Anecdata: I frequent a local café that only offers Facebook Wi-Fi, which requires you to "check in" on Facebook in order to receive Internet access. I don't ha

Anecdata: I frequent a local café that only offers Facebook Wi-Fi, which requires you to "check in" on Facebook in order to receive Internet access. I don't have a Facebook account but with Firefox TRR, 'google.com' is the only address that resolves just fine — so I search Google (or directly from the address bar) for a website, click through to the result, and the ensuing session is allowed. Rinse and repeat for each new tab. Any direct attempt to browse otherwise (including to google.com with other browsers) always hits the FB captive portal.