 


But the catch already has a good answer cached, and a dig done against 
the cache (run on the same box as the cache) succeeds, while a dig from 
the same/24 as the cache, against the same cache, fails.  If what you 
say is correct, I would (with my admittedly junior knowledge of DNS 
compared to you) expect both digs to fail.

It's this apparent inconsistency that has me confused.  Is this correct 
behavior?

Thanks,

Dave

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Dave Lugo   dlugo at etherboy.com    LC Unit #260   TINLC
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