Subj : Facebook To : All From : Bj”rn Felten Date : Thu Feb 13 2014 23:30:00 Anyone noticed anything IPv6 special about Facebook recently? Suddenly I couldn't log in as usual, but had to "update" my account. And no, no fishing attempt (I'm confident that I can spot those), it seems to have been totally legit. The difference now is that it's my IPv6 number that is registered to my FB account. Very strange, but also rather interesting. Not that I care much about FB nowadays, but still... --- Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.9.1.16) Gecko/20101125 * Origin: news://felten.yi.org (2:203/2) .