---
title: definition
framework: network
role: symbol
role_heading: Type Property
path: network/nwprotocolip/definition
---

# definition

The system definition of the Internet Protocol.

## Declaration

```swift
static let definition: NWProtocolDefinition
```

## See Also

### Configuring IP Connections

- [NWProtocolIP.Options](network/nwprotocolip/options.md)