diff -r ef0373b55136 -r 758a864f9613 src/network/socket/qnativesocketengine_win.cpp
--- a/src/network/socket/qnativesocketengine_win.cpp	Fri Sep 17 08:34:18 2010 +0300
+++ b/src/network/socket/qnativesocketengine_win.cpp	Mon Oct 04 01:19:32 2010 +0300
@@ -207,6 +207,7 @@
     if (address.protocol() == QAbstractSocket::IPv6Protocol) {
         memset(sockAddrIPv6, 0, sizeof(qt_sockaddr_in6));
         sockAddrIPv6->sin6_family = AF_INET6;
+        sockAddrIPv6->sin6_scope_id = address.scopeId().toInt();
         WSAHtons(socketDescriptor, port, &(sockAddrIPv6->sin6_port));
         Q_IPV6ADDR tmp = address.toIPv6Address();
         memcpy(&(sockAddrIPv6->sin6_addr.qt_s6_addr), &tmp, sizeof(tmp));