diff --git a/xCAT-server/share/xcat/install/scripts/post.rh.common b/xCAT-server/share/xcat/install/scripts/post.rh.common
index 79bc733a7..9ad02fd7a 100644
--- a/xCAT-server/share/xcat/install/scripts/post.rh.common
+++ b/xCAT-server/share/xcat/install/scripts/post.rh.common
@@ -13,7 +13,8 @@ if [ -z "$PRINIC" ]
 then
     for karg in $(cat /proc/cmdline |sed -e 's/-/:/g' -e 's/ /\n/g'); do
         if  [ "${karg%%=*}" = "BOOTIF" ]; then
-            export PRINIC=`ifconfig -a|grep -i "hwaddr ${karg#*=01:}"|awk '{print $1}'`
+            #export PRINIC=`ifconfig -a|grep -i "hwaddr ${karg#*=01:}"|awk '{print $1}'`
+            export PRINIC=`ip -o link|grep -i "${karg#*=}"|awk  '{print $2}'|sed s/://`
         fi
     done
     if [ -z "$PRINIC" ]; then
@@ -24,13 +25,16 @@ if [ -z "$PRINIC" ]
 then
     export PRINIC=eth0
 elif [[ `echo "$PRINIC" | grep -sqE ^[A-Fa-f0-9]+:[A-Fa-f0-9]+:[A-Fa-f0-9]+:[A-Fa-f0-9]+:[A-Fa-f0-9]+:[A-Fa-f0-9]+$ ;echo $?` == "0" ]]; then
-    export PRINIC=`ifconfig -a | grep -i "HWaddr $PRINIC" | awk '{print $1}'`
+    #export PRINIC=`ifconfig -a | grep -i "HWaddr $PRINIC" | awk '{print $1}'`
+    export PRINIC=`ip -o link|grep -i "$PRINIC"|awk  '{print $2}'|sed s/://`
 fi
-IP=$(ifconfig $PRINIC | grep inet | awk '{print $2}' | awk -F: '{print $2}')
+#IP=$(ifconfig $PRINIC | grep inet | awk '{print $2}' | awk -F: '{print $2}')
+IP=$(ip addr show dev $PRINIC | grep inet | grep -v inet6  | awk  '{print $2}' | head -n 1 | awk -F '/' '{print $1}')
 if [ -z $IP ]
 then
 	dhclient eth0
-	IP=$(ifconfig $PRINIC | grep inet | awk '{print $2}' | awk -F: '{print $2}')
+	#IP=$(ifconfig $PRINIC | grep inet | awk '{print $2}' | awk -F: '{print $2}')
+        IP=$(ip addr show dev $PRINIC | grep inet | grep -v inet6  | awk  '{print $2}' | head -n 1 | awk -F '/' '{print $1}')
 fi
 
 export HOSTNAME=$(host $IP 2>/dev/null | awk '{print $5}' | awk -F. '{print $1}')