Setup repository and install

Create repository:

$ sudo echo "deb http://elkano.org/repos/apt/debian stable main" > /etc/apt/sources.list.d/dyndns.list

Get and install repository key:

$ sudo wget  -O - http://elkano.org/elkano.gpg | apt-key add -

Update and install dyndns-client:

$ sudo apt-get update
$ sudo apt-get dyndns-client

Setting up dyndns client

Edit the configuration file in /etc/dyndns.conf:

# API URL
api_url = https://elkano.org/api/v1/

# Email and password of your account
user = user@domain.com
pass = yourpass

# Uuid of the domain you want to monitor
uuid = 5745786c38721a55853cf47e6c37492f

Start service with upstart (Ubuntu/Mint/Xbian):

$ sudo service dyndns-client start
dyndns-client start/running, process 24504

or as systemv style (Debian):

$ sudo /etc/init.d/dyndns-client start
dyndns-client start/running, process 24504

In your syslog should appear something like this every minute:

Aug 25 12:27:22 localhost /dyndns_client.py[24504]: Actual public ip is: --89.195.16.153--
Aug 25 12:27:22 localhost /dyndns_client.py[24504]: Public IP 89.195.16.153 has not changed