This is actually pretty cool. Most network configuration tools I know (eg netplan) do not go down to the level of 'clusters'(eg defining how multiple vms would

This is actually pretty cool. Most network configuration tools I know (eg netplan) do not go down to the level of 'clusters'(eg defining how multiple vms would talk to each other in one file) and don't even cover namespaces. I have a similar (hack) at work to configure physical clusters. Would consider switching to something like this mechanism if you supported specifying physical nics. Mine is nowhere as clean as yours. Main thing that's missing specifying 'machines', nics by mac, irq_assignment of nics(auto, vs cpu-ranges or numa names)