Update RTL_setups.md

RTL_setups.md

@@ -2,4 +2,19 @@
 
 #### RTL+LND running on the same device
 
-#### RTL and LND running on different devices
+#### RTL and LND running on different devices (Local LAN)
+If your running RTL and LND on different devices on your local LAN, certain config changes need to be made in LND and RTL conf files.
+1. A static IP address must be assigned to the device running LND
+2. `admin.macaroon` file must be transferred to the device on which you need to run RTL
+3. Add to your lnd.conf file under the [Application Options] section: `restlisten=<ip address of the device running LND>:8080`
+4. Restart LND
+5. Make the following changes to the RTL.conf file
+```
+[Authentication]
+macaroonPath=<Path of the folder containing 'admin.macaroon' on the device running RTL>
+nodeAuthType=CUSTOM
+rtlPass=<password in plain text>
+[Settings]
+lndServerUrl=https://ip-address-of-your-rpi:8080/v1
+```
+6. Restart RTL