diff --git a/gestion/ldap_crans.py b/gestion/ldap_crans.py
index 452c3e11..3c380860 100755
--- a/gestion/ldap_crans.py
+++ b/gestion/ldap_crans.py
@@ -10,6 +10,7 @@ Licence : GPLv2
 """
 
 from socket import gethostname
+import socket
 import smtplib, re, os, random, string, time, sys, pwd
 import errno
 import ldap, ldap.modlist, ldap_passwd
@@ -3200,9 +3201,12 @@ Contactez nounou si la MAC est bien celle d'une carte.""", 3)
         if reconf_ip:
             from gen_confs.dhcpd_new import dydhcp
             for server in config.dhcp_servers:
-                dhcp=dydhcp(server)
-                dhcp.del_host(self._init_data.get('ipHostNumber',[self.ip()])[0],self._init_data.get('macAddress',[self.mac()])[0])
-                dhcp.add_host(self._data.get('ipHostNumber',[self.ip()])[0],self._data.get('macAddress',[self.mac()])[0],self.nom())
+                try:
+                    dhcp=dydhcp(server)
+                    dhcp.del_host(self._init_data.get('ipHostNumber',[self.ip()])[0],self._init_data.get('macAddress',[self.mac()])[0])
+                    dhcp.add_host(self._data.get('ipHostNumber',[self.ip()])[0],self._data.get('macAddress',[self.mac()])[0],self.nom())
+                except socket.error:
+                    sys.stderr.write((u'Dhcp generate failed for %s\n' % server).encode('utf-8'))
         # Enregistrement
         self._save()
 
@@ -3272,8 +3276,11 @@ Contactez nounou si la MAC est bien celle d'une carte.""", 3)
         # On supprime la machine du dhcp
         from gen_confs.dhcpd_new import dydhcp
         for server in config.dhcp_servers:
-            dhcp=dydhcp(server)
-            dhcp.del_host(self.ip(),self.mac())
+            try:
+                dhcp=dydhcp(server)
+                dhcp.del_host(self.ip(),self.mac())
+            except socket.error:
+                sys.stderr.write((u'Dhcp generate failed for %s\n' % server).encode('utf-8'))
 
         # Services à redémarrer
         self.services_to_restart('dhcp')