I have a Jetpack AC791L with a static public IP address that I use to distribute correction data from a GPS receiver. I had the Jetpack set up to forward a couple of ports to/from a static private IP (192.168.1.x) so that the data could be accessible from the Internet via the public IP address. I hadn't used the system in some months, and when I tried to use it a few days ago I found that I wasn't able to make the connection. At this point I don't know which part of the system is not working, but there are indications that it has to do with the Jetpack.
One thing I've noticed is that when I view Connected Devices on the Jetpack screen, it shows the GPS receiver with an IP of 0.0.0.0, even though it's configured for a fixed 192.168.1.x address. (The DHCP client on the receiver is turned off, because its address needs to stay the same so the devices that need the correction data know where to find it.) In contrast, when I connect to the Jetpack with a device using DHCP, the Jetpack screen displays the IP address it was assigned by the Jetpack's DHCP server.
My immediate question for AC791L users: When you configure a device with a fixed IP address and it connects to your Jetpack, does the Jetpack display the actual IP address, or 0.0.0.0?
Thanks!