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jrg
Asked: 2012-12-28 05:19:23 +0800 CST

How can I disable the DNS that Network Manager uses?

  • 772

Ubuntu uses a DNSMasq instance for Network Manager starting in 12.04 - how can I disable it?

network-manager

3 Answers

  1. Best Answer

    Edit /etc/NetworkManager/NetworkManager.conf with the following command:

    gksu gedit /etc/NetworkManager/NetworkManager.conf

    Enter in your password when prompted.

    Comment out the line dns=dnsmasq, so it looks like this:

    #dns=dnsmasq

    and then restart Network Manager with 

    sudo restart network-manager
# if you get /com/ubuntu/upstart: Connection refused, try:
sudo service network-manager restart

    Ta-da! You're all set!

    • 41

  2. If this still does not work for you, like was my case with Ubuntu 16.10. Then check who is using this port with:

    lsof -i :53

    And if you for example have "systemd-r", then you have to stop the service with:

    sudo service systemd-resolved stop
    • 2

  3. I also had this problem, but I'm on Ubuntu 16.04, so the original solution did not work. However, this page had the solution.

    Add DNSStubListener=no in /etc/systemd/resolved.conf and then restart the systemd-resolved service. Now, the built-in dnsmasq should not start automatically.

    You will also need to make sure that dns=dnsmasq is commented out in /etc/NetworkManager/NetworkManager.conf, like the previous answer specifies.

    • 2