---
title: kIOMediumOptionLoopback
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1645757-anonymous/kiomediumoptionloopback
---

# kIOMediumOptionLoopback

## Declaration

```occ
kIOMediumOptionLoopback = IFM_LOOP
```