CURLOPT_DNS_LOCAL_IP6(3) on macOS
The text 9baa0226e3c8, as macOS 10.12.5, macOS 10.12.4, macOS 10.12.3, macOS 10.12.2, macOS 10.12.1, macOS 10.12 shipped it.
IPv6 address to bind DNS resolves to
The text 9baa0226e3c8, as macOS 10.12.5, macOS 10.12.4, macOS 10.12.3, macOS 10.12.2, macOS 10.12.1, macOS 10.12 shipped it.
IPv6 address to bind DNS resolves to