If your server returns unknow host errors when you try to ping some website, or wget returns unable to resolve host address, it’s most probably that you don’t have a valid DNS settings in /etc/resolv.conf
wget: unable to resolve host address downloads.sourceforge.net ping: unknown host downloads.sourceforge.net
If you’r host didn’t provided their nameservers that you can use – you can use one provided by OpenDNS.net.
All you need to do is edit file /etc/resolv.comf and add their nemeservers into the file:
nameserver 208.67.220.220 nameserver 208.67.222.222
Save the changes and you’re ready to go!
(No need to restart anything)
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