diff --git a/Pymodbus/decoder2.1.py b/Pymodbus/decoder2.1.py
new file mode 100644
index 0000000..82e5313
--- /dev/null
+++ b/Pymodbus/decoder2.1.py
@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#https://scapy.readthedocs.io/en/latest/api/scapy.packet.html#scapy.packet.Packet
+#https://scapy.readthedocs.io/en/latest/api/scapy.contrib.modbus.html
+
+import scapy.all as scapy
+import scapy.contrib.modbus as mb
+
+def decode(pkt):
+    if "ModbusADU" in pkt:
+        miniL=[]
+        cc = pkt["ModbusADU"]
+        print(cc.payload.name)
+        for i in cc.payload.fields:
+            miniL.append(cc.payload.getfieldval(i))
+            print(i,cc.payload.getfieldval(i))
+        bigL.append(miniL)
+    print("fin de decode")
+bigL = []
+scapy.sniff(iface="lo", prn=decode)