1 files changed, 7 insertions, 0 deletions
diff --git a/syshead.h b/syshead.h
index 30ff556..d589531 100644
--- a/syshead.h
+++ b/syshead.h
@@ -28,6 +28,10 @@
 /*
  * Only include if not during configure
  */
+#ifdef WIN32
+/* USE_PF_INET6: win32 ipv6 exists only after 0x0501 (XP) */
+#define WINVER 0x0501
+#endif
 #ifndef PACKAGE_NAME
 #include "config.h"
 #endif
@@ -339,6 +343,9 @@
 #ifdef WIN32
 #include <iphlpapi.h>
 #include <wininet.h>
+/* The following two headers are needed of USE_PF_INET6 */
+#include <winsock2.h>
+#include <ws2tcpip.h>
 #endif
 
 #ifdef HAVE_SYS_MMAN_H