CommNet-Remote pilot control mechanics

[IncongruousGoat]

So-I'm trying to control an unmanned lander out at Duna from a manned vessel in orbit of Duna. The two vessels have line of sight to each other (in fact, the first step to the whole process is to undock the lander). I have a Communotron 16 direct antenna on the lander and an HG-5 relay antenna on the manned vessel. By my understanding of the way CommNet works, I should have full control (except maneuver nodes) over the lander, since the orbital vessel has a relay antenna and a pilot. However, I only have partial, no-connection control over the lander. There isn't even a green line indicating an active connection between the vessels. The Kerbal in the vessel in orbit is a pilot (Jeb). Is there something I'm not understanding about the way CommNet works?

Oh, and before anyone says anything, there's absolutely no way to set up direct communication with Kerbin due to the circumstances of this mission.

Here's a screenshot, if it helps any:

Edited October 24, 2016 by IncongruousGoat
Added screenshot

[bewing]

Sorry, you need one more thing to make it work -- an advanced probe core on the manned ship (the 1.25 or 2.5m ones).

[IncongruousGoat]

2 minutes ago, bewing said:

Sorry, you need one more thing to make it work -- an advanced probe core on the manned ship (the 1.25 or 2.5m ones).

Well darn. Time to redesign the entire mission profile.

[bewing]

3 minutes ago, IncongruousGoat said:

Well darn. Time to redesign the entire mission profile.

Yeah, I tried exactly the same thing on Duna during beta, filed a bug report, and then had it explained to me.  

[Aegolius13]

The bigger command pods can do it too, I think, but require 2 pilots on board.