On 08/31/2013 10:51 PM, anntzer....@gmail.com wrote:
> It is the call to gethostbyname_ex that is very slow.  The call to
> gethostname is quick (and returns the same string as
> /usr/bin/hostname).

What gethostbyname_ex and /usr/bin/hostname do are very different
things.  gethostbyname_ex does a DNS lookup against a server.
/usr/bin/hostname just checks a local computer setting.  I don't see why
you are comparing the two.  /usr/bin/hostname is not going to help you
find a list of IP addresses that point to a machine.
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