Thank you Sean!
We have three IAP-93 units that have been running fine for a few months. Seemingly out of the blue we've had problems with DHCP and/or connectivity between access points and their clients.
I'll elaborate on the IT department's access point since I used it as a testbed for a firmware update. Sadly the firmware update did NOT fix the problem.
I've done several factory resets on this thing (unplug AP, hold down reset pin, plug AP in, release pin after 5 seconds (also tried 10 seconds)). I'll get the "instant" network broadcasting and I can connect to it, but I am not issued an IP. In the web interface (over the wired interface) I see the client listed with an IP of 0.0.0.0
Sometimes I'll get a seemingly-valid IP address, but then as I look at my network settings (in Mac OS 10.9) I will see the IP literally vanish in front of my eyes, to be replaced by a self-assigned 169.x.x.x address.
If I manually assign the IP that was given to me briefly I cannot ping the access point over the wireless connection.
I have this AP on a subnet that is shared with no other Aruba access points. It is set to receive a fixed IP address from our main DHCP server, and that seems to work without issue.
The expected behavior is for the access points to run an internal DHCP server and NAT out from them with zero configuration. This does not seem to be happening.
Thank you very much for any assistance!