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# NWProtocolIP.Options

A container of options for configuring how IP is used on a connection.

```
class Options
```

## Topics

### Selecting an IP Version

[`var version: NWProtocolIP.Options.Version`](/documentation/Network/NWProtocolIP/Options/version-swift.property)

A required IP version that disables all other versions for a connection.

[`enum Version`](/documentation/Network/NWProtocolIP/Options/Version-swift.enum)

IP versions to require on connections and listeners.

### Customizing IP Behavior

[`var shouldCalculateReceiveTime: Bool`](/documentation/Network/NWProtocolIP/Options/shouldCalculateReceiveTime)

A Boolean that indicates whether a connection delivers receive timestamps for IP packets.

[`var hopLimit: UInt8`](/documentation/Network/NWProtocolIP/Options/hopLimit)

The default hop limit for packets a connection generates.

[`var useMinimumMTU: Bool`](/documentation/Network/NWProtocolIP/Options/useMinimumMTU)

A Boolean indicating that the connection uses the  minimum MTU value, which is 1280 bytes for IPv6.

[`var disableFragmentation: Bool`](/documentation/Network/NWProtocolIP/Options/disableFragmentation)

A Boolean that indicates whether fragmentation is disabled on outbound packets.

### Instance Properties

[`var disableMulticastLoopback: Bool`](/documentation/Network/NWProtocolIP/Options/disableMulticastLoopback)

[`var localAddressPreference: NWProtocolIP.Options.AddressPreference`](/documentation/Network/NWProtocolIP/Options/localAddressPreference)

### Enumerations

[`enum AddressPreference`](/documentation/Network/NWProtocolIP/Options/AddressPreference)

## Relationships

### Conforms To

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Sendable`](/documentation/Swift/Sendable)

### Inherits From

[`NWProtocolOptions`](/documentation/Network/NWProtocolOptions)

---

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