#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(ip_as_octets)]
use std::net::Ipv6Addr;
fn main() {
    assert_eq!(
        Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0).as_octets(), & [255, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0]
    )
}