I posted some findings at After recent update, Windows HVM can no longer network through Whonix gateway · Issue #9990 · QubesOS/qubes-issues · GitHub
Workaround in sys-whonix:
echo 1 | sudo tee $(find /proc/sys/net/ipv4 -name arp_ignore)
(this won’t persist restart, needs to be repeated after each sys-whonix start)
Can you find approximately which update broke it? Especially what was the working version of the security-misc package
The update breaking networking is the most recent one. I don’t know if it’s Qubes or Whonix related, since both updated the Whonix Gateway template at the same time. Since then, no other update has been released.
For some reason, I haven’t received a notification for a long time that there are updates for the gateway and workstation templates. There were no updates for about 2 months, possibly more (from 2 to 4 months). I updated manually in the terminal and after that I stopped connecting to Windows HVM. Note: when I updated through the terminal, there was some kind of inscription that had never been there before when updating, in it I had to confirm or deny or write something (I don’t remember what was there) I mean, maybe the problem is not related to the new update, but to the previous one? or before the previous one
I update Qubes daily and the update breaking networking is the one released 20 days ago. All other previous updates worked fine.
When will the bug be fixed?
Whonix documentation for Anonymize Other Operating Systems has been updated. Specifically wiki chapter Gateway Configuration has been added.
When following the updated documentation, HVM networking issues should be resolved.
No further changes are planned at this time.