Outgoing local filter breaks all outgoing connections

[Razz4780]

Bug Description

When using an outgoing local filter with a hostname that does not exist locally, all outgoing connections seem to be broken.

Example config:

{
    "feature": {
        "network": {
            "outgoing": {
                "tcp": true,
                "filter": {
                    "local": ["i-do-not-exist-at-all"]
                }
            },
            "dns": true
        }
    }
}

Example app:

use std::net::TcpStream;

fn main() {
    let _stream = TcpStream::connect("py-serv:80").expect("py-serv should exist in the cluster");
}

Steps to Reproduce

1. Deploy the py-serv service in the cluster
2. Run the example app and config from bug description
3. TcpStream::connect fails with Os { code: 5, kind: Uncategorized, message: "Input/output error" }. Layer prints 2024-03-01T10:28:50.776415Z ERROR ThreadId(01) mirrord_layer::error: Error occured in Layer >> IO(Custom { kind: Uncategorized, error: "failed to lookup address information: Temporary failure in name resolution" })

Backtrace

No response

Relevant Logs

No response

Your operating system and version

Linux 6.5.0-21-generic #21~22.04.1-Ubuntu

Local process

---

Local process version

No response

Additional Info

No response