---
title: "vmnet_network_configuration_create(_:_:)"
framework: vmnet
role: symbol
role_heading: Function
platforms: [Mac Catalyst 13.0+, macOS 26.0+]
path: "vmnet/vmnet_network_configuration_create(_:_:)"
---

# vmnet_network_configuration_create(_:_:)

Creates a network configuration object with the specified operating mode.

## Declaration

```swift
func vmnet_network_configuration_create(_ mode: vmnet_mode_t, _ status: UnsafeMutablePointer<vmnet_return_t>?) -> vmnet_network_configuration_ref?
```

## Parameters

- `mode`: Shared mode or host-only mode.
- `status`: Optional output parameter, returns status.

## Return Value

Return Value A vmnet network handle on success, otherwise NULL.

## Discussion

Discussion All other parameters are optional and have the following default value: External interface: default interface per the routing table NAT44: enabled NAT66: enabled DHCP: enabled DNS proxy: enabled Router advertisement: enabled IPv4 subnet: A /24 suffix, under 192.168/16 (the private address space defined by RFC-1918). IPv6 prefix: random Unique Local Addresses (ULA) prefix Port forwarding rule: none DHCP reservation: none MTU: 1500 Use CFRelease to release the network configuration object.

## See Also

### Creating a network configuration

- [vmnet_network_create(_:_:)](vmnet/vmnet_network_create(_:_:).md)
- [vmnet_network_create_with_serialization(_:_:)](vmnet/vmnet_network_create_with_serialization(_:_:).md)
- [vmnet_network_copy_serialization(_:_:)](vmnet/vmnet_network_copy_serialization(_:_:).md)