Originally Posted by sehgalanuj

I've noticed more often than not that over India Wifi is disabled. Sometimes, but very rarely, it does work. Normally once you leave Indian airspace Wifi starts working again.

EDIT: I was on F-HTYK about a week ago, on DEL-CDG as well, and this was working once outs of Indian airspace. There were occasional dropouts. I've added this one to the wiki.