From 3decba3d32382e22357de4eb25da1aedf6462861 Mon Sep 17 00:00:00 2001
From: "Zhang, Lubo"
 <C:/Program Files (x86)/Git/o=Intel/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=Zhang, Lubob8d>
Date: Thu, 24 Mar 2016 16:45:32 +0800
Subject: [PATCH] NetworkPkg:Fix bug when parsing the dhcp6 option 16

when to parse the DHCP6 reply packet,there will be 6
bytes offset before the option data according to
RFC 3315.

Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Ye Ting <ting.ye@intel.com>
Cc: Wu Jiaxin <jiaxin.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Zhang Lubo <lubo.zhang@intel.com>
Reviewed-by: Reviewed-by: Hegde Nagaraj P <nagaraj-p.hegde@hpe.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Wu Jiaxin <jiaxin.wu@intel.com>
---
 NetworkPkg/HttpBootDxe/HttpBootDhcp6.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/NetworkPkg/HttpBootDxe/HttpBootDhcp6.c b/NetworkPkg/HttpBootDxe/HttpBootDhcp6.c
index d2960e4f6c..0157095edf 100644
--- a/NetworkPkg/HttpBootDxe/HttpBootDhcp6.c
+++ b/NetworkPkg/HttpBootDxe/HttpBootDhcp6.c
@@ -251,8 +251,8 @@ HttpBootParseDhcp6Packet (
   Option = Options[HTTP_BOOT_DHCP6_IDX_VENDOR_CLASS];
 
   if (Option != NULL &&
-      NTOHS(Option->OpLen) >= 10 &&
-      CompareMem (Option->Data, DEFAULT_CLASS_ID_DATA, 10) == 0) {
+      NTOHS(Option->OpLen) >= 16 &&
+      CompareMem ((Option->Data + 6), DEFAULT_CLASS_ID_DATA, 10) == 0) {
       IsHttpOffer = TRUE;
   }
 
-- 
2.39.2