---
title: nd_opt_mtu_reserved
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 12.0+]
path: kernel/nd_opt_mtu/3754128-nd_opt_mtu_reserved
---

# nd_opt_mtu_reserved

## Declaration

```occ
u_int16_t nd_opt_mtu_reserved;
```