[cvsnt] CVSNT 2.5.04 build 3236 server really slow

Tony Hoyle tony.hoyle at march-hare.com
Mon Feb 2 14:28:07 GMT 2009

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Peter Crowther wrote:
> I'm somewhat more interested as to how a "correctly configured" DNS
> for this environment would either take 3 seconds to fail, or return
> an IP address that can't then be pinged.  Surely it should fail
> immediately without returning an address?  So I agree with you that
> the DNS needs work, just not about the symptom :-).

Correctly configured DNS in any configuration will return almost
immediately.. it'll either fail or succeed.  I'm not actually sure how a
machine not connected to the internet could take 3 seconds to resolve a
name.. that's a new one on me.

Even if it somehow returns an unpingable address as there's no default
route the machine will just return immediately with a failure, so no
harm done.

If for some reason there's a default route given by a misconfigured dhcp
server that router will immediately return an ICMP host unreachable or
similar, so that doesn't really slow things down.

What we appear to be seeing in some cases is a combination of
misconfigurations where a network is setup as if it is connected to the
internet but isn't.. that's quite creative - I can't think of a way to
do it (well not a sane way anyway.. certainly nothing that could be done


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