diff --git a/xCAT/postscripts/configeth b/xCAT/postscripts/configeth
index 590a78598..12883aefe 100755
--- a/xCAT/postscripts/configeth
+++ b/xCAT/postscripts/configeth
@@ -524,6 +524,22 @@ elif [ "$1" = "-s" ];then
            str_inst_ip=`grep IPADDR $str_lease_file | tail -n 1 | awk -F'=' '{print $2}' | sed "s/'//g"`
            str_inst_mask=`grep NETMASK $str_lease_file | tail -n 1 | awk -F'=' '{print $2}' | sed "s/'//g"`
            str_inst_gateway=`grep GATEWAYS $str_lease_file | tail -n 1 | awk -F'=' '{print $2}' | sed "s/'//g"`
+        else
+            if [ -n "$MACADDRESS" ];then
+                str_inst_mac=$MACADDRESS
+                inst_nic=`ip -o link |grep -i ${str_inst_mac} |awk '{print $2}'|sed 's/://g'`
+                if [ ! -z "${inst_nic}" ];then
+                    str_inst_ip=`ip -4 -o addr|grep -i ${inst_nic} |awk '{print $4}'|awk -F/ '{print $1}'`
+                    if [ ! -z "str_inst_ip" ];then
+                        inst_ip_pre=`ip ro ls|grep -i ${str_inst_ip}|awk '{print $1}'|awk -F/ '{print $1}'`
+                        if [ ! -z "inst_ip_pre" ];then
+                            str_inst_mask=`route |grep ${inst_ip_pre}|awk '{print $3}'|head -1`
+                        fi
+                    fi
+                fi
+                str_inst_gateway=`ip ro ls|grep default|awk '{print $3}'|head -1`
+                echo "str_inst_gateway is $str_inst_gateway"
+            fi
        fi
     else
         str_lease_file=`ls /var/lib/dhclient/*$str_inst_nic* | grep leases`