How to bind additional IP Ubuntu 22.04

To bind an additional IP address to your Ubuntu 22.04 server, you need to configure the network interface.

Step 1: Identify Network Interface

First, identify the network interface you want to bind the IP address to. Using this command:

ip a

You will see a list of network interfaces example (e.g., eth0, ens33, ens160, etc.).

Step 3: Add Additional IP Configuration

Locate your primary network interface configuration and add the additional IP address under the addresses section.

Example:

If you want to add an additional IP 192.168.1.101/24 to the ens33 interface, the configuration should look like this.

network:
  version: 2
  ethernets:
    ens33:
      dhcp4: no
      addresses:
        - 192.168.1.100/24  # Primary IP
        - 192.168.1.101/24  # Additional IP
      gateway4: 192.168.1.1
      nameservers:
        addresses:
          - 8.8.8.8
          - 8.8.4.4

Step 4: Apply the Configuration

Save the file and apply the configuration using:

sudo netplan apply

Step 5: Verify the IP Binding

Check if the additional IP has been successfully added:

ip a

You should see both IP addresses listed under your network interface.

Troubleshooting Tips

If you get an error after applying the configuration, use:
```
sudo netplan try
```
This command helps to test the configuration before applying it permanently.