Ubuntu Server 22.04 uses a utility called ‘netplan’ for networking. To set a static IP we need to edit the config file.

In the terminal, go to the netplan config file location:

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cd /etc/netplan/

The file should be called 00-installer-config.yaml. To edit it we need to run nano as root so we can make changes to it.

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sudo nano /etc/netplan/00-installer-config.yaml

The static IP config should look similar to this:

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network:
  renderer: networkd
  ethernets:
    eth0:
      addresses:
        - 192.168.10.5/24
      nameservers:
        addresses: [1.1.1.1,8.8.8.8]
      routes:
        - to: default
          via: 192.168.1.1
  version: 2

• eth0: is the name of my network interface - yours may differ.
• Under addresses: is the static IP to set, you’ll need to use CIDR notation, so /24 is 255.255.255.0.
• DNS servers are configured under nameservers: multiple servers should be command separated.
• The default gateway is set under routes: and - to: default.

Save the file with CTRL + O and press enter to overwrite the existing file.
Exit with CTRL + X

To apply the changes run the following command:

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sudo netplan apply

To confirm the settings, run the following to see the current IP:

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ip addr show eth0

run the following to see the default gateway:

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ip route show

And now you know, and knowing is half the battle.

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-Mike