This depends on the modem and its supported operating modes.
With the average Quectel modem you can switch it to ECM mode and then bridge the wwan with either a LAN port or a VLAN on it. See Using a router as "dumb" LTE gateway? - #25 by AndrewZ
This depends on the modem and its supported operating modes.
With the average Quectel modem you can switch it to ECM mode and then bridge the wwan with either a LAN port or a VLAN on it. See Using a router as "dumb" LTE gateway? - #25 by AndrewZ