Hello,
I bought firewall device Protectli VP2420, a 4 x 2.5 Gigabit port Firewall appliance... Loaded it with RAM (32GB), SSDs, installed debian 12 and proxmox...
Virtualized OPNsense with PCIe passthrough of 3 NICs to OPNsense VM...
the 4th NIC is connected to switch as proxmox gui / ssh to...