The loopback interface is a virtual interface on Linux, which allows us to connect to the GNS3 network simulator.
In the following I will explain how to install and configure the TAP Interface on the Linux operating system.
First you should install uml-utilities by typing the command:
sudo apt install uml-utilities
Next step create a virtual interface then assign an IP Address to the interface by typing the command:
sudo tunctl -t tap10 sudo ifconfig tap10 192.168.0.1 netmask 255.255.255.0 up
The last check whether the IP address has been successfully added using