diff --git a/xCAT/postscripts/configeth b/xCAT/postscripts/configeth
index b0b553cf1..38d8a04f1 100755
--- a/xCAT/postscripts/configeth
+++ b/xCAT/postscripts/configeth
@@ -215,7 +215,7 @@ function configipv4(){
         do
             name="${array_extra_param_names[$i]}"
             value="${array_extra_param_values[$i]}"
-            if [[ "$OSVER" =~ (rhels9|alma9|rocky9) ]]; then
+            if [[ "$OSVER" =~ ^(rhels9|alma9|rocky9) ]]; then
                 nmcli con modify $con_name $name $value
             else
                 grep -i "${name}" $str_conf_file
@@ -824,7 +824,7 @@ elif [ "$1" = "-s" ];then
         do
             name="${array_extra_param_names[$i]}"
             value="${array_extra_param_values[$i]}"
-            if [[ "$OSVER" =~ (rhels9|alma9|rocky9) ]]; then
+            if [[ "$OSVER" =~ ^(rhels9|alma9|rocky9) ]]; then
                 nmcli con modify $con_name $name $value
             else
                 echo "$i: name=$name value=$value"
diff --git a/xCAT/postscripts/configib b/xCAT/postscripts/configib
index 1c9f9b4b9..a2f023103 100755
--- a/xCAT/postscripts/configib
+++ b/xCAT/postscripts/configib
@@ -439,7 +439,7 @@ IPADDR=$nicip" > $dir/ifcfg-$nic
                        name="${array_extra_param_names[$i]}"
                        value="${array_extra_param_values[$i]}"
                        echo "  $i: name=$name value=$value"
-                       if [[ "$OSVER" =~ (rhels9|alma9|rocky9) ]]; then
+                       if [[ "$OSVER" =~ ^(rhels9|alma9|rocky9) ]]; then
                            nmcli con modify $con_name $name $value
                        else
                            grep -i "${name}" $dir/ifcfg-$nic
@@ -475,7 +475,7 @@ IPADDR_$ipindex=$nicip" >> $dir/ifcfg-$nic
                        name="${array_extra_param_names[$i]}"
                        value="${array_extra_param_values[$i]}"
                        echo "  $i: name=$name value=$value"
-                       if [[ "$OSVER" =~ (rhels9|alma9|rocky9) ]]; then
+                       if [[ "$OSVER" =~ ^(rhels9|alma9|rocky9) ]]; then
                            nmcli con modify $con_name $name $value
                        else
                            grep -i "${name}" $dir/ifcfg-$nic
@@ -536,7 +536,7 @@ IPADDR=$nicip" > $dir/ifcfg-$nic
                         name="${array_extra_param_names[$i]}"
                         value="${array_extra_param_values[$i]}"
                         echo "  $i: name=$name value=$value"
-                        if [[ "$OSVER" =~ (rhels9|alma9|rocky9) ]]; then
+                        if [[ "$OSVER" =~ ^(rhels9|alma9|rocky9) ]]; then
                             nmcli con modify $con_name $name $value
                         else
                             grep -i "${name}" $dir/ifcfg-$nic
@@ -605,7 +605,7 @@ IPADDR$ipindex=$nicip"
                             name="${array_extra_param_names[$i]}"
                             value="${array_extra_param_values[$i]}"
                             echo "  $i: name=$name value=$value"
-                            if [[ "$OSVER" =~ (rhels9|alma9|rocky9) ]]; then
+                            if [[ "$OSVER" =~ ^(rhels9|alma9|rocky9) ]]; then
                                 nmcli con modify $con_name $name $value
                             else
                                 grep -i "${name}" $cfgfile
@@ -788,7 +788,7 @@ then
                 done
             else 
                 if [ $nmcli_used -eq 1 ]; then
-                    if ! [[ "$OSVER" =~ (rhels9|alma9|rocky9) ]]; then
+                    if ! [[ "$OSVER" =~ ^(rhels9|alma9|rocky9) ]]; then
                         nmcli con reload $dir/ifcfg-$nic
                     fi
                     nmcli con up $nic 2>&1
diff --git a/xCAT/postscripts/nicutils.sh b/xCAT/postscripts/nicutils.sh
index 55a91cdc3..bfabbc287 100755
--- a/xCAT/postscripts/nicutils.sh
+++ b/xCAT/postscripts/nicutils.sh
@@ -1809,7 +1809,7 @@ function add_extra_params_nmcli {
     con_name=$2
     rc=0
 
-    if ! [[ $OSVER =~ (rhels9|alma9|rocky9) ]]; then
+    if ! [[ "$OSVER" =~ ^(rhels9|alma9|rocky9) ]]; then
         str_conf_file="/etc/sysconfig/network-scripts/ifcfg-${con_name}"
         str_conf_file_1="/etc/sysconfig/network-scripts/ifcfg-${con_name}-1"
         if [ -f $str_conf_file_1 ]; then
@@ -1830,7 +1830,7 @@ function add_extra_params_nmcli {
 
         if [ -n "$name" -a -n "$value" ]; then
             # For RHEL 9, use nmcli directly, otherwise use ifcfg scheme.
-            if [[ "$OSVER" =~ (rhels9|alma9|rocky9) ]]; then
+            if [[ "$OSVER" =~ ^(rhels9|alma9|rocky9) ]]; then
                 nmcli con modify "$con_name" "$name" "$value"
                 rc+=$?
             else
@@ -1849,7 +1849,7 @@ function add_extra_params_nmcli {
         i=$((i+1))
     done
 
-    if [[ $OSVER != (rhels9|alma9|rocky9) ]]; then
+    if [[ ! "$OSVER" =~ ^(rhels9|alma9|rocky9) ]]; then
         $nmcli con reload $str_conf_file
     fi
     return $rc