Alternative connection to network and host machine in mirrored mode

[PhyX-Meow]

Windows Version

Microsoft Windows [Version 10.0.26016.1012]

WSL Version

2.0.15.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

5.15.133.1-1

Distro Version

Archlinux

Other Software

I also have wsa installed and running.

Repro Steps

Start an http server on host machine, say python -m http.server.
(1) Try wget www.google.com.
(2) try curl localhost:8000.

Expected Behavior

Both commands should work.

Actual Behavior

Sometimes, usually when I just reboot my computer, (1) works normally and (2) hangs. Sometimes, usually after I run wsl --shutdown then restart wsl, (1) shows that no route to host but (2) works.

Diagnostic Logs

Please let me know what logs I can provide.

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• Mirrored networking mode is not supported (#10823), similarity score: 0.77

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[PhyX-Meow]

#10791
This may be related. Also, here is my .wslconfig

[wsl2]
localhostForwarding=true
networkingMode=mirrored
#networkingMode=NAT
dnsTunneling=true
firewall=false
autoProxy=false

[experimental]
autoMemoryReclaim=gradual
sparseVhd=true

[orobardet]

I have the exact same issue.

I'm using a professionnal VPN on my windows host. Until the network mirror mode appears, we had to do some trick with WSL-VPNkit to have networking inside WSL.
Now with the new networking mode, vpnkit is not needed anymore (way much easier to setup a working WSL), but from time to time, I have the issue mentioned here:

• my wsl distro does not have outoing network access
• and/or from windows I can't access with localhost on a service listening in the wsl distro (but it's accessible from within the wsl)

My .wslconfig:

[wsl2]
memory=20GB
swapFile=C:\\wsl-run\\wsl2-swap.vhdx

[experimental]
sparseVhd=true
autoMemoryReclaim=gradual
networkingMode=mirrored
#dnsTunneling=true

My /etc/wsl.conf:

[boot]
systemd=true

[network]
generateResolvConf=true

[PhyX-Meow]

Added: I'm using latest insider preview build 26016, there's no issue on 23xxx channel.

[chanpreetdhanjal]

Hi. Can you please collect networking logs by following the instructions below?
https://github.com/microsoft/WSL/blob/master/CONTRIBUTING.md#collect-wsl-logs-for-networking-issues

[PhyX-Meow]

This is somehow fixed in latest wsl and latest Windows insider build.