How to configure a new network interface for Acura's instance

How to configure a new network interface for Acura's instance

Challenge 

Hystax Acura is based on Ubuntu 20.04, and there is a predefined scope of allowed sudo commands that are needed to set up a new network interface.
Info
Please refer to the KB article below if you are looking to perform this operation for an Acura deployment in VMware :

Solution

Idea
List of the allowed commands:
sudo reboot | halt | shutdown
sudo /etc/init.d/networking restart
sudo ifconfig <ens6> down | up
nano /etc/network/interfaces
1. Establish an ssh connection to the Acura's instance using a key pair that should have been created in advance during the installation.

2. Review the existing network configuration by executing:
      $ nano /etc/network/interfaces

3. To bring up the new interface, execute:
      $ sudo /sbin/ifconfig <name, e.g. ens6> up

4. To check its current parameters, execute :
      $ ifconfig <name, e.g. ens6>

5. Restart the networking service for the changes to take effect:
      $ sudo /etc/init.d/networking restart

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