CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_LOCAL_IP4, char *address);
DESCRIPTIONSet the local IPv4 address that the resolver should bind to. The argument should be of type char * and contain a single numerical IPv4 address as a string. Set this option to NULL to use the default setting (don't bind to a specific IP address).
AVAILABILITYThis option requires that libcurl was built with a resolver backend that supports this operation. The c-ares backend is the only such one.
Added in 7.33.0