Does anyone use nscd?

Dag-Erling Smørgrav des at
Wed Oct 5 08:39:55 UTC 2011

Lawrence Stewart <lstewart at> writes:
> If the machine running nscd loses connectivity with the DNS server for
> a while and does a DNS lookup during that time, nscd will cache the
> -ve reply indefinitely for all users, which breaks all sorts of
> crap. Have to forcibly run "nscd -I all" to fix. I will find and fix
> this bug one day if noone beats me to it...

Definitely a bug, nscd is only supposed to cache negative responses for
60 seconds.  I hope you find the time to track it down :)

Is it 100% reproducable?  How long does the DNS server have to be
unreachable before it happens?

> I'd like to see it stay in base. Moving it (slowly) towards a point
> where we can turn it on by default would be cool.

Agreed, in principle.

Dag-Erling Smørgrav - des at

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