configuration: add address page

en/docs/config/dns64.md

@@ -9,7 +9,7 @@ DNS64 is used to support accessing IPV4 websites in a pure IPV6 network, smartdn
 
 ## Configuration Steps
 
-1. Use `dns64 ip/mask` to configure the proxy server
+1. Use `dns64 ip/mask` to configure alias name.
 
     ```shell
     dns64 64:ff9b::/96

en/docs/config/domain-address.md

@@ -0,0 +1,37 @@
+---
+hide:
+  - toc
+---
+
+# Specify Domain Address
+
+In addition to blocking ads, `address` can also be used to specify the IP address of a domain.
+
+## Basic Configuration Method
+
+1. Use the `address /domain/ip` option to specify the IP, such as:
+
+    ```shell
+    address /example.com/1.2.3.4
+    ```
+
+    In the `address` option:
+
+    * `/domain/` uses suffix matching algorithm, including subdomains.
+    * `ip`: can be an IPv6 or IPv4 address.
+
+1. Specify IPv6
+
+    ```shell
+    address /example.com/::1
+    ```
+
+## Automatically Expand PTR Records Corresponding to address
+
+If you want to expand the PTR record corresponding to the above `address`, you can use the `expand-ptr-from-address` switch to turn on automatic expansion. The `expand-ptr-from-address` parameter can be set repeatedly, and the parameter takes effect for the `address` set after it.
+
+```shell
+expand-ptr-from-address yes
+address /example.com/1.2.3.4
+expand-ptr-from-address no
+```