Cellular as a configurable WAN interface

Cypcos
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Cellular as a configurable WAN interface

Please add an option to enable the Cellular interface to be a configurable WAN Interface perhaps labelled ‘CELLULAR’ so that we can configure routing and other rules same as currently for the existing WAN1 and WAN2 interfaces. 

A further warning can be displayed to warn administrators of possible expensive mobile/cell network usage. In addition to the warning a simple MB usage counter could be implemented and perhaps if usage exceeds a given threshold (could be per day or month) it triggers an alert.