diff --git a/lib/isc/win32/include/isc/platform.h b/lib/isc/win32/include/isc/platform.h
new file mode 100644
index 0000000000..29203722f0
--- /dev/null
+++ b/lib/isc/win32/include/isc/platform.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: platform.h,v 1.1 2001/07/06 05:59:09 mayer Exp $ */
+
+#ifndef ISC_PLATFORM_H
+#define ISC_PLATFORM_H 1
+
+/*****
+ ***** Platform-dependent defines.
+ *****/
+//#define ISC_PLATFORM_NEEDVSNPRINTF
+#define ISC_PLATFORM_USETHREADS
+/***
+ *** Network.
+ ***/
+#define ISC_PLATFORM_HAVEIPV6
+//#define ISC_PLATFORM_NEEDIN6ADDRANY
+#define ISC_PLATFORM_NEEDPORTT
+#undef MSG_TRUNC
+#define ISC_PLATFORM_NEEDNTOP
+#define ISC_PLATFORM_NEEDPTON
+#define ISC_PLATFORM_NEEDATON
+//#define ISC_NET_BSD44MSGHDR
+
+#define ISC_PLATFORM_QUADFORMAT "I64"
+
+#define ISC_PLATFORM_NEEDSTRSEP
+
+#endif /* ISC_PLATFORM_H */