Yes, I am aware that similar questions have been asked before on this StackExchange but almost all of those are old and don't seem to be working for me.
After googling around I found that things have been changed ever since rasipbian moved to NetworkManager to manage the network stuff instead of good old ifup/ifdown.
I've also tried to navigate through the documentation of NetworkManager but to no avail.
I just want my pi to have simultaneous access to 2 networks:
- Using the ethernet wire.
- Using the onboard WiFi.
Both these connections must work at the same time so that if I host any application to ip 0.0.0.0, I can access that application from either of the network's devices by using the corresponding IP of pi on that network.
Let me know if I need to be more specific about somethings. :)