Home Internet Static IP

There is a simple workaround to the static IP problem. First, configure the device that you want to have a static address to DHCP and then plug it into your network with the T-Mobile gateway active. After the device is up and running, find the IP address it was assigned. You can do that with the T-Mobile Internet app, iNet, or any of the utilities available for this purpose. You will probably even be able to see the assigned address directly on the device in the settings menu or screen.

Nest, write down the IP address and then reconfigure the device for a static IP. Enter the IP address you just wrote down and restart the device. It will be at the assigned address and should stay there.

Note that this isn't always a permanent solution since the gateway can always reuse that address for another device on the network, but in my experience, this workaround will suffice in most cases, especially for always-on devices like printers.

It is unfortunate that DHCP can't be configured, at least on my Arcadyan KVD21 5G Gateway, but this kludge will at least help. I don't know what the Time To Live (TTL) setting for DHCP is on T-Mobile gateways, but my guess is it's long enough that the above solution will work.