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curl/docs/libcurl/opts/CURLOPT_DNS_LOCAL_IP6.3

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+.\" **************************************************************************
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+.\" *                             / __| | | | |_) | |
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+.\" *
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <[email protected]>, et al.
+.\" *
+.\" * This software is licensed as described in the file COPYING, which
+.\" * you should have received as part of this distribution. The terms
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+.\" * copies of the Software, and permit persons to whom the Software is
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+.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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+.\" *
+.\" **************************************************************************
+.\"
+.TH CURLOPT_DNS_LOCAL_IP6 3 "November 04, 2020" "libcurl 7.75.0" "curl_easy_setopt options"
+
+.SH NAME
+CURLOPT_DNS_LOCAL_IP6 \- IPv6 address to bind DNS resolves to
+.SH SYNOPSIS
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_LOCAL_IP6, char *address);
+.SH DESCRIPTION
+Set the local IPv6 \fIaddress\fP 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 (don't bind to a
+specific IP address).
+
+The application does not have to keep the string around after setting this
+option.
+.SH DEFAULT
+NULL
+.SH PROTOCOLS
+All
+.SH EXAMPLE
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
+  curl_easy_setopt(curl, CURLOPT_DNS_LOCAL_IP6, "fe80::a9ff:fe46:b619");
+  ret = curl_easy_perform(curl);
+  curl_easy_cleanup(curl);
+}
+.fi
+.SH AVAILABILITY
+This 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
+.SH 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.
+.SH "SEE ALSO"
+.BR CURLOPT_DNS_INTERFACE "(3), " CURLOPT_DNS_LOCAL_IP4 "(3), "