---
title: rt_msghdr
framework: Kernel
role: symbol
platforms: [macOS 10.6+]
path: kernel/rt_msghdr
---

# rt_msghdr

## Declaration

```occ
struct rt_msghdr {
    ...
};
```

## Topics

### Instance Properties

- [rtm_addrs](kernel/rt_msghdr/1574652-rtm_addrs.md)
- [rtm_errno](kernel/rt_msghdr/1574611-rtm_errno.md)
- [rtm_flags](kernel/rt_msghdr/1574690-rtm_flags.md)
- [rtm_index](kernel/rt_msghdr/1574586-rtm_index.md)
- [rtm_inits](kernel/rt_msghdr/1574681-rtm_inits.md)
- [rtm_msglen](kernel/rt_msghdr/1574597-rtm_msglen.md)
- [rtm_pid](kernel/rt_msghdr/1574692-rtm_pid.md)
- [rtm_rmx](kernel/rt_msghdr/1574687-rtm_rmx.md)
- [rtm_seq](kernel/rt_msghdr/1574595-rtm_seq.md)
- [rtm_type](kernel/rt_msghdr/1574642-rtm_type.md)
- [rtm_use](kernel/rt_msghdr/1574674-rtm_use.md)
- [rtm_version](kernel/rt_msghdr/1574614-rtm_version.md)