---
title: interface
framework: network
role: symbol
role_heading: Instance Property
path: network/ipv4address/interface
---

# interface

The interface associated with this address.

## Declaration

```swift
let interface: NWInterface?
```

## See Also

### Inspecting Address Properties

- [rawValue](network/ipv4address/rawvalue.md)
- [isLinkLocal](network/ipv4address/islinklocal.md)
- [isLoopback](network/ipv4address/isloopback.md)
- [isMulticast](network/ipv4address/ismulticast.md)