Dynamic gateway policy

[keropiko]

Hello all,

could someone please explain me this new option in the interfaces configuration:

Dynamic gateway policy    
This interface does not require an intermediate system to act as a gateway
If the destination is directly reachable via an interface requiring no intermediary system to act as a gateway, you can select this option which allows dynamic gateways to be created without direct target addresses. Some tunnel types support this.

I use pppoe and 3g wan-usb ppp with dynamic ip for wan , wireguard and openvpn.
In which case should i use it, i cannot understand "intermediate system" meaning.

Thank you

[iask]

This could be my 2nd question on this forum.

I wanna know more about an "intermediate system" ...