Index: /trunk/src/VBox/Devices/Network/slirp/slirp.c
===================================================================
--- /trunk/src/VBox/Devices/Network/slirp/slirp.c	(revision 54109)
+++ /trunk/src/VBox/Devices/Network/slirp/slirp.c	(revision 54110)
@@ -2116,5 +2116,5 @@
 
     if (pData->fUseDnsProxy) {
-#if HAVE_NOTIFICATION_FOR_DNS_UPDATE
+#if HAVE_NOTIFICATION_FOR_DNS_UPDATE /* XXX */ && !defined(RT_OS_WINDOWS)
         /* We dont conflict with bootp.c::dhcp_decode */
         struct rcp_state rcp_state;