Add redir tproxy and dns inbound

docs/configuration/inbound/dns.md

@@ -0,0 +1,44 @@
+`dns` inbound is a DNS server.
+
+### Structure
+
+```json
+{
+  "inbounds": [
+    {
+      "type": "dns",
+      "tag": "dns-in",
+      
+      "listen": "::",
+      "listen_port": 5353,
+      "network": "udp"
+    }
+  ]
+}
+```
+
+!!! note ""
+    
+    There are no outbound connections by the DNS inbound, all requests are handled internally.
+
+### Listen Fields
+
+#### listen
+
+==Required==
+
+Listen address.
+
+#### listen_port
+
+==Required==
+
+Listen port.
+
+### DNS Fields
+
+#### network
+
+Listen network, one of `tcp` `udp`.
+
+Both if empty.