HP Proliant DL380P Gen9
BIOS Version P89 V3.3 (latest)
TrueNAS-13.0-U6.2
VT-d enabled in BIOS
This system used to run SCALE with a couple virtual machines and PCI passthru network cards, GPU.
Now I have a fresh install of CORE and for some reason in: Virtual Machines \ Devices \ Add \ PCI Passthru the drop down list is empty.
Any ideas on what could be causing this are welcomed.
Found out that I should list devices in system tunables and it fixed the problem.