This library aims to provide robust, well-tested, unified APIs to open Tun/Tap devices on different OSes. It is runtime-agnostic so that you can create your cross-platform wrappers for Tokio, async-std and so on.
It simply provides options to open Tun/Tap device files. More options are listed in the documentation.
```rust use utuntap::tun;
let (mut file, filename) = tun::OpenOptions::new() .packet_info(false) // Only available on Linux .open(10) .expect("failed to open device"); ```
| OS | CI Status | Comment |
| -- | ------ | ------- |
| Linux | 
| musl is also supported. |
| OpenBSD | 
| According to the manual, each packet read or written is prefixed with a tunnel header consisting of a 4-byte network byte order integer containing the address family. The values are listed here. |
| macOS | TUN-only | A 4-byte address family prefixed is required by read and write: [0u8, 0, 0, 2] for IPv4; [0u8, 0, 0, 10] for IPv6. |