Deployed Internets Have a Broad Range of Possible Configurations
A single lander with an IPN gateway to a (real or virtual) internal network
Small number of cooperating robots on planetary surface (e.g. Single lander, single rover)
Orbiter-to-surface communication and coordination (e.g. sample return recovery)
Multiple beyond-line-of-sight missions connected by low-orbit communication satellites
Planet-stationary satellites for relay and gateway functions