1 files changed, 9 insertions, 1 deletions
diff --git a/NetworkPkg/HttpBootDxe/HttpBootDhcp6.c b/NetworkPkg/HttpBootDxe/HttpBootDhcp6.c
index b22cef4ff5..f964515b0f 100644
--- a/NetworkPkg/HttpBootDxe/HttpBootDhcp6.c
+++ b/NetworkPkg/HttpBootDxe/HttpBootDhcp6.c
@@ -2,6 +2,7 @@
   Functions implementation related with DHCPv6 for HTTP boot driver.
 
 Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
+Copyright (c) Microsoft Corporation
 SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
@@ -951,6 +952,7 @@ HttpBootDhcp6Sarr (
   UINT32                    OptCount;
   UINT8                     Buffer[HTTP_BOOT_DHCP6_OPTION_MAX_SIZE];
   EFI_STATUS                Status;
+  UINT32                    Random;
 
   Dhcp6 = Private->Dhcp6;
   ASSERT (Dhcp6 != NULL);
@@ -961,6 +963,12 @@ HttpBootDhcp6Sarr (
   OptCount = HttpBootBuildDhcp6Options (Private, OptList, Buffer);
   ASSERT (OptCount > 0);
 
+  Status = PseudoRandomU32 (&Random);
+  if (EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_ERROR, "%a failed to generate random number: %r\n", __func__, Status));
+    return Status;
+  }
+
   Retransmit = AllocateZeroPool (sizeof (EFI_DHCP6_RETRANSMISSION));
   if (Retransmit == NULL) {
     return EFI_OUT_OF_RESOURCES;
@@ -976,7 +984,7 @@ HttpBootDhcp6Sarr (
   Config.IaInfoEvent           = NULL;
   Config.RapidCommit           = FALSE;
   Config.ReconfigureAccept     = FALSE;
-  Config.IaDescriptor.IaId     = NET_RANDOM (NetRandomInitSeed ());
+  Config.IaDescriptor.IaId     = Random;
   Config.IaDescriptor.Type     = EFI_DHCP6_IA_TYPE_NA;
   Config.SolicitRetransmission = Retransmit;
   Retransmit->Irt              = 4;