Is there any work being done on using some kind of zero-conf service discovery protocol so that lightweight clients can find a full node on the same LAN to peer with rather than having to tie up WAN bandwidth?

I envision a future where lightweight devices within a home use SPV over WiFi to connect with a home server which in turn relays the transactions they create out to the larger and faster relays on the Internet. 

In a situation where there are hundreds or thousands of small SPV devices in a single home (if 21, Inc. is successful) monitoring the blockchain, this could result in lower traffic across the slow WAN connection.  And yes, I realize it could potentially take a LOT of these devices before the total bandwidth is greater than downloading a full copy of the blockchain, but there's other reasons to host your own full node -- trust being one.

--
James G. Phillips IV  
"Don't bunt. Aim out of the ball park. Aim for the company of immortals." -- David Ogilvy

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