Install ddns3-client by entering the following commands in the terminal:
sudo apt update sudo apt install ddns3-client
Issues dynamic DNS v3 requests
Dynamic DNS fixes your domain name when your IP address varies with permanent connections like cable modems. Your ISP may charge extra for DNS. Free dynamic DNS with a range of domain names is available from sites like dyndns.org, hn.org and ddns.nu. You set up an account and domain name with your browser at the dynamic DNS site then update the IP periodically with an appropriate client program. . This package installs a DNS update client, ddns3, for Dynamic DNS version 3 used by server ddns.nu in Sydney, Australia. After server account creation edit /etc/default/ddns3-client to activate ddns3.