CURLOPT_DNS_INTERFACE - interface to speak DNS over
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_INTERFACE, char *ifname);
CURLOPT_DNS_INTERFACE(3) curl_easy_setopt options CURLOPT_DNS_INTERFACE(3)
NAME
CURLOPT_DNS_INTERFACE - 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 (do not
bind to a specific interface).
The application does not have to keep the string around after setting
this option.
DEFAULT
NULL
PROTOCOLS
EXAMPLE
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
curl_easy_setopt(curl, CURLOPT_DNS_INTERFACE, "eth0");
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
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.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | web/curl |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
SEE ALSO
CURLOPT_DNS_SERVERS(3), CURLOPT_DNS_LOCAL_IP4(3),
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from https://curl.se/down-
load/curl-7.83.1.tar.bz2.
Further information about this software can be found on the open source
community website at http://curl.haxx.se/.
libcurl 7.83.1 November 26, 2021 CURLOPT_DNS_INTERFACE(3)