Persistent WOL on Ubuntu 24.04

gistfile1.txt

### Step-by-Step Guide

1. **Check for Active Connections:**

   - Use `nmcli` to list active connections and identify the correct connection name:
     ```bash
     nmcli connection show
     ```

2. **Edit the Connection Profile via nmcli:**

   - If you cannot find the `.nmconnection` file directly in `/etc/NetworkManager/system-connections/`, you can use `nmcli` to modify the connection settings:
     ```bash
     sudo nmcli connection modify "your-connection-name" 802-3-ethernet.wake-on-lan magic
     ```

   - Replace `"your-connection-name"` with the actual name of your connection as listed by the `nmcli connection show` command.

3. **Apply Changes:**

   - After modifying the connection, restart NetworkManager to apply the changes:
     ```bash
     sudo systemctl restart NetworkManager
     ```

4. **Verify the Setting:**

   - Confirm that the changes have been applied by checking the connection settings:
     ```bash
     nmcli connection show "your-connection-name" | grep 802-3-ethernet.wake-on-lan
     ```

   - You should see the setting `802-3-ethernet.wake-on-lan: magic` if it has been applied successfully.

By using `nmcli`, you can manage network connections directly through the command line without needing to manually edit configuration files. This approach ensures that your settings are correctly applied even if the configuration files are not easily accessible or do not exist as expected.