Have you emailed the manufacturer on how to reset the machine? I would do that first cos the manufacturer knows best and they should modify their UI to reject invalid IPs too.
Look inside the machine. Is there a jumper or switch inside labeled reset? Or some sort of battery? I hope there is a reset switch somewhere inside.
This a tool to find IP from mac address:
http://www.youngzsoft.net/cc-get-mac-address/Yep. Yep. It's the Chinese Labour Day holiday for the next few days. Figures right? I hope to get this fixed before then. I see a bunch of these machines out there now, so maybe someone has had a similar issue before.
I did look all over the control board for a reset and haven't found anything marked as such. There's the control board from lketc.com and a Raspberry Pi attached to it. No battery either. All good thoughts though.
That tool is to find the MAC address from the IP address. That's not the problem. I need the IP address and I can get the MAC address from Wireshark with a direct connection.
Thanks for the effort though. Greatly appreciated.
Thanks, Dan