% podman machine init --cpus 5 --memory 8192 --user-mode-networking=false

Looking up Podman Machine image at quay.io/podman/machine-os:5.5 to create VM
Extracting compressed file: podman-machine-default-arm64.raw: done  
Machine init complete
To start your machine run:

        podman machine start

% podman machine inspect | grep -y networking
          "UserModeNetworking": true,

% 

Usage:
  podman machine init [options] [NAME]

Examples:
  podman machine init podman-machine-default

Options:
      --cpus uint              Number of CPUs (default 5)
      --disk-size uint         Disk size in GiB (default 100)
      --ignition-path string   Path to ignition file
      --image string           Bootable image for machine
  -m, --memory uint            Memory in MiB (default 2048)
      --now                    Start machine now
      --playbook string        Run an Ansible playbook after first boot
      --rootful                Whether this machine should prefer rootful container execution
      --timezone string        Set timezone (default "local")
      --usb stringArray        USB Host passthrough: bus=$1,devnum=$2 or vendor=$1,product=$2
      --user-mode-networking   Whether this machine should use user-mode networking, routing traffic through a host user-space process
      --username string        Username used in image (default "core")
  -v, --volume stringArray     Volumes to mount, source:target (default [/Users:/Users,/private:/private,/var/folders:/var/folders])

      "UserModeNetworking": true,

      "UserModeNetworking": false,