Exactly what I said. They made changes to Indy (in this case, enabling IPv6 by default on iOS), shipped the change in a new IDE release (causing some DFM breakages in the process), and didn't tell me they had made the change, I found out later when problem reports started coming in. It is not the first time Embarcadero made changes to Indy and didn't tell me
, though they are usually pretty good about sending patches to me instead so I can review them first. Looking back over my discussions with them, the IPv6 change was made during the 10.1 Berlin beta testing, so it might have been pulled out before the final release. They might be using the IPVersion property in their own code instead.