diff --git a/Python/etc/network/interfaces b/Python/etc/network/interfaces
index 2eb4630..9bbacba 100644
--- a/Python/etc/network/interfaces
+++ b/Python/etc/network/interfaces
@@ -39,4 +39,10 @@ iface %(interface)s inet static
         print "   ", line
     print
 
+# Définitions communes
+print """auto lo
+iface lo inet loopback
+"""
+
+
 exec metadata.probes["interfaces.local"]