Add netns and unshare support

docs/configuration/inbound/tun.md

@@ -7,7 +7,8 @@ icon: material/new-box
     :material-plus: [include_mac_address](#include_mac_address)  
     :material-plus: [exclude_mac_address](#exclude_mac_address)  
     :material-plus: [dns_mode](#dns_mode)  
-    :material-plus: [dns_address](#dns_address)
+    :material-plus: [dns_address](#dns_address)  
+    :material-plus: [netns](#netns)
 
 !!! quote "Changes in sing-box 1.13.3"
 
@@ -197,6 +198,22 @@ icon: material/new-box
 
 Virtual device name, automatically selected if empty.
 
+#### netns
+
+!!! question "Since sing-box 1.14.0"
+
+!!! quote ""
+
+    Only supported on Linux.
+
+Create the tun interface in the specified network namespace, name, path, or the tag of a
+[network namespace](/configuration/network-namespace/).
+
+When set, `auto_route` and `auto_redirect` operate inside the namespace, and no root privilege is
+required if the namespace is owned by the current user.
+
+Conflict with `platform`.
+
 #### address
 
 !!! question "Since sing-box 1.10.0"

docs/configuration/inbound/tun.zh.md

@@ -7,7 +7,8 @@ icon: material/new-box
     :material-plus: [include_mac_address](#include_mac_address)  
     :material-plus: [exclude_mac_address](#exclude_mac_address)  
     :material-plus: [dns_mode](#dns_mode)  
-    :material-plus: [dns_address](#dns_address)
+    :material-plus: [dns_address](#dns_address)  
+    :material-plus: [netns](#netns)
 
 !!! quote "sing-box 1.13.3 中的更改"
 
@@ -199,6 +200,20 @@ icon: material/new-box
 
 虚拟设备名称，默认自动选择。
 
+#### netns
+
+!!! question "自 sing-box 1.14.0 起"
+
+!!! quote ""
+
+    仅支持 Linux。
+
+在指定的网络命名空间中创建 tun 接口，可以是名称、路径，或[网络命名空间](/zh/configuration/network-namespace/)的标签。
+
+设置后，`auto_route` 和 `auto_redirect` 在该命名空间内生效；若命名空间归当前用户所有，则无需 root 权限。
+
+与 `platform` 冲突。
+
 #### address
 
 !!! question "自 sing-box 1.10.0 起"