diff --git a/src/mingw-w64-2-netioapi-winxp.patch b/src/mingw-w64-2-netioapi-winxp.patch
new file mode 100644
index 00000000..7b13a5ad
--- /dev/null
+++ b/src/mingw-w64-2-netioapi-winxp.patch
@@ -0,0 +1,29 @@
+This file is part of MXE.
+See index.html for further information.
+
+Some functions in netioapi.h were only added in Windows Vista. This patch removes
+function definitions for if_nametoindex and if_indextoname on older API
+versions, so they don't conflict with replacement implementations in libraries
+(e.g. glib).
+
+This is fixed on the 4.x branch of mingw-w64.
+
+diff -Naur mingw-w64-v3.3.0.orig/mingw-w64-headers/include/netioapi.h mingw-w64-v3.3.0/mingw-w64-headers/include/netioapi.h
+--- mingw-w64-v3.3.0.orig/mingw-w64-headers/include/netioapi.h	2015-01-17 00:07:51.030935703 +0100
++++ mingw-w64-v3.3.0/mingw-w64-headers/include/netioapi.h	2015-01-17 01:09:47.546591536 +0100
+@@ -311,6 +311,7 @@
+   PNET_LUID InterfaceLuid
+ );
+ 
++#if (_WIN32_WINNT >= 0x0600)
+ PCHAR WINAPI if_indextoname(
+   NET_IFINDEX InterfaceIndex,
+   PCHAR InterfaceName
+@@ -319,6 +320,7 @@
+ NET_IFINDEX WINAPI if_nametoindex(
+   PCSTR InterfaceName
+ );
++#endif
+ 
+ NETIO_STATUS WINAPI ConvertInterfaceGuidToLuid(
+   const GUID *InterfaceGuid,