Enable usage of multiple network interfaces

[DoganM95]

Could you enable/implement the possibility of using multiple network interfaces at the same time, so that e.g. binding "network" detects all devices of multiple subnets?

Background behind this is the following use case:
I connected all my less/non-secure IoT devices into a "guest network" to isolate them from my main network. My NAS server has 2 ethernet ports, one connected to my main network and one to the guest network. Setting any of those two network interfaces as primary in paper-ui system settings makes openhab unable to see the devices of the other network interfaces subnet.

Ideally openhab would use both interfaces and detect all devices of each subnet.