Run in client-only mode until stable and reachable

[Stebalien]

This should improve the health of the DHT.

[reinerRubin]

I am going to try this one. Is it still actual?

As I understand "dht_bootstrap.go" can be used to be a probe. So we need add a criteria of being "stable and reachable" here and then add some signals and states to "dht&host".

Is that a right direction or I have completely missed the point?

[Stebalien]

Unfortunately, we need to know that we can accept inbound connections. This means feeding through an instance of https://github.com/libp2p/go-libp2p-autonat/. Unfortunately, that's not exactly easy to do at the moment (one of the motivations for libp2p/go-libp2p#467).

A less involved complementary solution is #330.

[reinerRubin]

Cool, thanks. I'll switch to more accessible tasks.