diff --git a/reactos/drivers/network/ndis/ndis/protocol.c b/reactos/drivers/network/ndis/ndis/protocol.c
index 4703e5ecf03..dd56c40bf95 100644
--- a/reactos/drivers/network/ndis/ndis/protocol.c
+++ b/reactos/drivers/network/ndis/ndis/protocol.c
@@ -279,7 +279,8 @@ ProIndicatePacket(
   NDIS_DbgPrint(MAX_TRACE, ("acquiring miniport block lock\n"));
   KeAcquireSpinLock(&Adapter->NdisMiniportBlock.Lock, &OldIrql);
     {
-      BufferedLength = CopyPacketToBuffer(LookaheadBuffer, Packet, 0, Adapter->NdisMiniportBlock.CurrentLookahead);
+      BufferedLength = CopyPacketToBuffer(LookaheadBuffer, Packet, 0, Adapter->NdisMiniportBlock.CurrentLookahead +
+                                                                      Adapter->MediumHeaderSize);
       Adapter->NdisMiniportBlock.IndicatedPacket[KeGetCurrentProcessorNumber()] = Packet;
     }
   KeReleaseSpinLock(&Adapter->NdisMiniportBlock.Lock, OldIrql);
@@ -298,6 +299,12 @@ ProIndicatePacket(
 
   ExFreePool(LookaheadBuffer);
 
+  KeAcquireSpinLock(&Adapter->NdisMiniportBlock.Lock, &OldIrql);
+    {
+      Adapter->NdisMiniportBlock.IndicatedPacket[KeGetCurrentProcessorNumber()] = NULL;
+    }
+  KeReleaseSpinLock(&Adapter->NdisMiniportBlock.Lock, OldIrql);
+
   return NDIS_STATUS_SUCCESS;
 }
 
@@ -649,12 +656,12 @@ ProTransferData(
     /* FIXME: Interrupts must be disabled for adapter */
     /* XXX sd - why is that true? */
 
-    if (Packet == Adapter->NdisMiniportBlock.IndicatedPacket[KeGetCurrentProcessorNumber()]) {
+    if (Adapter->NdisMiniportBlock.IndicatedPacket[KeGetCurrentProcessorNumber()]) {
 	NDIS_DbgPrint(MAX_TRACE, ("LoopPacket\n"));
         /* NDIS is responsible for looping this packet */
         NdisCopyFromPacketToPacket(Packet,
-                                   ByteOffset,
-                                   BytesToTransfer,
+                                   ByteOffset + Adapter->MediumHeaderSize,
+                                   BytesToTransfer + Adapter->MediumHeaderSize,
                                    Adapter->NdisMiniportBlock.IndicatedPacket[KeGetCurrentProcessorNumber()],
                                    0,
                                    BytesTransferred);