---
title: isBound
framework: networkextension
role: symbol
role_heading: Instance Property
path: networkextension/neappproxyflow/isbound
---

# isBound

A Boolean value that indicates whether the flow has a binding to a specific interface.

## Declaration

```swift
var isBound: Bool { get }
```

## Discussion

Discussion When a binding exists, this value is true, and the networkInterface property indicates the bound interface. If the flow isn’t bound to an interface, this value is false.

## See Also

### Accessing flow information

- [metaData](networkextension/neappproxyflow/metadata.md)
- [setMetadata(_:)](networkextension/neappproxyflow/setmetadata(_:).md)
- [nw_parameters_t](network/nw_parameters_t.md)
- [networkInterface](networkextension/neappproxyflow/networkinterface.md)
- [nw_interface_type_t](network/nw_interface_type_t.md)
- [remoteHostname](networkextension/neappproxyflow/remotehostname.md)