02-25-2011
You need to unplumb the interface first. Then plumb the interface again followed by setting IP address, etc.
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LEARN ABOUT MOJAVE
curlopt_dns_interface
CURLOPT_DNS_INTERFACE(3) curl_easy_setopt options CURLOPT_DNS_INTERFACE(3)
NAME
CURLOPT_DNS_INTERFACE - set interface to speak DNS over
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_INTERFACE, char *ifname);
DESCRIPTION
Pass a char * as parameter. Set the name of the network interface that the DNS resolver should bind to. This must be an interface name (not
an address). Set this option to NULL to use the default setting (don't bind to a specific interface).
The application does not have to keep the string around after setting this option.
DEFAULT
NULL
PROTOCOLS
EXAMPLE
TODO
AVAILABILITY
Added in 7.33.0. This option also requires that libcurl was built with a resolver backend that supports this operation. The c-ares backend
is the only such one.
RETURN VALUE
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_NOT_BUILT_IN if support was disabled at compile-time.
SEE ALSO
CURLOPT_DNS_SERVERS(3), CURLOPT_DNS_LOCAL_IP4(3),
libcurl 7.54.0 December 21, 2016 CURLOPT_DNS_INTERFACE(3)