PfSense can only see one interface
How ironic, 5 minutes after posting the topic I do find the solution.
I started searching for the board instead of the NIC.
solution in here.
hint.agp.0.disabled=1 in my loader.conf
Just attempted a fresh install of the latest pfSense.
Upload assigning interfaces, I let it autodetect the WAN.
If finds interface em0
However, it cannot find the second interface to assign this to the LAN.
Supermicro PDSBM-LN2+ board which should have these NICs
2 x Intel 82573 Gigabit PCI-Express Ethernet
I've checked the FreeBSD list and they seem to be supported.
However I can only get one to show.
I also know it's not broken since I had a Windows server on this box yesterday and the NICs were working just fine.