07-06-2012
So I take it this server has one of the IPs listed in resolv.conf?
Assuming that is the case, the problem is that this host is a dns server running "named". Named can run in one (or more) of several modes :
1. DNS master - holds the master copy of all hosts and objects it resolves
2. DnS slave - holds a copy which it regularly fetches from the master
3. DNS resolver & cache - resolves and caches answers from anither DNS server - this is called "forwarding".
What is your intention for this service?
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LEARN ABOUT MOJAVE
curlopt_dns_cache_timeout
CURLOPT_DNS_CACHE_TIMEOUT(3) curl_easy_setopt options CURLOPT_DNS_CACHE_TIMEOUT(3)
NAME
CURLOPT_DNS_CACHE_TIMEOUT - set life-time for DNS cache entries
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_CACHE_TIMEOUT, long age);
DESCRIPTION
Pass a long, this sets the timeout in seconds. Name resolves will be kept in memory and used for this number of seconds. Set to zero to
completely disable caching, or set to -1 to make the cached entries remain forever. By default, libcurl caches this info for 60 seconds.
The name resolve functions of various libc implementations don't re-read name server information unless explicitly told so (for example, by
calling res_init(3)). This may cause libcurl to keep using the older server even if DHCP has updated the server info, and this may look
like a DNS cache issue to the casual libcurl-app user.
Note that DNS entries have a "TTL" property but libcurl doesn't use that. This DNS cache timeout is entirely speculative that a name will
resolve to the same address for a certain small amount of time into the future.
DEFAULT
60
PROTOCOLS
All
EXAMPLE
TODO
AVAILABILITY
Always
RETURN VALUE
Returns CURLE_OK
SEE ALSO
CURLOPT_DNS_USE_GLOBAL_CACHE(3), CURLOPT_DNS_SERVERS(3),
libcurl 7.54.0 February 03, 2016 CURLOPT_DNS_CACHE_TIMEOUT(3)