dyndns and ddclient

1.http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch19_:_Dynamic_DNS#DDNS_Client_Software_-_Linux_DDclient
2.rm /var/cache/ddclient/ddclient.cache
3.kwrite /etc/ddclient.conf
4.ddclient -daemon=0 -query
5.ddclient -daemon=0 -debug -verbose -noquiet
6./etc/init.d/ddclient restart
7.ddclient -refresh -retry