WSL2 cannot access host machine

[pzq-loves-qwq]

Windows Version

Microsoft Windows [Version 10.0.19045.3208]

WSL Version

1.2.5.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

5.15.90.1

Distro Version

Ubuntu 20.04

Other Software

No response

Repro Steps

On the host machine, open an HTTP server via python3 -m http.server. (Any application that opens an HTTP server works. )

In WSL, run cat /etc/resolv.conf to get the IP address of the host machine. (I got 172.21.144.1. )

On the host machine, in a new powershell, run curl http://localhost:8000 and curl http://172.21.144.1:8000. Both commands work fine and print a response.

In WSL, run curl http://cn.bing.com and curl http://172.21.144.1:8000.

Expected Behavior

Both commands run in WSL print the corresponding responses.

Actual Behavior

Only the first command (requesting cn.bing.com) runs fine. The second (requesting the host machine) does not. This means WSL can access the Internet but not the host machine (through the IP in /etc/resolv.conf).

Diagnostic Logs

No response

[OneBlue]

Thank you @pzq-loves-qwq. Relaying from WSL to the host is not supported at the moment so the output you're seeing is the expected behavior.

[spyro2000]

Relaying from WSL to the host is not supported at the moment

WTF...?