sudo add-apt-repository ppa:gns3/ppa sudo apt update sudo apt install gns3-gui gns3-server
sudo dpkg --add-architecture i386 sudo apt update sudo apt install gns3-iou
wget http://www.ipvanquish.com/download/CiscoIOUKeygen3f.py python3 CiscoIOUKeygen3f.py
https://docs.gns3.com/docs/getting-started/installation/linux/
How to generate Cisco IOURC licence key on GNS3 VM with Python 3