[CentOS] nscd

Mon Mar 25 23:43:17 UTC 2013
Gordon Messmer <yinyang at eburg.com>

On 03/25/2013 10:26 AM, m.roth at 5-cent.us wrote:
> Just now, over lunch, it failed... until I restarted nscd. My manager
> tells me it's caching... but it seems to be caching momentary failures.

That could be coincidence.  As far as I know, Firefox will not use nscd 
for hostname lookups.  I confirmed Firefox using strace, but not others.

If edns0 changed your system's behavior, I would suspect that someone 
recently turned on DNSSEC, and it's not working correctly.