I think the mentioned line is usually called the " Apocalypse Attack";
This is an article i have found some time ago on this nice website:

http://www.kenilworthchessclub.org/articles/opening/apocalypse/apocalypse.htm

It's a pretty detailed article, and the author seems to agree that ...g6 setups are stronger than ...e6 ones, but i vaguely remember reading in this forum that later analysis showed ...g6 lines as weaker. Try to search in the older posts "apocalypse attack". I hope this helps!

Thanks for your replies! How can I forget that the pawn is still on d2, it must have been late

I think I'm going for the setup with g6, ignoring the knight on e5 for a while. Maybe f6/e5 is also possible, although this is very optimistic

According to GM Papaioannou, in every exchange variation in the Caro Kan (including Panov) Black can play ...g6 and reach a comfortable position. This is a case here also.

The one time I've gotten to face it I went with Nf6/g6/Bg7/0-0/Bf5 (which it turns out is the way my theoretical sources suggest for equality, unknowing as I was at the time), etc. The line ends up having similarity to normal exchange lines. If they play Bb5+ then Nbd7 works fine in that case.

After ...Qc7 white would play Bf4, with the obvious threat Ng6, and the queen would have to make another move 

My dear chess friends,

Could anybody tell me how I should play against this line? I would like to get rid of this knight on e5, but I couldn't really find a good way to do this. I'm not that eager to give up the bishop pair after for instance 4...Nc6 5. Bb5 Bd7 6. Nxd7 Qxd7 (or the same motive in other variations). Maybe I should just stick to this line and argue that the pair of bishops isn't that important in this type of position. But maybe there is a better continuation, after all white is probably playing this in order to get the pair of bishops

How have you Caro-Kann players dealt with this variation? I find it quite annoying to be honest, although it's a silly line in my opinion

Thanks in advance.