Did you know that the initial DNS requests for the websites you visit are completely leaked by this add-on, even when the add-on’s “Proxy DNS” option is enabled? Websites that check for DNS leaks cannot detect this because they cannot test for leaks by simply having you visit a website. Instead, they check for leaks by sending requests through JavaScript.

If preventing DNS leaks is important to you, don’t use this add-on. Instead, use Firefox’s built-in proxy settings with the “Proxy DNS” option enabled!