diff --git a/MdeModulePkg/Universal/Network/MnpDxe/MnpIo.c b/MdeModulePkg/Universal/Network/MnpDxe/MnpIo.c
index 0945c64694..0347dc7f1f 100644
--- a/MdeModulePkg/Universal/Network/MnpDxe/MnpIo.c
+++ b/MdeModulePkg/Universal/Network/MnpDxe/MnpIo.c
@@ -1042,9 +1042,12 @@ MnpCheckPacketTimeout (
 
       RxDataWrap = NET_LIST_USER_STRUCT (RxEntry, MNP_RXDATA_WRAP, WrapEntry);
 
-      if (RxDataWrap->TimeoutTick >= MNP_TIMEOUT_CHECK_INTERVAL) {
+      //
+      // TimeoutTick unit is ms, MNP_TIMEOUT_CHECK_INTERVAL unit is 100ns.
+      //
+      if (RxDataWrap->TimeoutTick >= (MNP_TIMEOUT_CHECK_INTERVAL / 10)) {
 
-        RxDataWrap->TimeoutTick -= MNP_TIMEOUT_CHECK_INTERVAL;
+        RxDataWrap->TimeoutTick -= (MNP_TIMEOUT_CHECK_INTERVAL / 10);
       } else {
         //
         // Drop the timeout packet.
diff --git a/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Impl.c b/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Impl.c
index 4c7a6fdc33..bda2b36c31 100644
--- a/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Impl.c
+++ b/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Impl.c
@@ -451,13 +451,16 @@ Udp4CheckTimeout (
       //
       Wrap = NET_LIST_USER_STRUCT (WrapEntry, UDP4_RXDATA_WRAP, Link);
 
-      if (Wrap->TimeoutTick <= UDP4_TIMEOUT_INTERVAL / 10) {
+      //
+      // TimeoutTick unit is ms, MNP_TIMEOUT_CHECK_INTERVAL unit is 100ns.
+      //
+      if (Wrap->TimeoutTick <= (UDP4_TIMEOUT_INTERVAL / 10)) {
         //
         // Remove this RxData if it timeouts.
         //
         Udp4RecycleRxDataWrap (NULL, (VOID *) Wrap);
       } else {
-        Wrap->TimeoutTick -= UDP4_TIMEOUT_INTERVAL / 10;
+        Wrap->TimeoutTick -= (UDP4_TIMEOUT_INTERVAL / 10);
       }
     }
   }
diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
index 845b7c0fd6..218ec43571 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDriver.c
@@ -318,7 +318,7 @@ PxeBcDriverBindingStart (
     goto ON_ERROR;
   }
   ZeroMem (&Private->Udp4CfgData, sizeof (EFI_UDP4_CONFIG_DATA));
-  Private->Udp4CfgData.AcceptBroadcast    = FALSE;
+  Private->Udp4CfgData.AcceptBroadcast    = TRUE;
   Private->Udp4CfgData.AcceptPromiscuous  = FALSE;
   Private->Udp4CfgData.AcceptAnyPort      = TRUE;
   Private->Udp4CfgData.AllowDuplicatePort = TRUE;