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I do not seem to have a nscd service on my Cent 6.3 server. I am not running BIND on it, but I am curious about the DNS client caching. How does this happen on a standard minimal install of Cent 6.3 when the NSCD daemon is not present?

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What makes you think your box is doing any cacheing at all? –  MadHatter Apr 17 '13 at 13:00
It's very possible that it isn't. I guess that is what I am trying to determine. Is there any mechanism for DNS client caching outside of NSCD? –  user160910 Apr 17 '13 at 13:11
Well, almost all versions of BIND cache, unless you work hard to tell them not to. So if you were running BIND locally, that might well cache; if you weren't, your upstream nameserver (see /etc/resolv.conf) almost certainly will. –  MadHatter Apr 17 '13 at 13:17
I am only concerned with DNS client in this case. –  user160910 Apr 17 '13 at 13:22

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