---
title: sadb_session_id_len
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 10.6+]
path: kernel/sadb_session_id/1588191-sadb_session_id_len
---

# sadb_session_id_len

## Declaration

```occ
u_int16_t sadb_session_id_len;
```