[Question] fx makes DNS requests for every webfetch call

[ngocphamm]

Hi,

I don't know if this is a bug or something intended for fx, but I notice that whenever I ask fx to look at some web page, it will make 2 requests to the site, 1 to port 53, and 1 to port 443. This is caught by OpenSnitch.

One thing about my situation is I run fx inside a Podman container, so the requests were detected as coming from /usr/bin/pasta.

Steps to reproduce

0. Install OpenSnitch on the host box
1. Run a Podman rootless container
2. Inside that container, get fx and run it
3. Ask fx to look at some web page example.com
4. Observe that OpenSnitch will report 2 connections made to that example.com host, 1 on port 53, and the other on port 443.
5. Rejecting any of those 2 request with OpenSnitch will make the web fetch tool call fail

I understand that this is probably a very niche case of using fx, so I don't expect any fix, but if anyone can guide me to the right direction, it'd be greatly appreciated.