diff --git a/include/Makefile.in b/include/Makefile.in
index 401b02bd892..9f615cd7832 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -313,6 +313,7 @@ HEADER_SRCS = \
 	devguid.h \
 	devpkey.h \
 	devpropdef.h \
+	dhcpcsdk.h \
 	difxapi.h \
 	digitalv.h \
 	dinput.h \
diff --git a/include/dhcpcsdk.h b/include/dhcpcsdk.h
new file mode 100644
index 00000000000..93c7af6e083
--- /dev/null
+++ b/include/dhcpcsdk.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2017 Alistair Leslie-Hughes
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+#ifndef _DHCPCSDK_
+#define _DHCPCSDK_
+
+typedef struct _DHCPAPI_PARAMS
+{
+    ULONG  Flags;
+    ULONG  OptionId;
+    BOOL   IsVendor;
+    BYTE   *Data;
+    DWORD  nBytesData;
+} DHCPAPI_PARAMS, *PDHCPAPI_PARAMS, *LPDHCPAPI_PARAMS;
+
+typedef struct _DHCPAPI_PARAMS DHCPCAPI_PARAMS, *PDHCPCAPI_PARAMS, *LPDHCPCAPI_PARAMS;
+
+typedef struct _DHCPCAPI_PARAMS_ARARAY
+{
+    ULONG             nParams;
+    LPDHCPCAPI_PARAMS Params;
+} DHCPCAPI_PARAMS_ARRAY, *PDHCPCAPI_PARAMS_ARRAY, *LPDHCPCAPI_PARAMS_ARRAY;
+
+typedef struct _DHCPCAPI_CLASSID
+{
+    ULONG  Flags;
+    BYTE   *Data;
+    ULONG  nBytesData;
+} DHCPCAPI_CLASSID, *PDHCPCAPI_CLASSID, *LPDHCPCAPI_CLASSID;
+
+
+DWORD WINAPI DhcpRequestParams( DWORD flags, void *reserved, WCHAR *adaptername, DHCPCAPI_CLASSID *classid,
+                                DHCPCAPI_PARAMS_ARRAY sendparams, DHCPCAPI_PARAMS_ARRAY recdparams,
+                                BYTE *buffer, DWORD *size, WCHAR *requestidstr );
+
+#endif