diff --git a/xCAT/postscripts/confignics b/xCAT/postscripts/confignics
index 5a3960c82..b4fde5a17 100755
--- a/xCAT/postscripts/confignics
+++ b/xCAT/postscripts/confignics
@@ -42,8 +42,13 @@ function splitconfig(){
 }
 
 function findnetwork(){
-    str_ip=$1
-    str_network=''
+    local str_ip=$1
+    local str_network=''
+    local flag_v6=0
+    echo "$str_ip" | grep ':' > /dev/null
+    if [ $? -eq 0 ];then
+        flag_v6=1
+    fi
     local num_i=1
     while [ $num_i -le $NETWORKS_LINES ];do
         eval str_temp=\$NETWORKS_LINE$num_i
@@ -51,13 +56,27 @@ function findnetwork(){
         str_mask=`echo $str_temp | awk -F'mask=' '{print $2}' | awk -F'|' '{print $1}' | sed 's:^/::'`
         echo $str_net | grep ':' > /dev/null
         if [ $? -ne 0 ];then
-            str_temp_net1=$(v4calcnet $str_ip $str_mask)
-            str_temp_net2=$(v4calcnet $str_net $str_mask)
-            if [ "$str_temp_net1" = "$str_temp_net2" ];then
-                str_network=`echo $str_temp  | awk -F'netname=' '{print $2}' | awk -F'|' '{print $1}'`
-                echo "$str_network"
-                return
+            if [ $flag_v6 -eq 0 ];then
+                str_temp_net1=$(v4calcnet $str_ip $str_mask)
+                str_temp_net2=$(v4calcnet $str_net $str_mask)
+            else
+                num_i=$((num_i+1))
+                continue
             fi
+        else
+            if [ $flag_v6 -eq 1 ];then
+                str_temp_net1=$(v6calcnet $str_ip $str_mask)
+                str_temp_net2=$(v6calcnet $str_net $str_mask)
+            else
+                num_i=$((num_i+1))
+                continue
+            fi
+        fi
+
+        if [ "$str_temp_net1" = "$str_temp_net2" ];then
+        str_network=`echo $str_temp  | awk -F'netname=' '{print $2}' | awk -F'|' '{print $1}'`
+            echo "$str_network"
+            return
         fi
         num_i=$((num_i+1))
     done
@@ -69,7 +88,6 @@ function checknetwork(){
     old_ifs=$IFS
     IFS=$'|'
     array_ip=($1)
-    array_networkname=($2)
     IFS=$old_ifs
     str_ret=''
 
@@ -78,25 +96,14 @@ function checknetwork(){
     while [ $num_index -lt $num_length ]
     do
         str_ip=${array_ip[$num_index]}
-        str_networkname=${array_networkname[$num_index]}
-        echo "$str_ip" | grep ':' > /dev/null
-        if [ $? -ne 0 ];then
-            if [ -z "$str_networkname" ];then
-                str_networkname=$(findnetwork $str_ip)
-                echo "$str_networkname" | grep -i 'error' > /dev/null
-                if [ $? -eq 0 ];then
-                    echo "$str_networkname"
-                    return
-                fi
-            fi
-            str_ret="${str_ret}${str_networkname},"
-        else
-            if [ -z "$str_networkname" ];then
-                echo "Error: ipv6 address should define networks name, the ip is $str_ip ."
-                return
-            fi
-            str_ret="${str_ret}${str_networkname},"
+        str_networkname=$(findnetwork $str_ip)
+        echo "$str_networkname" | grep -i 'error' > /dev/null
+        if [ $? -eq 0 ];then
+            echo "$str_networkname"
+            return
         fi
+        str_ret="${str_ret}${str_networkname},"
+
         num_index=$((num_index+1))
     done
 
@@ -182,37 +189,12 @@ fi
 bool_exit_flag=0
 #check the required attributes
 if [ -z "$NICIPS" ];then
-    if [ -n "$NICTYPES" ];then
-        logger -t xcat -p local4.info "confignics: nicips attribute is not defined. so the nictypes attribute can not be defined."
-        echo "confignics on $NODE: nicips attribute is not defined. so the nictypes attribute can not be defined."
-        bool_exit_flag=1
-    fi
-
-    if [ -n "$NICNETWORKS" ];then
-        logger -t xcat -p local4.info "confignics: nicips attribute is not defined. so the nicnetworks attribute can not be defined."
-        echo "confignics on $NODE: nicips attribute is not defined. so the nicnetworks attribute can not be defined."
-        bool_exit_flag=1
-    fi
-else
-    if [ -z "$NICTYPES" ];then
-        logger -t xcat -p local4.info "confignics: nictypes attribute is not defined."
-        echo "confignics on $NODE: nictypes attribute is not defined."
-        bool_exit_flag=1
-    fi
-
-    if [ -z "$NICNETWORKS" ];then
-        logger -t xcat -p local4.info "confignics: nicnetworks attribute is not defined."
-        echo "confignics on $NODE: nicnetworks attribute is not defined."
-        bool_exit_flag=1
-    fi
-fi
-
-if [ $bool_exit_flag -eq 1 ];then
+    logger -t xcat -p local4.info "confignics: nicips attribute is not defined. "
+    echo "confignics on $NODE: nicips attribute is not defined. "
     exit 0
 fi
 
 splitconfig $NICIPS
-splitconfig $NICNETWORKS
 splitconfig $NICCUSTOMSCRIPTS
 
 if [ $boot_myscript -eq 1 ];then
@@ -289,10 +271,10 @@ do
     array_temp=($str_value)
     IFS=$old_ifs
 
