---
title: mtu
framework: networkextension
role: symbol
role_heading: Instance Property
path: networkextension/nevpnprotocolikev2/mtu
---

# mtu

The Maximum Transmission Unit (MTU) size in bytes to assign to the tunnel interface.

## Declaration

```swift
var mtu: Int { get set }
```

## See Also

### Accessing other IKEv2 properties

- [deadPeerDetectionRate](networkextension/nevpnprotocolikev2/deadpeerdetectionrate.md)
- [NEVPNIKEv2DeadPeerDetectionRate](networkextension/nevpnikev2deadpeerdetectionrate.md)
- [useConfigurationAttributeInternalIPSubnet](networkextension/nevpnprotocolikev2/useconfigurationattributeinternalipsubnet.md)
- [disableMOBIKE](networkextension/nevpnprotocolikev2/disablemobike.md)
- [disableRedirect](networkextension/nevpnprotocolikev2/disableredirect.md)
- [enablePFS](networkextension/nevpnprotocolikev2/enablepfs.md)
- [enableRevocationCheck](networkextension/nevpnprotocolikev2/enablerevocationcheck.md)
- [strictRevocationCheck](networkextension/nevpnprotocolikev2/strictrevocationcheck.md)