---
title: nd_opt_mtu_mtu
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 12.0+]
path: kernel/nd_opt_mtu/3754127-nd_opt_mtu_mtu
---

# nd_opt_mtu_mtu

## Declaration

```occ
u_int32_t nd_opt_mtu_mtu;
```