How to fix Ubuntu DNS problems

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Nov 15
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If you’re experiencing DNS related problems on Ubuntu, follow the below steps to use Google’s public DNS servers:

  1. Open network interfaces:
    sudo vim /etc/network/interfaces
  2. Add the following after “# dns-* options are implemented by the resolvconf package, if installed“:
  3. Restart the networking service:
    sudo /etc/init.d/networking restart

You should then be able to ping and continue with what you were originally doing. If you experience further problems when using apt-get you will need to clear your cache:

  1. Delete apt cache:
    sudo rm -rf /var/lib/apt/lists/*
  2. Re-download packages:
    sudo apt-get update

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