DynDNS (Dynamic Domain Name System) is a service that allows users to assign a fixed domain name to a device with a dynamic IP address. This is particularly useful for home networks, servers, or remote devices that do not have a static IP from their Internet Service Provider (ISP).
Key Purposes:
- Remote Access – Enables access to home or office networks remotely using a consistent domain name.
- Hosting Services – Supports hosting websites, game servers, or other services from a dynamic IP.
- Simplified Configuration – Automatically updates DNS records when the IP address changes, avoiding manual reconfiguration.
Essentially, DynDNS bridges the gap between dynamic IP addresses and the need for reliable remote access.
While publishing the pkarr.zone with pkdns-cli, the cli replaces the variables {external_ipv4} and {external_ipv6} with your actual external IP address. In combination with publishing your Public Key Domain (PKD)
every 60 minutes, your PKD keeps pointing to the correct IP address.
See cli/sample/pkarr.zone as an example to use your external IPv4 address and this guide on how to publish it.