autoProxy doesn't work with proxy requiring Kerberos / NTLM authentication

[AndreasAckermannTSystems]

Windows Version

Microsoft Windows [Version 10.0.22621.2428]

WSL Version

2.0.9.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

5.15.133.1-1

Distro Version

Ubuntu 22.04

Other Software

Corporate proxy requiring Kerberos / NTLM authentication

Repro Steps

1. Be inside a corporate network environment with a proxy that requires Kerberos / NTLM Authentication
2. Configure WSL with the following .wslconfig:

[wsl2]

networkingMode = mirrored
firewall = true
autoProxy = true

3. Run apt-get update or curl for any webpage

Expected Behavior

Proxy is configured and authenticated with automatically, apt-get update and curl work out-of-the-box.

Actual Behavior

apt-get update gives me errors like:

Err:1 http://security.ubuntu.com/ubuntu jammy-security InRelease
  407  authenticationrequired [IP: 10.XXX.XXX.XXX 8080]

curling for any webpage, I receive a reply from the proxy containing the following headers and a message in the HTML page that I am not authenticated via Kerberos / NTLM:

< Proxy-Connection: Keep-Alive
< Proxy-Authenticate: Negotiate
< Proxy-Authenticate: NTLM

Diagnostic Logs

No response

[nvtienanh]

Me too