Tailscale exit node breaks networking #7561
Description
Describe the issue
When I activate the exit node feature in Tailscale (basically instructing Tailscale to route all traffic through a machine designated as "exit node": https://tailscale.com/kb/1408/quick-guide-exit-nodes#use-an-exit-node), the networking of by Debian 13 VM breaks:
- you can't connect to any machine from inside the VM (DNS resolution works though)
- from the outside you can't connect to the machine (over SSH for example)
Disabling the "exit node" feature in Tailscale resolves the issue (although, quite often, I also have to restart the VM after I disable the exit node). I'm running the latest "standalone" Tailscale client (https://tailscale.com/kb/1065/macos-variants): 1.92.3. Also, the machine designated as "exit node" only has IPv4 connectivity, but even the IPv4 connectivity in the VM breaks (for example curl -v -4 http://google.com).
Configuration
- UTM Version: 474 (115)
- macOS Version: 26.2 (25C56)
- Mac Chip (Intel, M1, ...): 2.3 GHz 8-Core Intel Core i9
Crash log
(not a crash)
Debug log
(attached)
Upload VM
(I don't think it's specific to one VM)