[libvirt-users] Libvirt filterref magic

Hi everyone, When i start a libvirt domain (on KVM) with network filtering (using filterref clean-traffic for example), the filter works ! But ... i don't understand how/why it works :( Indeed when i look at ebtables -L iptables-save & arptables-save (and KVM command), I see no filtering rules (which is surprising because clean-traffic requires at least ebtables to be installed). Is it normal ? Do i miss some xxtables administration command to see them ? What appends if i do a arptables-restore, iptables-restore after the vm startup ? Does it remove network filtering rules from xxtables ? No impact ? Thx by advance for your help ZZ, what is the magic behind my questioning ?