New NIC causing issues
I just got a 4 port NIC (39Y6138 IBM INTEL PRO/1000 PT Quad port PCIe)
I have a Super micro 1U server as my PF box. I couldn't find my PCI riser so I bought a extender.
The box booted up fine with it and PF sensed the connections. I even migrated the LAN and WAN to them. (card and switch detected the Gb connections)
At the box, I could ping out on the shell (google.com so DNS was working) but the LAN side was not working. One thing also to note was VPN was also down. The DHCP wasn't working and DNS wasn't as well. I couldn't even get to the web config page on port 445. Rebooting didn't help. I tried "re-binding" the lan port by setting up the LAN IP on the card but no dice.
I removed the card, rebound the ports to onboard NIC's and I was back to operation.