- `import_flags` ([]string) - Additional flags to pass to VBoxManage import. This can be used to add additional command-line flags such as --eula-accept to accept a EULA in the OVF. - `import_opts` (string) - Additional options to pass to the VBoxManage import. This can be useful for passing keepallmacs or keepnatmacs options for existing ovf images. - `target_path` (string) - The path where the OVA should be saved after download. By default, it will go in the packer cache, with a hash of the original filename as its name. - `vm_name` (string) - This is the name of the OVF file for the new virtual machine, without the file extension. By default this is packer-BUILDNAME, where "BUILDNAME" is the name of the build. - `keep_registered` (bool) - Set this to true if you would like to keep the VM registered with virtualbox. Defaults to false. - `skip_export` (bool) - Defaults to false. When enabled, Packer will not export the VM. Useful if the build output is not the resultant image, but created inside the VM.