[ovirt-users] [oVirt 4.4][RockyLinux 8.9] Engine loses connectivity with freshly installed hosts after network setup

Hello I have 2 freshly installed hosts with rockylinux 8.9 Then after setting up the network via ovirt and reboot, I lost the communication between ovirt engine and the host (even ping does not work). Note that I have a virtualized pfsense between engine and host. All firewalls are opened. From anywhere else than the engine subnet I can communicate with the host and the engine can also communicate with any device on the same subnet than the host... so my thought is that there might be some incompatible parameter between pfsense and the host.... but then 'why did it work before the vdsm installation ? :-/ ). This last fact makes me think that it's a vdsm/nmstate/ethtool parameter that I have to tune... Any help would be much appreciated...