---
title: "SCNetworkInterfaceGetExtendedConfiguration(_:_:)"
framework: systemconfiguration
role: symbol
role_heading: Function
path: "systemconfiguration/scnetworkinterfacegetextendedconfiguration(_:_:)"
---

# SCNetworkInterfaceGetExtendedConfiguration(_:_:)

Returns the extended configuration settings associated with the specified interface.

## Declaration

```swift
func SCNetworkInterfaceGetExtendedConfiguration(_ interface: SCNetworkInterface, _ extendedType: CFString) -> CFDictionary?
```

## Parameters

- `interface`: The network interface.
- `extendedType`: The type of extended information (for example, EAPOL).

## Return Value

Return Value The configuration settings associated with the interface, or NULL if no configuration settings are associated with the interface or an error occurred.

## See Also

### Configuring Network Interfaces

- [SCNetworkInterfaceCopyAll()](systemconfiguration/scnetworkinterfacecopyall().md)
- [SCNetworkInterfaceCopyMTU(_:_:_:_:)](systemconfiguration/scnetworkinterfacecopymtu(_:_:_:_:).md)
- [SCNetworkInterfaceCopyMediaOptions(_:_:_:_:_:)](systemconfiguration/scnetworkinterfacecopymediaoptions(_:_:_:_:_:).md)
- [SCNetworkInterfaceCopyMediaSubTypeOptions(_:_:)](systemconfiguration/scnetworkinterfacecopymediasubtypeoptions(_:_:).md)
- [SCNetworkInterfaceCopyMediaSubTypes(_:)](systemconfiguration/scnetworkinterfacecopymediasubtypes(_:).md)
- [SCNetworkInterfaceCreateWithInterface(_:_:)](systemconfiguration/scnetworkinterfacecreatewithinterface(_:_:).md)
- [SCNetworkInterfaceForceConfigurationRefresh(_:)](systemconfiguration/scnetworkinterfaceforceconfigurationrefresh(_:).md)
- [SCNetworkInterfaceGetBSDName(_:)](systemconfiguration/scnetworkinterfacegetbsdname(_:).md)
- [SCNetworkInterfaceGetConfiguration(_:)](systemconfiguration/scnetworkinterfacegetconfiguration(_:).md)
- [SCNetworkInterfaceGetHardwareAddressString(_:)](systemconfiguration/scnetworkinterfacegethardwareaddressstring(_:).md)
- [SCNetworkInterfaceGetInterface(_:)](systemconfiguration/scnetworkinterfacegetinterface(_:).md)
- [SCNetworkInterfaceGetInterfaceType(_:)](systemconfiguration/scnetworkinterfacegetinterfacetype(_:).md)
- [SCNetworkInterfaceGetLocalizedDisplayName(_:)](systemconfiguration/scnetworkinterfacegetlocalizeddisplayname(_:).md)
- [SCNetworkInterfaceGetSupportedInterfaceTypes(_:)](systemconfiguration/scnetworkinterfacegetsupportedinterfacetypes(_:).md)
- [SCNetworkInterfaceGetSupportedProtocolTypes(_:)](systemconfiguration/scnetworkinterfacegetsupportedprotocoltypes(_:).md)