Packer snapshot build fails: Timeout waiting for SSH after enabling Rescue Mode

[LeonardoDSchule]

Hey

I’m trying to build my own snapshot using the official hcloud-microos-snapshots.pkr.hcl file from the kube-hetzner repository.

Unfortunately, the snapshot build process consistently fails at the SSH step after enabling Rescue Mode and rebooting the server. Here’s the relevant part of the output:
==> hcloud.microos-x86-snapshot: Using SSH communicator to connect:
==> hcloud.microos-x86-snapshot: Waiting for SSH to become available...
==> hcloud.microos-x86-snapshot: Timeout waiting for SSH.
==> hcloud.microos-x86-snapshot: Destroying server...

It seems that even though the server is created and rebooted into Rescue Mode, Packer is unable to establish an SSH connection. I’m using a valid Hetzner API token, and the SSH key is uploaded successfully by Packer.

Has anyone else experienced this?
Is there a known workaround or something I might be missing in the configuration?