--------------------------
- [change] **Potentially backward incompatible**:
added support for dialup interfaces (ppp, pppoe, pppoa,
3g, qmi, ncm, wwan, pptp, 6in4, aiccu or l2tp) to openwrt backend.
This change is backward incompatible if the same type of configuration
was achieved using a workaround, in these cases the configuration
will have to be upgraded to use the new format.
- [feature] Added support for modem manager interfaces