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!

It works better than a container's proxy.

slightly tough to get started with, but ultimately functional af! fabulous job.

Goog

Since I am unable to directly reply to other users' comments, I am commenting here instead.

Regarding the issue reported by some users that the extension cannot be used, it is suggested to try changing the value of the "network.proxy.type" setting in about:config. If the value is 0, you can try changing it to 1. If it is PAC, you can change it to 5.

Works very well and the dev responds on GitHub, which is a great extra.

Excelente