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This is a simple tool to generate testing networks of virtual machines. It was written primarilly for my bachelor's thesis.

Usage:

Edit gen_machines.py to define the desired network
Optionally edit the templates of config files
Run it
Create pre-installed Alpine Linux 3.15.4 disk image in dummydisk.img (you can use gen_dummy.sh for that)
Run gen_disks.sh as root – this creates customized disk images for all the machines
Append output/bridge.conf to your /etc/qemu/bridge.conf in order to be able to connect your VMs to bridges as regular user
Run output/gen_bridges.sh to create the bridge interfaces on your machine.