TcpListnener on ipv6

[Coi-l]

I'm trying to start a server on my link-local ip address but I'm getting Error 22 (EINVAL) when starting the server:

    let saddr = SocketAddr::new(
        IpAddr::V6(Ipv6Addr::new(
            0xfe80, 0, 0, 0, 0x62cf, 0x84ff, 0xfecd, 0xbcae,
        )),
        7503,
    );

    let listener = TcpListener::bind(saddr).boxed();
    Server::new(listener).run(root_route).await?;

The same setup for ipv4 works fine. And listening to 0,0,0... on ipv6 works as well.

What am I doing wrong?

[Coi-l]

I solved it.
When opening a link local address you have to specify a scope_id corresponding to the networks interface.
You can use SocketAddr::V6(SocketAddrV6::new(...)) to be able to specify it.