gistfile1.txt

#![feature(lookup_host)]
use std::net;
use std::env;


fn main() {
    let args: Vec<_> = env::args().collect();
    if args.len() < 2 {
        println!("usage: main <hostname>");
		return;
    }

	for host in net::lookup_host(&args[1]).unwrap() {
		let addr = host.unwrap();
		match addr {
			net::SocketAddr::V4(ipv4) => println!("ipv4: {}", ipv4),
			net::SocketAddr::V6(ipv6) => println!("ipv6: {}", ipv6),
		}
	}
}