Heaven knows how hard I tried to change my DNS server to openDNS. I've tried all the methods I could found on the Internet to no avail. After all I did, the DNS always comes back to the provider's default.
That was what happened with Ubuntu 8.10.
But now with Ubuntu 9.04 Beta, modifying DNS server is easy as it should have been. See the Primary DNS and Secondary DNS in this picture already pointing to openDNS.

How to change your default DNS server to openDNS in Ubuntu?

• Go to System -> Preferences -> Network Connections
• Edit your working Internet Connection to the Internet, in my case it's on Mobile Broadband tab,
  
• Edit it, click the IPv4 Settings tab
  
• Choose Methods : Automatic (PPP) adresses only
• On the DNS servers, type :
  208.67.222.222, 208.67.220.220
  
• Click Apply, and you're done. Next time you connect to Internet you'll be using openDNS.

Easy! I think I'm going to like Ubuntu 9.04.

ps :
I said I was waiting for the stable 9.04, therefore I installed Ubuntu 9.04 Beta on external hard disk.



keyword : ubuntu | opendns | 8.10 | 9.04