---
title: kDNSServiceProtocol_IPv4
framework: dnssd
role: symbol
role_heading: Global Variable
path: dnssd/kdnsserviceprotocol_ipv4
---

# kDNSServiceProtocol_IPv4

## Declaration

```swift
var kDNSServiceProtocol_IPv4: Int { get }
```

## Discussion

Discussion IPv4 protocol.