diff --git a/gestion/gest_crans.py b/gestion/gest_crans.py
index f69be922..80713788 100644
--- a/gestion/gest_crans.py
+++ b/gestion/gest_crans.py
@@ -2210,6 +2210,15 @@ def menu_principal():
             try:
                 if choix == 'Fixe':
                     becane = MachineFixe(proprio)
+                    #Saisie prédictive de la mac
+                    try:
+                        prise = proprio.chbre().lower()[0] + becane.prise()
+                        f = open('/usr/scripts/var/last_macs/' + prise, 'r')
+                        becane.mac(f.read())
+                        f.close()
+                    except:
+                        pass
+
                 elif choix == 'Wifi':
                     becane = MachineWifi(proprio)
             except ValueError, c:
diff --git a/radius_auth.py b/radius_auth.py
index fcab0fb8..7554f4ea 100644
--- a/radius_auth.py
+++ b/radius_auth.py
@@ -104,4 +104,12 @@ if __name__ == '__main__' :
                          "Tunnel-Medium-Type = IEEE-802",
                          "Tunnel-Private-Group-Id = \"%d\"" % vlans[vlan]])
 
+    # On tente de logguer la dernière mac sur une prise donnée
+    try:
+        f = open('/usr/scripts/var/last_macs/' + prise,'w')
+        f.write(mac)
+        f.close()
+    except:
+        pass
+
     sys.exit(r)