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diff --git a/public/sdk/inc/nspapip.h b/public/sdk/inc/nspapip.h
new file mode 100644
index 000000000..f6a450178
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+++ b/public/sdk/inc/nspapip.h
@@ -0,0 +1,149 @@
+/*++
+
+Copyright (c) 1991-1994  Microsoft Corporation
+
+Module Name:
+
+    nspapip.h
+
+Abstract:
+
+    Internel Name Space Provider API prototypes and manifests.  This 
+    header file should only be included by name space providers.  NSPAPI 
+    users should include only nspapi.h See the "Windows NT NameSpace 
+    Provider Specification" document for details.  
+    
+
+Author:
+
+    David Treadwell (davidtr)   28-Apr-1994
+
+Environment:
+
+    User Mode -Win32
+
+Notes:
+
+Revision History:
+
+    28-Apr-1994     DavidTr      Created first cut.
+
+--*/
+
+#ifndef _NSPAPIP_INCLUDED
+#define _NSPAPIP_INCLUDED
+
+//
+// Standard priority values for the dwPriority field of NS_ROUTINE.
+//
+#define NS_STANDARD_FAST_PRIORITY   (500)
+#define NS_MAX_FAST_PRIORITY        (999)
+#define NS_STANDARD_PRIORITY        (2000)
+
+//
+// Indices for the alpfnFunctions array field of NS_ROUTINE.
+//
+#define NSPAPI_GET_ADDRESS_BY_NAME  (0x00000000)
+#define NSPAPI_GET_SERVICE          (0x00000001)
+#define NSPAPI_SET_SERVICE          (0x00000002)
+
+//
+// Structures used by the provider interface.
+//
+
+typedef
+INT
+(APIENTRY *LPGET_ADDR_BY_NAME_PROC) (
+    IN     LPGUID          lpServiceType,
+    IN     LPWSTR          lpServiceName,
+    IN     LPDWORD         lpdwProtocols,
+    IN     DWORD           dwResolution,
+    IN     OUT LPVOID      lpCsaddrBuffer,
+    IN     OUT LPDWORD     lpdwBufferLength,
+    IN OUT LPWSTR          lpAliasBuffer,
+    IN OUT LPDWORD         lpdwAliasBufferLength,
+    IN     HANDLE          hCancellationEvent
+    );
+
+typedef struct _NS_ROUTINE {
+    DWORD        dwFunctionCount;
+    LPFN_NSPAPI *alpfnFunctions;
+    DWORD        dwNameSpace;
+    DWORD        dwPriority;
+} NS_ROUTINE, *PNS_ROUTINE, * FAR LPNS_ROUTINE;
+
+typedef
+DWORD
+
+(APIENTRY *LPLOAD_NAME_SPACE_PROC) (
+    IN OUT LPDWORD         lpdwVersion,
+    IN OUT LPNS_ROUTINE    nsrBuffer,
+    IN OUT LPDWORD         lpdwBufferLength
+    );
+
+typedef
+INT
+(APIENTRY *LPGET_SERVICE_PROC) (
+    IN     LPGUID          lpServiceType,
+    IN     LPWSTR          lpServiceName,
+    IN     DWORD           dwProperties,
+    IN     BOOL            fUnicodeBlob,
+    OUT    LPSERVICE_INFO  lpServiceInfo,
+    IN OUT LPDWORD         lpdwBufferLen
+    );
+
+typedef
+DWORD
+(APIENTRY *LPSET_SERVICE_PROC) (
+    IN     DWORD           dwOperation,
+    IN     DWORD           dwFlags,
+    IN     BOOL            fUnicodeBlob,
+    IN     LPSERVICE_INFO  lpServiceInfo
+    );
+
+//
+// Internal Functions
+//
+DWORD
+APIENTRY
+NPGetService (
+    IN     LPGUID          lpServiceType,
+    IN     LPWSTR          lpServiceName,
+    IN     DWORD           dwProperties,
+    IN     BOOL            fUnicodeBlob,
+    OUT    LPSERVICE_INFO  lpServiceInfo,
+    IN OUT LPDWORD         lpdwBufferLen
+    );
+
+DWORD
+APIENTRY
+NPSetService (
+    IN     DWORD           dwOperation,
+    IN     DWORD           dwFlags,
+    IN     BOOL            fUnicodeBlob,
+    IN     LPSERVICE_INFO  lpServiceInfo
+    );
+
+INT
+APIENTRY
+NPGetAddressByName (
+    IN     LPGUID          lpServiceType,
+    IN     LPWSTR          lpServiceName,
+    IN     LPDWORD         lpdwProtocols,
+    IN     DWORD           dwResolution,
+    IN OUT LPVOID          lpCsaddrBuffer,
+    IN OUT LPDWORD         lpdwBufferLength,
+    IN OUT LPWSTR          lpAliasBuffer,
+    IN OUT LPDWORD         lpdwAliasBufferLength,
+    IN     HANDLE          hCancellationEvent
+    );
+
+INT
+APIENTRY
+NPLoadNameSpaces (
+    IN OUT LPDWORD         lpdwVersion,
+    IN OUT LPNS_ROUTINE    nsrBuffer,
+    IN OUT LPDWORD         lpdwBufferLength
+    );
+
+#endif  // _NSPAPIP_INCLUDED