Now I'm curious. How does DCS handle IFF? Does it just abstract it to some general concept of IFF, or do you actually have to deal with the various modes and such? How does it handle different incompatible countries/generations of IFF?
In short, increasingly well modelled but ultimately only an abstraction due to some fairly obvious reasons. The JF-17 apparently has the best IFF model in the game but I only started flying it yesterday.