If your neighbors are household devices then what is the issue? For an IoT it could work because you don't really need a blockchain for your devices, machine to machine. Of course I could be wrong.

As far as DTN goes, the DTN is a more resilient way of doing things. TCP/IP does have some properties for that built into the protocol but we are talking about IoT and TCP/IP alone is not good enough for moving devices.

Artificial immune systems relate not only to this topic but also to Steemit. If you look at the bot issue then you might be able to solve it by creating an artificial immune system which functions to keep the entire ecosystem of bots in a sort of delicate balance. It relates to one of your own posts about bots.

And a bot is just at best an autonomous agent. So when we are talking about autonomous agents we could be talking about bots or drones. In the context of an intrusion detection system you can use an artificial immune system to provide a layer of security for an IoT, but I'll have to provide more details about how that is possible in a future post.

If you want to investigate on your own, consider looking into how an artificial immune system can benefit Steemit in an environment with swarms of bots, and consider the vulnerabilities an IoT network could have in the context of a smart home for example and how an artificial immune system could function to detect intrusions, or hostile changes.