en: update document.

2023-03-26 02:02:54 +08:00
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+---
+hide:
+  - toc
+---
+
+# DNS64
+
+DNS64 is used to support accessing IPV4 websites in a pure IPV6 network, smartdns also provides support for this, and can use the dns64 parameter to configure the DNS64 server.
+
+## Configuration Steps
+
+1. Use `dns64 ip/mask` to configure the proxy server
+
+    ```shell
+    dns64 64:ff9b::/96
+    ```
+
+1. In a pure IPV6 environment, it is recommended to disable the dual stack optimization function.
+
+    ```shell
+    dualstack-ip-selection no
+    ```