---
title: kDNSServiceType_OPT
framework: dnssd
role: symbol
role_heading: Global Variable
path: dnssd/kdnsservicetype_opt
---

# kDNSServiceType_OPT

## Declaration

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

## Discussion

Discussion EDNS0 option (meta-RR)