Hi Nico, great idea. Off the top of my head, I would include the complete sessions that were directly related to the DC3:
https://igf2016.sched.com/event/8hsI/isoc-apc-fgv-community-networks-how-to-build-connectivity
https://igf2016.sched.com/event/8htn/dc-on-community-connectivity
https://igf2016.sched.com/event/8htE/ws238-community-connectivity-empowering-the-unconnected

Then, there was a very interesting intervention from Peter Bloom on the BFP on Gender and Access: https://igf2016.sched.com/event/8htm/bpf-gender-access

On our session on Public WiFi there were also some interesting interventions, if not all (I'm not objective :-p):
https://igf2016.sched.com/event/8s5W/ws161-public-wi-fiopen-access-models-in-developing-countries

Finally, in the Best Practice session on Connecting the next billion there were some good points from Nico from the audience and from Jane from the floor: https://igf2016.sched.com/event/8huj/igf-best-practice-forums-bpfs-and-policy-options-for-connecting-the-next-billions

I've heard from Mike that the plenary address from Kathy Brown was very supportive of community networks, and also from Leandro about another session he went to, but I don't know in which ones are these.

Best,