diff --git a/snmplib/transports/snmpUDPIPv6Domain.c b/snmplib/transports/snmpUDPIPv6Domain.c
index e6f5b20..41a5e01 100644
--- a/snmplib/transports/snmpUDPIPv6Domain.c
+++ b/snmplib/transports/snmpUDPIPv6Domain.c
@@ -34,6 +34,11 @@
 #if HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
+
+#if defined(HAVE_WINSOCK_H) && !defined(mingw32)
+static const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
+#endif
+
 #if HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif