(STRIP was actually in the linux kernel, though I assume long gone or defunct -- the only things I still have talking via Ricochet are 2.4-era)
I have a couple of the lightpole radios (they listen for the modems on 900MHz and speak amongst themselves on 2.4GHz) and scored a single tower radio (talks to the lightpole radios and has an ethernet downlink) and have gotten them to speak with each other, but haven't had time to figure out the route mapping steps -- IIRC the deal is that the packet routing path information is stored upstream and delivered to the downstream radios. No idea if anyone ever decoded that format.
I messed around with this a lot in the immediate post-Ricochet era in between flashing silver WaveLAN cards to gold... fun times. It seems like it would be entirely possible now to run a simulated node using SDR.