WSL2 cannot connect to Internet occasionally [DNS ok, connectivity with host ok]; reset network has chance to fix this temporary

[huweiATgithub]

Version

Microsoft Windows [Version 10.0.19044.1469]

WSL Version

• WSL 2
• WSL 1

Kernel Version

5.10.60.1

Distro Version

Ubuntu 20.04

Other Software

No response

Repro Steps

Don't know.

ping google.com

Expected Behavior

It should receive some responses.

Actual Behavior

-> ping google.com

PING google.com (142.251.40.174) 56(84) bytes of data.
^C
--- google.com ping statistics ---
136 packets transmitted, 0 received, 100% packet loss, time 140436ms

Diagnostic Logs

Connectivities issue:

• The connectivity between host and wsl2 is ok; I can successfully ping the host from wsl2 and vice visa.
• The wsl2 has no problem in resolving name; it resolves google to 142.251.40.174; I can ping this address in the host machine and through the host browser.

Chances to resolve:

• Sometimes connecting to a VPN and then disconnecting can resolve this. (sometimes don't)
• Network reset the host machine seems to always resolve this;

The connectivity to public addresses lose occasionally even after resolving it by the last two steps.

How to fix this? Or how to trace where does the packet lose?

[Yvand]

I experience the exact same behaviour: DNS resolution works, ping of the host works, but all bash commands which need to connect to Internet hang and eventually fail.
For example, if I run git push I get this error after some time:

ssh: connect to host ssh.dev.azure.com port 22: Network is unreachable
fatal: Could not read from remote repository.

More details:

• Docker containers are not affected and can connect to Internet normally.
• It happens only (and always) when I connect my laptop to internet through my smartphone. I set it as a metered connection, but it does not help if I switch the metered connection setting to off.

[kamorrissey]

I have what sounds like a similar problem. Within a couple minutes of rebooting or logging out and logging in, I can ping google.com, but "curl google.com" times out. It does this with the firewall (McAfee) on or off. I am running Windows 11, "Ubuntu" MS Store image. Definitely set for WSL 2. Nothing special about network, just 5GHz wi-fi to a cable model/router. I have apt installed a lot of stuff, because I was trying to use WSL for development, so I have no idea what could be significant.

I have a Windows 10 desktop on the network with similar applications and packages installed. It does not have this WSL problem.

networking_bat.txt

I tried attaching a zip of wsl.etl, but it won't let me.

[huweiATgithub]

From recent experience, now:

• fresh start the windows: ping host ok, ping google.com can find IP but no response. [the IP is visitable in host]
• connect to VPN then disconnect: network in wsl2 works smoothly. [VPN is ExpressVPN]

[huweiATgithub]

I experience the exact same behaviour: DNS resolution works, ping of the host works, but all bash commands which need to connect to Internet hang and eventually fail. For example, if I run git push I get this error after some time:

ssh: connect to host ssh.dev.azure.com port 22: Network is unreachable
fatal: Could not read from remote repository.

More details:

• Docker containers are not affected and can connect to Internet normally.
• It happens only (and always) when I connect my laptop to internet through my smartphone. I set it as a metered connection, but it does not help if I switch the metered connection setting to off.

Maybe set cell phone network to private will work (if it has not been set so).

[Ikki-Dai]

I have similar issues,ping works fine, but curl doesn't work and docker containers are not affected
i tried use wireshark to catch the network,
DNS work fine, but not found docker pull network activity go through WSL

[voku]

I see the same problem, DNS is ok but I have no internet access e.g.
root@SUCKUP:/etc/apt# ping google.de PING google.de (142.250.185.99) 56(84) bytes of data. ^C --- google.de ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2095ms

[microsoft-github-policy-service]

This issue has been automatically closed since it has not had any activity for the past year. If you're still experiencing this issue please re-file this as a new issue or feature request.

Thank you!