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23 .TH CURLOPT_DNS_SERVERS 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
25 CURLOPT_DNS_SERVERS \- set preferred DNS servers
27 #include <curl/curl.h>
29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_SERVERS, char *servers);
31 Pass a char * that is the list of DNS servers to be used instead of the system
32 default. The format of the dns servers option is:
34 host[:port][,host[:port]]...
38 192.168.1.100,192.168.1.101,3.4.5.6
40 NULL - use system default
46 This option requires that libcurl was built with a resolver backend that
47 supports this operation. The c-ares backend is the only such one.
51 Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not,
52 CURLE_NOT_BUILT_IN if support was disabled at compile-time,
53 CURLE_BAD_FUNCTION_ARGUMENT when given an invalid server list, or
54 CURLE_OUT_OF_MEMORY if there was insufficient heap space.
56 .BR CURLOPT_DNS_LOCAL_IP4 "(3), " CURLOPT_DNS_CACHE_TIMEOUT "(3), "