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dht doesn't need the whole network interface, only needs a Dialer.
(much reduced surface of possible errors)

The query-- once it's actually attempting to connect to a peer--
should be the one connecting.

![](http://m.memegen.com/77n7dk.jpg)

- use log.* instead of u.*
- use automatic type conversions to .String()
  (Peer.String() prints nicely, and avoids calling b58 encoding
  until needed)

cc @whyrusleeping