add IP stack simulator

system/config.json

@@ -3,13 +3,31 @@
 
   // Server's name (maximum 16 characters)
   "ServerName": "Alexandria",
+
   // Address to connect local clients to (IP address or interface name)
   "LocalAddress": "192.168.0.5",
   // Address to connect external clients to (IP address or interface name)
   "ExternalAddress": "en0",
+
   // Port to listen for DNS queries on. Set this to zero (or comment it out) to
   // disable the DNS server.
   "DNSServerPort": 53,
+
+  // Where to listen for IP stack clients. This exists to interface with PSO GC
+  // clients running in a local Dolphin emulator. To enable local Dolphin
+  // clients to connect, set this to ["/tmp/dolphin-tap"] and configure Dolphin
+  // to use the tapserver type of broadband adapter. You do not need to install
+  // or run tapserver. See README.md for details on how to get PSO to connect
+  // via this interface.
+  // If you're doing inadvisable things, you can also add numbers or
+  // "address:port" strings to this list to listen for tapserver connections on
+  // a TCP port.
+  // "IPStackListen": ["/tmp/dolphin-tap"],
+
+  // Set this to true to show a lot of debugging information from the IP stack
+  // simulator.
+  // "IPStackDebug": true,
+
   // By default, the interactive shell runs if stdin is a terminal, and doesn't
   // run if it's not. This option, if present, overrides that behavior.
   // "RunInteractiveShell": false,