A tool to update dynamic IP addresses typically obtained using DHCP
with dynamic DNS services such as changeip.com, duckdns.org or no-ip.com.
It makes it possible to access a machine with a fixed name like
myhost.duckdns.org even if the ip address changes. ddupdate caches the
address, and only attempts the update if the address actually is changed.
The tool has a plugin structure with plugins for obtaining the actual
address (typically hardware-dependent) and to update it (service depen‐
dent). For supported services, it's a linux-centric, user-friendly and
flexible alternative to the ubiquotous ddclient.
ddupdate is distributed with systemd support to run at regular intervals,
and with NetworkManager templates to run when interfaces goes up or down.
