- `subnet_id` (string) - The Yandex VPC subnet id to use for the launched instance. Note, the zone of the subnet must match the zone in which the VM is launched. - `zone` (string) - The name of the zone to launch the instance. This defaults to `ru-central1-a`. - `use_ipv4_nat` (bool) - If set to true, then launched instance will have external internet access. - `use_ipv6` (bool) - Set to true to enable IPv6 for the instance being created. This defaults to `false`, or not enabled. -> **Note**: Usage of IPv6 will be available in the future. - `use_internal_ip` (bool) - If true, use the instance's internal IP address instead of its external IP during building.