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diff --git a/master/opt/script/check_network.sh b/master/opt/script/check_network.sh
new file mode 100755
index 0000000..5c17bf2
--- /dev/null
+++ b/master/opt/script/check_network.sh
@@ -0,0 +1,78 @@
+#!/bin/bash
+#
+# ============================================================================
+#
+# Copyright (C) THALES. All rights reserved
+# Author: Alexandre Cazalis
+# 
+# Gestion attente lames esclaves au boot (ping,ssh)
+#
+# 2013-11-20 : V1.2 LMa 
+#   - Ajout de la personalisation de la commande a executer
+#     par defaut (uptime). Ajout attente montage nfs avant demarrage
+# 2014-05-28 : V1.3 LMa
+#   - Ajout d'un mode foreground pour ne tenter qu'une fois chaque commande
+#   - Ajout d'une commande pour exclude la lame maitre
+#
+# 2014-10-28 : Change owner
+# ============================================================================
+
+# TODO
+# *
+
+CMD="uptime"
+MODE="iter"
+PROGNAME=$(basename $0)
+VER=1.3
+EXCLUDE="___"
+
+function usage () {
+    echo "usage: $PROGNAME [-c command] [-h] [-i] [-o] [-t seconds] [-v] [-w] [-x] host1 host2..."
+    echo "   -c: set command (default '$CMD')"
+    echo "   -h: help message"
+    echo "   -i: infinity loop mode [default]"
+    echo "   -o: only try ones"
+    echo "   -t: timeout"
+    echo "   -v: version message"
+    echo "   -w: wait mode"
+    echo "   -x: avoid master blade"
+    exit $@
+}
+
+while [ $# -gt 0 ]; do
+    case "$1" in
+    -c) shift; CMD=$1;;
+    -h) usage 0;;
+    -i) MODE="iter";;
+    -o) MODE="ones";;
+    -t) shift; [[ "$1" =~ [^0-9] ]] && { echo "incorrect timeout ($1)"; exit 1;}; TIMEOUT=$1;;
+    -v) echo "$PROGNAME: version $VER"; exit;;
+    -w) MODE="wait";;
+    -x) EXCLUDE="trc00";;
+    *) list+=" "$1;;
+    esac
+    shift
+done
+
+# list
+[ "$list" ] || list=$(awk '{sub(/#.*/, "")} /trc[0-9][0-9]/ && ! /-rf/ {print $2}' /etc/hosts)
+list=$(echo $list" "|sed s/$EXCLUDE//)
+
+# timeout
+if [ "$TIMEOUT" ]; then
+    trap "echo 'timeout expired (${TIMEOUT}s)'; exit 0;" SIGVTALRM
+    ( sleep $TIMEOUT; kill -SIGVTALRM $$ 2>/dev/null; [ $? -eq 0 ] && rc=1 || rc=0; exit $rc) &
+fi
+trap "exit 0;" SIGINT
+
+# main loop
+while true; do
+    for host in $list; do
+	stat=0
+	echo -n ${host}:" "
+	ping -c 1 $host >&/dev/null && { ssh -t -o ConnectTimeout=1 root@$host "$CMD" 2>/dev/null && stat=1 || echo "soon..."; } || echo
+	[ "$MODE" = "wait" -a $stat -eq 1 ] && list=${list/$host }
+    done
+    [ "$MODE" = "ones" ] && break;
+    [[ "$list" =~ [a-zA-Z0-9_-] ]] && sleep 1 || break;
+done