Provided by: libcurl4-doc_8.9.1-2ubuntu2.1_all
NAME
CURLOPT_DNS_LOCAL_IP6 - IPv6 address to bind DNS resolves to
SYNOPSIS
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_LOCAL_IP6, char *address);
DESCRIPTION
Set the local IPv6 address that the resolver should bind to. The argument should be of type char * and contain a single IPv6 address as a string. Set this option to NULL to use the default setting (do not bind to a specific IP address). The application does not have to keep the string around after setting this option.
DEFAULT
NULL
PROTOCOLS
This functionality affects all supported protocols
EXAMPLE
int main(void) { CURL *curl = curl_easy_init(); if(curl) { CURLcode res; curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin"); curl_easy_setopt(curl, CURLOPT_DNS_LOCAL_IP6, "fe80::a9ff:fe46:b619"); res = curl_easy_perform(curl); curl_easy_cleanup(curl); } }
NOTES
This option requires that libcurl was built with a resolver backend that supports this operation. The c-ares backend is the only such one.
AVAILABILITY
Added in curl 7.33.0
RETURN VALUE
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, CURLE_NOT_BUILT_IN if support was disabled at compile-time, or CURLE_BAD_FUNCTION_ARGUMENT when given a bad address.
SEE ALSO
CURLOPT_DNS_INTERFACE(3), CURLOPT_DNS_LOCAL_IP4(3), CURLOPT_DNS_SERVERS(3)