I have my own https proxy.
I try to configure this option in wifi settings via add config like a : data:,function FindProxyForURL(u, h){return "HTTPS example.com:443";}
In fact internet is working in Vanadium via my proxy (i see proxy IP 6&4), wireshark agreed with me, all is good web traffic going through proxy. All other application working too.
But system is sure that " This wifi without internet".
Is this system bug or feature?

    Object_11 I don't know this for sure, but shouldn't that line just be a link to a .pac file? I don't know if it supports whatever you wrote here.

      other8026
      in fact, this design works and everything is fine. Except for the exclamation mark next to the wifi icon. If you turn off the Internet check, everything looks as it should. I have read the link below in detail, I think the problem is still missing some traffic on the proxy side. Thanks for the answers.

      19 days later

      I've run into this before. It seems like the system is recognizing the proxy but not treating it as a full internet connection, which can trigger that "no internet" warning. Some devices get picky when a proxy is used, especially if it's HTTPS or custom-configured like this. In my case, switching to 4G proxies made things more seamless. They often get treated more like regular mobile connections by the system, so you avoid those annoying "no internet" alerts. It could be worth testing a 4G proxy setup to see if it clears up the issue. The trick is that they make the connection look more like everyday mobile traffic.