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     [nocol-users] nsmon - monitoring DNS caches


I'm using Nocol to monitor a couple of DNS servers. They're not masters
for any domain - just caches for dial-in users. The problem is that
nsmon sends a query with RES_RECURSE and RES_DNSRCH both turned off.
This means that if the domain we test for is cached then the test is
successful, otherwise the servers appear to be down. I've just
recompiled nsmon so it sends queries with these options turned on, and
this seems to fix it. What I'm not sure about is why these options were
turned off in the first place? Is there some subtle gotcha?