Index: /trunk/src/VBox/Devices/Network/DrvIntNet.cpp
===================================================================
--- /trunk/src/VBox/Devices/Network/DrvIntNet.cpp	(revision 29597)
+++ /trunk/src/VBox/Devices/Network/DrvIntNet.cpp	(revision 29598)
@@ -1522,5 +1522,5 @@
     GetBufferPtrsReq.hIf = pThis->hIf;
     GetBufferPtrsReq.pRing3Buf = NULL;
-    GetBufferPtrsReq.pRing0Buf = NULL;
+    GetBufferPtrsReq.pRing0Buf = NIL_RTR0PTR;
     rc = PDMDrvHlpSUPCallVMMR0Ex(pDrvIns, VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS, &GetBufferPtrsReq, sizeof(GetBufferPtrsReq));
     if (RT_FAILURE(rc))