What for used RMNET1 / qcqmi1 interface ?

Hello,
anybody know reason to have 2 rmnet interfaces ?
rmnet0 used for data, but rmnet1 is always inactive.
How to use it?
What for ?

Thx!

You can start a second PDN up on the unit if the application requires it, this can only be done through the QMI API’s and not AT commands.

Regards

Matt