Same here. Removing IPtables also removes libvirt-daemon-sytem. If you want a hardenend system all packages which are not used must be removed. So leaving IPtables installed is not an option.
The following packages will be REMOVED: iptables* libvirt-daemon-system* 0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded. After this operation, 3,063 kB disk space will be freed. I am using. ii libvirt-daemon-system 6.0.0-4 ii libvirt-daemon-system-systemd 6.0.0-4 /W
