3 files changed, 7 insertions, 4 deletions
diff --git a/NetworkPkg/Dhcp6Dxe/Dhcp6Dxe.inf b/NetworkPkg/Dhcp6Dxe/Dhcp6Dxe.inf
index 24cb9a9b64..40a6ee7889 100644
--- a/NetworkPkg/Dhcp6Dxe/Dhcp6Dxe.inf
+++ b/NetworkPkg/Dhcp6Dxe/Dhcp6Dxe.inf
@@ -5,7 +5,7 @@
 #  and other configuration parameters from DHCPv6 servers.
 #
 #  (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
-#  Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
 #
 #  This program and the accompanying materials
 #  are licensed and made available under the terms and conditions of the BSD License
@@ -74,6 +74,8 @@
   gEfiDhcp6ProtocolGuid                              ## BY_START
   gEfiIp6ConfigProtocolGuid                          ## TO_START
 
+[Guids]  
+  gZeroGuid                   ## SOMETIMES_CONSUMES   ## GUID
  
 [Pcd]
   gEfiNetworkPkgTokenSpaceGuid.PcdDhcp6UidType       ## SOMETIMES_CONSUMES
diff --git a/NetworkPkg/Dhcp6Dxe/Dhcp6Impl.h b/NetworkPkg/Dhcp6Dxe/Dhcp6Impl.h
index 86ef8afb29..06780b678a 100644
--- a/NetworkPkg/Dhcp6Dxe/Dhcp6Impl.h
+++ b/NetworkPkg/Dhcp6Dxe/Dhcp6Impl.h
@@ -1,7 +1,7 @@
 /** @file
   Dhcp6 internal data structure and definition declaration.
 
-  Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
 
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
@@ -37,6 +37,7 @@
 #include <Library/BaseLib.h>
 #include <Library/NetLib.h>
 #include <Library/PrintLib.h>
+#include <Guid/ZeroGuid.h>
 
 
 typedef struct _DHCP6_IA_CB    DHCP6_IA_CB;
diff --git a/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c b/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c
index 2525a32ff1..a65ed6d589 100644
--- a/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c
+++ b/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c
@@ -2,7 +2,7 @@
   Dhcp6 support functions implementation.
 
   (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
-  Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
 
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
@@ -64,7 +64,7 @@ Dhcp6GenerateClientId (
   //
   // If System UUID is found from SMBIOS Table, use DUID-UUID type.
   //
-  if ((PcdGet8 (PcdDhcp6UidType) == Dhcp6DuidTypeUuid) && !EFI_ERROR (NetLibGetSystemGuid (&Uuid))) {
+  if ((PcdGet8 (PcdDhcp6UidType) == Dhcp6DuidTypeUuid) && !EFI_ERROR (NetLibGetSystemGuid (&Uuid)) && !CompareGuid (&Uuid, &gZeroGuid)) {
     //
     //
     //  The format of DUID-UUID: