diff --git a/src/xenia/kernel/xam_net.cc b/src/xenia/kernel/xam_net.cc
index dcf72f074..3133b4311 100644
--- a/src/xenia/kernel/xam_net.cc
+++ b/src/xenia/kernel/xam_net.cc
@@ -35,7 +35,8 @@ SHIM_CALL NetDll_XNetStartup_shim(
       arg0,
       params_ptr);
 
-  SHIM_SET_RETURN_64(0);
+  // Fail for now.
+  SHIM_SET_RETURN_64(1);
 }
 
 SHIM_CALL NetDll_WSAStartup_shim(
@@ -60,13 +61,25 @@ SHIM_CALL NetDll_WSAStartup_shim(
     SHIM_SET_MEM_32(data_ptr + 0x190, 0);
   }
 
-  SHIM_SET_RETURN_64(0);
+  // Fail for now. This prevents games from actually trying to use this stuff.
+  SHIM_SET_RETURN_64(1);
 }
 
 SHIM_CALL NetDll_WSAGetLastError_shim(
     PPCContext* ppc_state, KernelState* state) {
   XELOGD("NetDll_WSAGetLastError()");
-  SHIM_SET_RETURN_32(WSAENETDOWN);
+  SHIM_SET_RETURN_32(10093L);  // WSANOTINITIALISED
+}
+
+SHIM_CALL NetDll_XNetGetTitleXnAddr_shim(
+    PPCContext* ppc_state, KernelState* state) {
+  uint32_t arg0 = SHIM_GET_ARG_32(0);
+  uint32_t arg1 = SHIM_GET_ARG_32(1);
+  XELOGD(
+      "NetDll_XNetGetTitleXnAddr(%d, %.8X)",
+      arg0,
+      arg1);
+  SHIM_SET_RETURN_32(0x00000001);
 }
 
 SHIM_CALL NetDll_XNetGetEthernetLinkStatus_shim(
@@ -86,7 +99,7 @@ SHIM_CALL NetDll_inet_addr_shim(
   XELOGD(
       "NetDll_inet_addr(%.8X)",
       cp_ptr);
-  SHIM_SET_RETURN_32(INADDR_NONE);
+  SHIM_SET_RETURN_32(0xFFFFFFFF); // X_INADDR_NONE
 }
 
 SHIM_CALL NetDll_socket_shim(
@@ -101,7 +114,7 @@ SHIM_CALL NetDll_socket_shim(
       af,
       type,
       protocol);
-  SHIM_SET_RETURN_32(SOCKET_ERROR);
+  SHIM_SET_RETURN_32(X_SOCKET_ERROR);
 }
 
 SHIM_CALL NetDll_setsockopt_shim(
@@ -120,7 +133,7 @@ SHIM_CALL NetDll_setsockopt_shim(
       optname,
       optval_ptr,
       optlen);
-  SHIM_SET_RETURN_32(SOCKET_ERROR);
+  SHIM_SET_RETURN_32(X_SOCKET_ERROR);
 }
 
 SHIM_CALL NetDll_connect_shim(
@@ -133,7 +146,7 @@ SHIM_CALL NetDll_connect_shim(
       socket_ptr,
       sockaddr_ptr,
       namelen);
-  SHIM_SET_RETURN_32(SOCKET_ERROR);
+  SHIM_SET_RETURN_32(X_SOCKET_ERROR);
 }
 
 SHIM_CALL NetDll_recv_shim(
@@ -150,7 +163,7 @@ SHIM_CALL NetDll_recv_shim(
       buf_ptr,
       len,
       flags);
-  SHIM_SET_RETURN_32(SOCKET_ERROR);
+  SHIM_SET_RETURN_32(X_SOCKET_ERROR);
 }
 
 SHIM_CALL NetDll_recvfrom_shim(
@@ -171,7 +184,7 @@ SHIM_CALL NetDll_recvfrom_shim(
       flags,
       from_ptr,
       fromlen_ptr);
-  SHIM_SET_RETURN_32(SOCKET_ERROR);
+  SHIM_SET_RETURN_32(X_SOCKET_ERROR);
 }
 
 SHIM_CALL NetDll_send_shim(
@@ -188,7 +201,7 @@ SHIM_CALL NetDll_send_shim(
       buf_ptr,
       len,
       flags);
-  SHIM_SET_RETURN_32(SOCKET_ERROR);
+  SHIM_SET_RETURN_32(X_SOCKET_ERROR);
 }
 
 
@@ -201,6 +214,7 @@ void xe::kernel::xam::RegisterNetExports(
   SHIM_SET_MAPPING("xam.xex", NetDll_XNetStartup, state);
   SHIM_SET_MAPPING("xam.xex", NetDll_WSAStartup, state);
   SHIM_SET_MAPPING("xam.xex", NetDll_WSAGetLastError, state);
+  SHIM_SET_MAPPING("xam.xex", NetDll_XNetGetTitleXnAddr, state);
   SHIM_SET_MAPPING("xam.xex", NetDll_XNetGetEthernetLinkStatus, state);
   SHIM_SET_MAPPING("xam.xex", NetDll_inet_addr, state);
   SHIM_SET_MAPPING("xam.xex", NetDll_socket, state);
diff --git a/src/xenia/xbox.h b/src/xenia/xbox.h
index 85ad57a41..fcf079751 100644
--- a/src/xenia/xbox.h
+++ b/src/xenia/xbox.h
@@ -116,6 +116,11 @@ typedef uint32_t X_RESULT;
 #define X_PROCTYPE_SYSTEM 2
 
 
+// Sockets/networking.
+#define X_INVALID_SOCKET          (uint32_t)(~0)
+#define X_SOCKET_ERROR            (uint32_t)(-1)
+
+
 // Thread enums.
 #define X_CREATE_SUSPENDED        0x00000004