Hello, This bug should be quickly fixed because ZFS is broken in Debian Testing right now, spl-linux migrated already and zfs-linux did not migrate due to this bug.
Someone reported this problematic mismatch in Kali (which is based on Debian testing): https://bugs.kali.org/view.php?id=4351 Adding the required header is rather easy so I hope that a maintainer can take care of preparing the required update. Given that both packages are tightly coupled, you should consider adding more tight dependencies as well so that this does not happen again in the future. Thank you! -- Raphaël Hertzog ◈ Debian Developer Support Debian LTS: https://www.freexian.com/services/debian-lts.html Learn to master Debian: https://debian-handbook.info/get/