diff --git a/portnums.proto b/portnums.proto
index b017d3b..79b4a34 100644
--- a/portnums.proto
+++ b/portnums.proto
@@ -10,7 +10,8 @@ syntax = "proto3";
   0-63   Core Meshtastic use, do not use for third party apps
   64-127 Registered 3rd party apps, send in a pull request that adds a new entry to portnums.proto to 
          register your application
-  256-512 Use one of these portnums for your private applications that you don't want to register publically
+  256-511 Use one of these portnums for your private applications that you don't want to register publically
+  1024-66559 Are reserved for use by IP tunneling (see FIXME for more information)
 
   All other values are reserved.
 
@@ -43,9 +44,10 @@ enum PortNum {
     GPIO_APP = 2;
     GPS_POSITION_APP = 3;
     MESH_USERINFO_APP = 4;
-    IP_TUNNEL_APP = 5;
 
     /// Private applications should use portnums >= 256.  To simplify initial development and testing you can use "PRIVATE_APP"
     /// in your code without needing to rebuild protobuf files (via bin/regin_protos.sh)
     PRIVATE_APP = 256;
+
+    IP_TUNNEL_APP = 1024;
   }
\ No newline at end of file