diff --git a/xCAT-server/share/xcat/scripts/genduiduuid.sh b/xCAT-server/share/xcat/scripts/genduiduuid.sh
new file mode 100644
index 000000000..016046316
--- /dev/null
+++ b/xCAT-server/share/xcat/scripts/genduiduuid.sh
@@ -0,0 +1,19 @@
+if [ ! -r /etc/redhat-release ] || ! grep "release 6" /etc/redhat-release >/dev/null; then
+    exit 0; #only rhel6 supported
+fi
+if [ -r /sys/devices/virtual/dmi/id/product_uuid ]; then 
+    duid='default-duid "\000\004';
+    for i in `sed -e s/-//g -e 's/\(..\)/\1 /g' /sys/devices/virtual/dmi/id/product_uuid`; do
+        num=`printf "%d" 0x$i`
+        octnum=`printf "\\%03o" 0x$i`
+        if [ $num -lt 127 -a $num -gt 31 ]; then
+            octnum=`printf $octnum`
+        fi
+        duid=$duid$octnum
+    done
+    duid=$duid'";'
+    for interface in `ifconfig -a|grep HWaddr|awk '{print $1}'`; do
+        echo $duid > /var/lib/dhclient/dhclient6-$interface.leases
+    done
+    echo $duid  > /var/lib/dhclient/dhclient6.leases
+fi