title: Does WebRTC Leak Your Real IP without User Interaction?
body: <p>It has been discussed many times on Stackoverflow that by default WebRTC technology <a href="https://www.expressvpn.com/webrtc-leak-test" rel="nofollow noreferrer">leaks your real IP</a> even if your using a proxy to browse the web. What I haven't seen discussed is whether this requires the end user to click a button to enable this kind of leak or whether the leak occurs regardless of any action taken by the user.</p>
  <p>For example, when you go to <a href="https://www.expressvpn.com/webrtc-leak-test" rel="nofollow noreferrer">Express VPN</a> they require you press a button to test for WebRTC leak. My question is - is this done for privacy reasons or somehow the button activates WebRTC tech so it can leak your IP?</p>
  <p>In other words, assuming you never need to use WebRTC tech (just browser a blog or eCommerce shop) and all you do is click a few links - can a website still detect your real IP through WebRTC?</p>
  <p>Thanks</p>