My solution to that is to open http://example.com/ http://example.com/ (instead of, e.g. Google) after connecting to Wi-Fi. It doesn't use SSL (so it works) and

My solution to that is to open http://example.com/ http://example.com/ (instead of, e.g. Google) after connecting to Wi-Fi. It doesn't use SSL (so it works) and I have little use for it the rest of the time (so if the Firefox DNS cache gets messed up, it doesn't matter).