fn main() {
    for iface in &ifaces {
        match iface.addr {
            get_if_addrs::IfAddr::V4(ref addr) => {
                match addr.broadcast {
                    Some(ip) => {
                        sock.send_to(&buf, (ip, 8765)).expect("foobar");
                    }
                    _ => ()
                }
            }
            _ => ()
        };
    }
}