It makes these connections even when all the things mentioned in the official "How to stop Firefox from making automatic connections"[1] are disabled. This includes the captive portal detection you allude to.
Regardless:
The browser asks me if I allow it to make these connections.
I tell it in unmistakable and irrevocable terms that I do not.
The browser makes these connections anyway.
The problem was never the connections or the contents of the data stream. You were aware of this before posting your comment, and yet you commented anyway. You are a troll.
Regardless:
The browser asks me if I allow it to make these connections.
I tell it in unmistakable and irrevocable terms that I do not.
The browser makes these connections anyway.
The problem was never the connections or the contents of the data stream. You were aware of this before posting your comment, and yet you commented anyway. You are a troll.
1: https://support.mozilla.org/en-US/kb/how-stop-firefox-making...