<!--
{
  "availability" : [
    "iOS: 10.0.0 -",
    "iPadOS: 10.0.0 -",
    "macCatalyst: 13.0.0 -",
    "macOS: 10.12.0 -",
    "tvOS: 10.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 3.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "dnssd",
  "identifier" : "/documentation/dnssd/kDNSServiceErr_NATPortMappingUnsupported",
  "metadataVersion" : "0.1.0",
  "role" : "Global Variable",
  "symbol" : {
    "kind" : "Global Variable",
    "modules" : [
      "dnssd"
    ],
    "preciseIdentifier" : "c:@Ea@kDNSServiceErr_NoError@kDNSServiceErr_NATPortMappingUnsupported"
  },
  "title" : "kDNSServiceErr_NATPortMappingUnsupported"
}
-->

# kDNSServiceErr_NATPortMappingUnsupported

```
var kDNSServiceErr_NATPortMappingUnsupported: Int { get }
```

## Discussion

The NAT gateway doesn’t support PCP, NAT-PMP or UPnP.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)