diff --git a/NetworkPkg/DnsDxe/DnsImpl.c b/NetworkPkg/DnsDxe/DnsImpl.c
index b196d181ca..42d51f0ed7 100644
--- a/NetworkPkg/DnsDxe/DnsImpl.c
+++ b/NetworkPkg/DnsDxe/DnsImpl.c
@@ -1574,8 +1574,8 @@ ConstructDNSQueryIp (
   //
   // Fill header
   //
-  DnsHeader = (DNS_HEADER *)Frag.Bulk; 
-  DnsHeader->Identification = (UINT16)AsmReadTsc ();
+  DnsHeader = (DNS_HEADER *) Frag.Bulk; 
+  DnsHeader->Identification = (UINT16)NET_RANDOM (NetRandomInitSeed());
   DnsHeader->Flags.Uint16 = 0x0000;
   DnsHeader->Flags.Bits.RD = 1;
   DnsHeader->Flags.Bits.OpCode = DNS_FLAGS_OPCODE_STANDARD;
@@ -1585,12 +1585,12 @@ ConstructDNSQueryIp (
   DnsHeader->AuthorityNum = 0;
   DnsHeader->AditionalNum = 0;
 
-  DnsHeader->Identification = HTONS(DnsHeader->Identification);
-  DnsHeader->Flags.Uint16 = HTONS(DnsHeader->Flags.Uint16);
-  DnsHeader->QuestionsNum = HTONS(DnsHeader->QuestionsNum);
-  DnsHeader->AnswersNum = HTONS(DnsHeader->AnswersNum);
-  DnsHeader->AuthorityNum = HTONS(DnsHeader->AuthorityNum);
-  DnsHeader->AditionalNum = HTONS(DnsHeader->AditionalNum);
+  DnsHeader->Identification = HTONS (DnsHeader->Identification);
+  DnsHeader->Flags.Uint16 = HTONS (DnsHeader->Flags.Uint16);
+  DnsHeader->QuestionsNum = HTONS (DnsHeader->QuestionsNum);
+  DnsHeader->AnswersNum = HTONS (DnsHeader->AnswersNum);
+  DnsHeader->AuthorityNum = HTONS (DnsHeader->AuthorityNum);
+  DnsHeader->AditionalNum = HTONS (DnsHeader->AditionalNum);
 
   Frag.Len = sizeof (*DnsHeader);
 
diff --git a/NetworkPkg/HttpBootDxe/HttpBootDhcp4.h b/NetworkPkg/HttpBootDxe/HttpBootDhcp4.h
index 42a3874444..47e07aaa85 100644
--- a/NetworkPkg/HttpBootDxe/HttpBootDhcp4.h
+++ b/NetworkPkg/HttpBootDxe/HttpBootDhcp4.h
@@ -82,6 +82,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #define EFI_HTTP_BOOT_CLIENT_SYSTEM_ARCHITECTURE    0x0012
 #elif defined (MDE_CPU_AARCH64)
 #define EFI_HTTP_BOOT_CLIENT_SYSTEM_ARCHITECTURE    0x0013
+#elif defined (MDE_CPU_EBC)
+#define EFI_HTTP_BOOT_CLIENT_SYSTEM_ARCHITECTURE    0x0011
 #endif
 
 /// DHCP offer types among HTTP boot.