I have walked back some changes but I thought I would now change the ENTIRE hardware platform.
New...
An ASUS Prime A320M-K Motherboard. Together with the 2200 CPU is cheap and it comes with a whisper quit fan and heatsink glue already applied so you just need to be careful screwing the fan to the motherboard - and of course take care inserting the CPU. Not to mention it has VGA which is perfect for a router appliance. Also has serial port, but I don't expect to need it.
So this motherboard has a Realtek ethernet port onboard I also use an Intel 1000 card in a PCI slot for the WAN. BSD/pfsense has booted and installed correctly to my observations.
But why do I still get this message... ?
code ```Sep 6 19:38:24 pfsense kernel: arpresolve: can't allocate llinfo for 99.2xx.xxx.1 on em0