Unable to use VPN routes from within WSL 2

[bib-gourmand]

Windows Build Number

10.0.19043.1165

WSL Version

• WSL 2
• WSL 1

Kernel Version

5.10.16.3

Distro Version

Ubuntu 18.04

Other Software

No response

Repro Steps

1. Connect to corporate VPN network via Windows 10 VPN connection.
2. From within WSL 2: either ping corporate IP address or trying to ssh into it.

Expected Behavior

Expecting 0% packet loss for ping and a working ssh connection to corporate VPN servers from within WSL 2.

Actual Behavior

Experiencing 95-100% packet loss for ping and no connection via ssh. (While same commands within cmd.exe (and other software from within Windows that connect to corporate IP addresses) work flawlessly.)

root@DESKTOP-XXX1234:~# ping XX.X.X.XX
PING XX.X.X.XX (XX.X.X.XX) 56(84) bytes of data.
64 bytes from XX.X.X.XX: icmp_seq=34 ttl=61 time=89.4 ms
64 bytes from XX.X.X.XX: icmp_seq=40 ttl=61 time=93.2 ms
^C
--- XX.X.X.XX ping statistics ---
47 packets transmitted, 2 received, 95% packet loss, time 47840ms

Diagnostic Logs

No response

[ecalcutin]

Probably duplicate of #7254

[iroperto1]

I have the same issue. When I connect to any connect I can't ping anything, if I disconnect from any connect I can ping or use netutils. I have remove and install WSL without success.

[ecalcutin]

Try to run the following commands inside your WSL

sudo rm /etc/resolv.conf
sudo bash -c 'echo "nameserver 8.8.8.8" > /etc/resolv.conf'
sudo bash -c 'echo "[network]" > /etc/wsl.conf'
sudo bash -c 'echo "generateResolvConf = false" >> /etc/wsl.conf'
sudo chattr +i /etc/resolv.conf

It helped me. I have had same issues while trying to fetch packages from NPM

[iroperto1]

Thanks, I did that I VI to that file and change the servername to my local ISP and that works thanks,

[bib-gourmand]

@ecalcutin @iroperto1 This is not my initial issue. My problem describes that only the VPN network itself is unusable from within WSL2, other outes are. This is not a DNS issue either, hence changing the resolv.conf doesn't mitigate the issue.

This might actually be related: #4915

[bib-gourmand]

Actually I solved it. While digging a bit into other issues (e.g. #4201) I changed the VPN connection type from PPTP to SSL. Now everything works!

[justinmchase]

How do you do change the connection type?