diff --git a/xCAT/postscripts/xcatinstallpost b/xCAT/postscripts/xcatinstallpost
index 7ad5766c0..1c137854b 100755
--- a/xCAT/postscripts/xcatinstallpost
+++ b/xCAT/postscripts/xcatinstallpost
@@ -19,24 +19,38 @@ fi
 SLI=$(awk 'BEGIN{srand(); printf("%d\n",rand()*10)}')
 sleep $SLI
 
+
 MACADDR=`grep MACADDRESS= /xcatpost/mypostscript.post |awk -F = '{print $2}'|sed s/\'//g`
 INSTALLNIC=`ip -o link|grep -i $MACADDR|awk  '{print $2}'|sed s/://`
 
+
 #the nics have not been configured when running the PBS sometimes, need to make sure... 
 RETRY=0
-until ip -4 --oneline addr show dev $INSTALLNIC|grep inet >/dev/null
-do
-    sleep 2
+NETUP=0
+while true; do
+    #scan the nics with the specified mac address
+    #there will be multiple nic names for a mac address when the network bridge exists
+    for nic in $INSTALLNIC ;do
+        #check whether the nic is configured and linkup
+        ip -4 --oneline addr show dev $nic |grep inet >/dev/null && NETUP=1 && break
+    done
+    
+    #nic is configured,terminate scan...
+    [ $NETUP -ne 0 ] && break;    
+
     RETRY=$[ $RETRY + 1 ]
-    if [ $RETRY -eq 90  ];then
-          msgutil_r "$MASTER_IP" "err" `date`" xcatinstallpost: Network not configured, please check..." "/var/log/xcat/xcat.log"
-          exit 1
+
+    if [ $RETRY -eq 90 ];then
+       #timeout, complain and exit
+       msgutil_r "$MASTER_IP" "err" `date`" xcatinstallpost: Network not configured, please check..." "/var/log/xcat/xcat.log"
+       exit 1
     fi
-
+    
+    #sleep sometime before the next scan  
+    sleep 2
 done
 
 
-
 cd /xcatpost; 
 PATH=/xcatpost:$PATH
 export PATH