igd 0.12.1

extern crate igd;

fn main() {
    match igd::search_gateway(Default::default()) {
        Err(ref err) => println!("Error: {}", err),
        Ok(gateway) => match gateway.get_external_ip() {
            Err(ref err) => {
                println!("There was an error! {}", err);
            }
            Ok(ext_addr) => {
                println!("Local gateway: {}, External ip address: {}", gateway, ext_addr);
            }
        },
    }
}