nix 0.25.1

Rust friendly bindings to *nix APIs
Documentation 
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use nix::net::if_::*;

#[cfg(any(target_os = "android", target_os = "linux"))]
const LOOPBACK: &[u8] = b"lo";

#[cfg(not(any(
    target_os = "android",
    target_os = "linux",
    target_os = "haiku"
)))]
const LOOPBACK: &[u8] = b"lo0";

#[cfg(target_os = "haiku")]
const LOOPBACK: &[u8] = b"loop";

#[test]
fn test_if_nametoindex() {
    if_nametoindex(LOOPBACK).expect("assertion failed");
}