when we restart a swarm node the kademlia table's connection changes - nodes which are known about and that were with established connections to us are not prioritized over other nodes.

this, in turn, incurs a big traffic load as a node suddenly has to push for example half of its chunks (bin 0) to all of the new peers in bin 0

this is easily reproducible when running a persistent cluster, shutting it down, then starting the nodes again.

we should prioritize known peers when reconnecting