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Prevent the firewall from being compromised through libvirtd

Hello @ all

The libvirt-daemon compromises the packet-filtering-rules at daemon-startup, before any VM is started. To prevent this, I first have create a hook-script which deletes existing rules, but apparently these rules are set after the hook. Removing the defined networks was no solution either. Worst of all is, a service restart of the daemon may even completely neutralize the firewall.

Is there a solution to prevent this undesirable behavior? No matter how or who what do or with what network configuration a VM is started, the daemon must not compromise the firewall, by altering them. The Firewall is untouchable and taboo.

What can I do to disable that? Thank you!

Best Regards

$ dpkg -l libvirt-daemon
||/ Name                     Version      Architektur  Beschreibung
ii  libvirt-daemon           5.0.0-4      amd64        Virtualization daemon

$ lsb_release -a
Distributor ID:	Debian
Description:	Debian GNU/Linux 10 (buster)
Release:	10
Codename:	buster

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