Configure Static IP Address and Set DNS in Ubuntu 15.10 Desktop and Server

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Marin Todorov

I am a bachelor in computer science and a Linux Foundation Certified System Administrator. Currently working as a Senior Technical support in the hosting industry. In my free time I like testing new software and inline skating.

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13 Responses

  1. Jaidev Shah says:

    Wonderful post. Very simple and to the point. Thank you!!!! Keep it up!!!

  2. Vincent Regouby says:

    Hi, why when we use the desktop method, the interfaces file does not get updated ? Where does the desktop tool write the information ?

    • Marin Todorov says:

      That’s actually a very interesting question and I did not think about it before. I just configured a static IP on one of my Ubuntu boxes and used grep from /etc/ folder recursively to search for that IP. The IP address was written in:

      /etc/NetworkManager/system-connections/Wired\ connection\ 1

      So if you need to look where the desktop tool has written your settings, you can look at:

      /etc/NetworkManager/system-connections/

  3. shapourthesecond says:

    Great article just wondering about this part: “Remember to replace “enp0s3” with the name of your network adapter??? what do u mean by this? do you mean we should not change this name enp0s3 or changed with our network adapter?
    Cheers

  4. Nikon says:

    Sorry for my english, I would put a secondary IP in the same interface, like old versions (eth0 192.168.1.100… eth0:1 10.10.0.100) I know how to do it in the old versions, but in version 15.10, they have changed the commands. Can you help me?

    • Marin Todorov says:

      Hello Nikon,

      As the answer of this question is too long for the comment section, I would recommend you to submit your question to our Linuxsay discussion forum, where we will gladly provide more details:

      http://linuxsay.com/

  5. Pat Anablak says:

    Where do the Nameserver numbers obtained? Elaborate on “Make sure to use your own settings depending on the network to which you are connected to.”

  6. Pat Anablak says:

    Can you please expand on this?
    IMPORTANT NOTE: For the purpose of this tutorial, I will be using the following settings:

    IP Address: 192.168.0.100
    Netmask: 255.255.255.0
    Gateway: 192.168.0.1
    Nameserver: 8.8.8.8
    Nameserver: 8.8.4.4
    Make sure to use your own settings depending on the network to which you are connected to.
    Where do you obtain the Nameserver numbers?

    • Marin Todorov says:

      Hi Pat,

      This depends on few things:

      If your machine is connected to a router, you should see the settings in there.

      If you are plugging your ISP’s internet cable directly to your computer (i.e no router, modem etc), you should use your ISP’s settings.

      • Nikon says:

        I want 1st IP by DHCP and 2nd static but, in Ubuntu 15.10 mi interface isn’t eth0 it is eno1 and if I put eno1:1 don’t works.

  7. Marin Todorov says:

    Actually the init script does exactly that – it calls systemctl. You can see it in the screenshot:

    “restarting networking (via systemctl): networking service”

    Both scripts do the same.

  8. Arthur says:

    Why not use systemd to restart networking directly?

    `systemctl restart network`

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