-    if [ -n "${array_temp[2]}" ];then
-        logger -t xcat -p local4.info "confignics: processing custom scripts: ${array_temp[2]} for interface $key" 
-        echo "confignics on $NODE: processing custom scripts: ${array_temp[2]} for interface $key"
-        ${array_temp[2]}
+    if [ -n "${array_temp[1]}" ];then
+        logger -t xcat -p local4.info "confignics: processing custom scripts: ${array_temp[1]} for interface $key" 
+        echo "confignics on $NODE: processing custom scripts: ${array_temp[1]} for interface $key"
+        ${array_temp[1]}
     else
         if [ `echo $key | grep -E '(eth|en)[0-9]+'` ];then
             str_nic_type="ethernet"
@@ -304,7 +286,7 @@ do
             continue
         fi
 
-        str_network=$(checknetwork ${array_temp[0]} ${array_temp[1]})
+        str_network=$(checknetwork ${array_temp[0]})
         echo "$str_network" | grep -i 'error' > /dev/null
         if [ $? -eq 0 ];then
             logger -t xcat -p local4.info "$str_network"
@@ -315,7 +297,7 @@ do
         if [ "$str_nic_type" = "ethernet" ];then
              logger -t xcat -p local4.info "confignics: call 'configeth $key ${array_temp[0]} $str_network'"
              echo "confignics on $NODE: call 'configeth $key ${array_temp[0]} $str_network'"
-             #configeth $key ${array_temp[0]} $str_network
+             configeth $key ${array_temp[0]} $str_network
         elif [ "$str_nic_type" = "infiniband" ];then
             if [ $str_ib_nics ];then
                 str_ib_nics=$str_ib_nics","$key
diff --git a/xCAT/postscripts/xcatlib.sh b/xCAT/postscripts/xcatlib.sh
index d3d253760..ee532258d 100644
--- a/xCAT/postscripts/xcatlib.sh
+++ b/xCAT/postscripts/xcatlib.sh
@@ -22,7 +22,7 @@ function debianpreconf(){
         mkdir -p "/etc/network/interfaces.d"
     fi
     #search xcat flag
-    `grep "#XCAT_CONFIG" /etc/network/interfaces`
+    grep '#XCAT_CONFIG' /etc/network/interfaces
     if [ $? -eq 0 ];then
         return
     fi
@@ -185,3 +185,84 @@ function v4calcnet(){
     str_net=`echo $str_net | sed 's/.$//'`
     echo "$str_net"
 }
+
+function v6expand(){
+    local str_v6address=$1
+    str_v6address=${str_v6address%%/*}
+    echo "$str_v6address" | grep '::' > /dev/null
+    if [ $? -ne 0 ];then
+        echo "$str_v6address"
+        return
+    fi
+
+    local num_colon=`echo "$str_v6address" | grep -o ':' | wc -l`
+    local num_omit=$((7-num_colon))
+    local str_temp=0
+    local num_index=1
+    while [ $num_index -le $num_omit  ];do
+        str_temp=$str_temp":0"
+        num_index=$((num_index+1))
+    done
+    
+    str_v6address=`echo $str_v6address | sed "s/::/:$str_temp:/" | sed 's/^:/0:/' | sed 's/:$/:0/'`
+    echo "$str_v6address"
+}
+
+function v6prefix2mask(){
+    local num_v6prefix=$1
+    num_v6prefix=`echo $num_v6prefix | sed 's:/::g'`
+    if [ $num_v6prefix -gt 128 ];then
+        $num_v6prefix=128
+    fi
+
+    if [ $num_v6prefix -le 0 ];then
+        $num_v6prefix=1
+    fi
+
+    local num_i=1
+    local str_mask=''
+    while [ $num_i -le 8 ];do
+        if [ $num_v6prefix -ge 16 ];then
+            str_mask=$str_mask"ffff:"
+            num_v6prefix=$((num_v6prefix-16))
+        elif [ $num_v6prefix -eq 0 ];then
+            str_mask=$str_mask"0:"
+        else
+            local str_temp=$(((65535>>$num_v6prefix)^65535))
+            str_temp=`echo "$str_temp"|awk '{printf("%x\n",$0)}'`
+            str_mask=$str_mask"$str_temp:"
+            num_v6prefix=0
+        fi
+        num_i=$((num_i+1))
+    done
+
+    str_mask=`echo $str_mask | sed 's/.$//'`
+    echo "$str_mask"
+}
+
+function v6calcnet(){
+    local str_v6ip=$(v6expand $1)
+    local str_v6mask=$2
+    local str_v6net=''
+
+    echo "$str_v6maks " | grep ':' > /dev/null
+    if [ $? -ne 0 ];then
+        str_v6mask=$(v6prefix2mask $str_v6mask)
+    fi
+
+    local str_old_ifs=$IFS
+    IFS=$':'
+    local array_ip=($str_v6ip)
+    local array_mask=($str_v6mask)
+    IFS=$str_old_ifs
+
+    for num_i in {0..7}
+    do
+        str_temp=$(( 0x${array_ip[$num_i]} & 0x${array_mask[$num_i]} ))
+        str_temp=`echo $str_temp | awk '{printf("%x\n",$0)}'`
+        str_v6net=$str_v6net$str_temp":"
+    done
+
+    str_v6net=`echo $str_v6net | sed 's/.$//'`
+    echo "$str_v6net"
+}