The cliffs of cloud native software defined networking insanity await you:

https://github.com/containernetworking/cni

https://github.com/firecracker-microvm/firecracker-go-sdk

  Firecracker, by design, only supports Linux tap devices. The SDK provides facilities to:

  Attach a pre-created tap device, optionally with static IP configuration, to the VM. This is referred to as a "static network interface".
  Create a tap device via CNI plugins, which will then be attached to the VM automatically by the SDK. This is referred to as a "CNI-configured network interface"