UnityWebRequest and System Proxy

I have a server running on a machine with ip = 192.168.79.12.
I have a proxy on a machine with ip = 192.168.79.24.
On my machine where I'm running a builded Unity app (v2019.2.13f1), I have a Windows 10 with the system proxy. Here is my system proxy settings:

ip: 192.168.79.24

port: 3128

I need to make http requests to my server without proxy in my Unity app. But UnityWebRequests doesnt have option like in python requests session.trust_env = False

I'm tried to add a mask to the system proxy for ignore ip using proxy:

192.168.179.*;

But my application continues make requests through the proxy. Other applications works in proper way. For example, Google Chrome go to this server without proxy

If I add

192.168.179.24;

instead mask, my application works in proper way: UnityWebRequests go directly to my server.

So, the questions are:

Why the mask doesn't work properly?
Is there any solution to use UnityWebRequest without setup the system proxy and dont use the proxy?