---
title: "SCNetworkReachabilityCreateWithAddress(_:_:)"
framework: systemconfiguration
role: symbol
role_heading: Function
path: "systemconfiguration/scnetworkreachabilitycreatewithaddress(_:_:)"
---

# SCNetworkReachabilityCreateWithAddress(_:_:)

Creates a reachability reference to the specified network address.

## Declaration

```swift
func SCNetworkReachabilityCreateWithAddress(_ allocator: CFAllocator?, _ address: UnsafePointer<sockaddr>) -> SCNetworkReachability?
```

## Parameters

- `allocator`: The allocator to use. Pass NULL or doc://com.apple.documentation/documentation/CoreFoundation/kCFAllocatorDefault to use the default allocator.
- `address`: The address of the desired host. The value of this parameter is copied into the new object.

## Return Value

Return Value A new immutable reachability reference. You must release the returned value.

## Discussion

Discussion You can use the reachability reference returned by this function to monitor the reachability of the target host.

## See Also

### Creating a Reachability Reference

- [SCNetworkReachabilityCreateWithAddressPair(_:_:_:)](systemconfiguration/scnetworkreachabilitycreatewithaddresspair(_:_:_:).md)
- [SCNetworkReachabilityCreateWithName(_:_:)](systemconfiguration/scnetworkreachabilitycreatewithname(_:_:).md)