ubuntu ddclient ddns free domain service with freedns.afraid.org

i want my ubuntu server free domin.

there are free domain service providers , but dyndns is not free now.( 2014/09/10)

freedns.afraid.org is free at this mounent.

1. join http://freedns.afraid.org

2. add subdomains.
   mysubdomain.mooo.com

3.install ddclient

 sudo apt-get install ddclient

4.edit  /usr/sbin/ddclient
 sha1 to sha

5.edit  /etc/ddclient.conf

# Configuration file for ddclient generated by debconf
#
# /etc/ddclient.conf
syslog=yes
daemon=5m
timeout=10
ssl=yes
protocol=freedns
use=if, if=eth0
server=freedns.afraid.org
login=loginid
password='loginpw'
mysubdomain01.mooo.com
mysubdomain02.mooo.com

6.restart ddclient
sudo service ddclient restart

7. see log
sudo tail -f /var/log/syslog


ref
- http://askubuntu.com/questions/211173/how-can-i-get-ddclient-to-work-with-freedns