Static IP Configuration (Ubuntu 24.04)

Overview

By default, Ubuntu uses DHCP to automatically assign IP addresses. For servers and virtual machines, it is recommended to configure a static IP address so the address does not change.

Step 1: Identify Network Interface

Run the following command to list available network interfaces:

ip a
						

Look for your active interface name (example: enp6s18 ).

Step 2: Locate Netplan Configuration File

Netplan configuration files are stored in:

/etc/netplan/
						

List the files:

ls -la /etc/netplan/
						

View the contents of the configuration file:

sudo cat /etc/netplan/50-cloud-init.yaml
						

Step 3: Edit Netplan Configuration

Open the configuration file:

sudo nano /etc/netplan/50-cloud-init.yaml
						

Example configuration:

network:
  version: 2
  ethernets:
    enp6s18:
      dhcp4: false
      addresses:
        - 192.168.50.100/24
      routes:
        - to: default
          via: 192.168.50.1
      nameservers:
        addresses:
          - 9.9.9.11
          - 149.112.112.11
							

Replace the following values as needed:

• enp6s18 – your network interface name
• 192.168.50.100 – desired static IP address
• 192.168.50.1 – gateway address
• DNS servers – your preferred DNS provider

Step 4: Secure Configuration File

sudo chmod 600 /etc/netplan/*.yaml
						

Step 5: Apply Configuration

sudo netplan apply
						

Step 6: Verify IP Address

Confirm the new static IP address:

ip a show enp6s18
						

Step 7: Test Network Connectivity

ping -c 3 192.168.50.1
						

If successful, your static IP configuration is complete.