IP passthrough dhcp not working

Hi!

I have a Digi WR21 router.

I would like to pass the LTE ip address to an external router.

I turned on the ip passthrough function and set it up.

Its working but it doesn’t automatically assign the ip address to the external router, i need to set the ip address manually which is not good.

All kind of DHCP function is turned on.

Hi!

Does this KB help?

https://www.digi.com/support/knowledge-base/how-to-configure-ip-pass-through-mode-on-digi-tran