diff --git a/src/system/on-dhcp-event.sh b/src/system/on-dhcp-event.sh
index 52fadd428..47c276270 100755
--- a/src/system/on-dhcp-event.sh
+++ b/src/system/on-dhcp-event.sh
@@ -1,90 +1,98 @@
 #!/bin/bash
-
-# This script came from ubnt.com forum user "bradd" in the following post
-# http://community.ubnt.com/t5/EdgeMAX/Automatic-DNS-resolution-of-DHCP-client-names/td-p/651311
-# It has been modified by Ubiquiti to update the /etc/host file
-# instead of adding to the CLI.
-# Thanks to forum user "itsmarcos" for bug fix & improvements
-# Thanks to forum user "ruudboon" for multiple domain fix
-# Thanks to forum user "chibby85" for expire patch and static-mapping
+#
+# Copyright (C) 2024 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
 
 if [ $# -lt 1 ]; then
   echo Invalid args
   logger -s -t on-dhcp-event "Invalid args \"$@\""
   exit 1
 fi
 
 action=$1
 hostsd_client="/usr/bin/vyos-hostsd-client"
 
 get_subnet_domain_name () {
   python3 <<EOF
 from vyos.kea import kea_get_active_config
 from vyos.utils.dict import dict_search_args
 
 config = kea_get_active_config('4')
 shared_networks = dict_search_args(config, 'arguments', f'Dhcp4', 'shared-networks')
 
 found = False
 
 if shared_networks:
   for network in shared_networks:
     for subnet in network[f'subnet4']:
       if subnet['id'] == $1:
         for option in subnet['option-data']:
           if option['name'] == 'domain-name':
             print(option['data'])
             found = True
 
         if not found:
           for option in network['option-data']:
             if option['name'] == 'domain-name':
               print(option['data'])
 EOF
 }
 
 case "$action" in
   lease4_renew|lease4_recover)
     exit 0
     ;;
 
   lease4_release|lease4_expire|lease4_decline) # delete mapping for released/declined address
     client_ip=$LEASE4_ADDRESS
     $hostsd_client --delete-hosts --tag "dhcp-server-$client_ip" --apply
     exit 0
     ;;
 
   leases4_committed) # process committed leases (added/renewed/recovered)
     for ((i = 0; i < $LEASES4_SIZE; i++)); do
       client_ip_var="LEASES4_AT${i}_ADDRESS"
       client_mac_var="LEASES4_AT${i}_HWADDR"
       client_name_var="LEASES4_AT${i}_HOSTNAME"
       client_subnet_id_var="LEASES4_AT${i}_SUBNET_ID"
 
       client_ip=${!client_ip_var}
       client_mac=${!client_mac_var}
       client_name=${!client_name_var%.}
       client_subnet_id=${!client_subnet_id_var}
 
       if [ -z "$client_name" ]; then
           logger -s -t on-dhcp-event "Client name was empty, using MAC \"$client_mac\" instead"
           client_name=$(echo "host-$client_mac" | tr : -)
       fi
 
       client_domain=$(get_subnet_domain_name $client_subnet_id)
 
       if [[ -n "$client_domain" ]] && ! [[ $client_name =~ .*$client_domain$ ]]; then
         client_name="$client_name.$client_domain"
       fi
 
       $hostsd_client --add-hosts "$client_name,$client_ip" --tag "dhcp-server-$client_ip" --apply
     done
 
     exit 0
     ;;
 
   *)
     logger -s -t on-dhcp-event "Invalid command \"$1\""
     exit 1
     ;;
 esac