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DDNS/DynDNS/Dynamic DNS update systemd service
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| [Unit] | |
| Description=DynDNS Updater services | |
| Wants=network-online.target | |
| After=network-online.target | |
| [Service] | |
| Type=simple | |
| EnvironmentFile=/etc/dyndns.conf | |
| ExecStart=/usr/bin/wget -qO /tmp/dyndns.out '$DDNSURL' | |
| [Install] | |
| WantedBy=multi-user.target |
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| DDNSURL='https://my.dyndnshost.com/ddns.php?user=myUser&password=mySecretPassword&domain=example.com' |
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K.I.S..S. FTW! It's not sophisticated but it will get the job done.
My ISP only change my DHCP assigned outer IP when the outer NIC changes MAC address, so it doesn't matter that the service only starts on network-online.target and not regularly as some may want.