Running commands that access the network about try HOT 5 CLOSED

On cloudlab this works properly. Which machine are you trying this on? Also, what is the output when not using try for the same commands.

from try.

I only get this issue when running on Ubuntu 22, even on Cloudlab. It should have to do with the kernel version.

from try.

Oh, I see, maybe @ericzty could help you to run it on a specific kernel version to figure out exactly what the problem is and when it happens?

from try.

The issue is with the DNS, since /etc/resolv.conf is a link on that ubuntu system (/run/systemd/resolve/stub-resolv.conf), when in Overlayfs the link broke. The issue can be fixed by adding the following to the innermost shell script in try.

rm /etc/resolv.conf
echo "nameserver 1.1.1.1" > /etc/resolv.conf

Another solution that cbuildrt used is to mount the resolv.conf over from the host filesystem, that is probably a better approach.

from try.

Closing this issue since it has nothing to do with the network

from try.