diff --git a/reactos/drivers/network/ndis/ndis/50stubs.c b/reactos/drivers/network/ndis/ndis/50stubs.c
index d742fffb50f..11db175b47b 100644
--- a/reactos/drivers/network/ndis/ndis/50stubs.c
+++ b/reactos/drivers/network/ndis/ndis/50stubs.c
@@ -446,44 +446,6 @@ NdisIMCancelInitializeDeviceInstance(
 }
 
 
-/*
- * @unimplemented
- */
-VOID
-EXPORT
-NdisIMCopySendCompletePerPacketInfo(
-    IN  PNDIS_PACKET    DstPacket,
-    IN  PNDIS_PACKET    SrcPacket)
-/*
- * FUNCTION:
- * ARGUMENTS:
- * NOTES:
- *    NDIS 5.0
- */
-{
-    UNIMPLEMENTED
-}
-
-
-/*
- * @unimplemented
- */
-VOID
-EXPORT
-NdisIMCopySendPerPacketInfo(
-    IN  PNDIS_PACKET    DstPacket,
-    IN  PNDIS_PACKET    SrcPacket)
-/*
- * FUNCTION:
- * ARGUMENTS:
- * NOTES:
- *    NDIS 5.0
- */
-{
-    UNIMPLEMENTED
-}
-
-
 /*
  * @unimplemented
  */
diff --git a/reactos/drivers/network/ndis/ndis/buffer.c b/reactos/drivers/network/ndis/ndis/buffer.c
index 66463635b34..456410eeb2b 100644
--- a/reactos/drivers/network/ndis/ndis/buffer.c
+++ b/reactos/drivers/network/ndis/ndis/buffer.c
@@ -1320,4 +1320,57 @@ NdisCopyFromPacketToPacketSafe(
     *BytesCopied = Total;
 }
 
+/*
+ * @implemented
+ */
+VOID
+EXPORT
+NdisIMCopySendCompletePerPacketInfo(
+    IN  PNDIS_PACKET    DstPacket,
+    IN  PNDIS_PACKET    SrcPacket)
+/*
+ * FUNCTION:
+ * ARGUMENTS:
+ * NOTES:
+ *    NDIS 5.0
+ */
+{
+    /* FIXME: What is the difference between NdisIMCopySendPerPacketInfo and
+     * NdisIMCopySendCompletePerPacketInfo?
+     */
+
+    NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
+
+    RtlCopyMemory(NDIS_PACKET_EXTENSION_FROM_PACKET(DstPacket),
+                  NDIS_PACKET_EXTENSION_FROM_PACKET(SrcPacket),
+                  sizeof(NDIS_PACKET_EXTENSION));
+}
+
+
+/*
+ * @implemented
+ */
+VOID
+EXPORT
+NdisIMCopySendPerPacketInfo(
+    IN  PNDIS_PACKET    DstPacket,
+    IN  PNDIS_PACKET    SrcPacket)
+/*
+ * FUNCTION:
+ * ARGUMENTS:
+ * NOTES:
+ *    NDIS 5.0
+ */
+{
+    /* FIXME: What is the difference between NdisIMCopySendPerPacketInfo and
+     * NdisIMCopySendCompletePerPacketInfo?
+     */
+
+    NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
+
+    RtlCopyMemory(NDIS_PACKET_EXTENSION_FROM_PACKET(DstPacket),
+                  NDIS_PACKET_EXTENSION_FROM_PACKET(SrcPacket),
+                  sizeof(NDIS_PACKET_EXTENSION));
+}
+
 /* EOF */