---
title: ipv6Settings
framework: networkextension
role: symbol
role_heading: Instance Property
path: networkextension/nepackettunnelnetworksettings/ipv6settings
---

# ipv6Settings

The tunnel IP version 6 settings.

## Declaration

```swift
@NSCopying var ipv6Settings: NEIPv6Settings? { get set }
```

## Mentioned in

Routing your VPN network traffic

## Discussion

Discussion This property contains the IPv6 routes specifying what IPv6 traffic to route to the tunnel, as well as the IPv6 address and network prefix to assign to the TUN interface.

## See Also

### Accessing network properties

- [ipv4Settings](networkextension/nepackettunnelnetworksettings/ipv4settings.md)
- [NEIPv4Settings](networkextension/neipv4settings.md)
- [NEIPv6Settings](networkextension/neipv6settings.md)
- [tunnelOverheadBytes](networkextension/nepackettunnelnetworksettings/tunneloverheadbytes.md)
- [mtu](networkextension/nepackettunnelnetworksettings/mtu.md)