Update server-maintenance.md

docs/en/server/server-maintenance.md

@@ -21,6 +21,7 @@ The config has one section by default, called `[General]`, which holds the follo
 | AllowGuests 		| true/false																										   | Determines wether guests are allowed to join the server or not.																															 |
 | LogChat	  		| true/false																										   | When enabled (true), chat messages are logged in the server.log file.																													     |
 | Debug       		| true /false                                                                                                          | When enabled (true), will show more messages in the log and provide more information. Enable this if you run into issues. Enabling this will drastically increase the size of the log file. |
+| IP				| A local class IPv4 address of one of the NICs connected to the host.  											   | The server will try to bind to the supplied IP. Please do not mess with the IP field unless you know what you are doing.																	 |
 | Private     		| true/false                                                                                                           | When enabled (true), your server will not be shown in the server list. Anyone with the correct IP and port can still connect.                                                               |
 | InformationPacket | true/false																										   | When enabled (true), the server is going to allow unauthenticated clients to get the same info as on the server listing but directly via the server.										 |
 | Name        		| Any "text"                                                                                                           | Shown as the name / title of your server in the server list. You can use special characters to format this with colors and styles.                                                          |