don't bother tracking the orignal node topology
don't bother tracking the orignal node topology

We always join with the original renderer and hence all the nodes
produced by ipToNode will get their other data, including topology,
via that route.

alban/scope,weaveworks/scope,alban/scope,kinvolk/scope,alban/scope,weaveworks/scope,alban/scope,weaveworks/scope,kinvolk/scope,alban/scope,kinvolk/scope,kinvolk/scope,kinvolk/scope,alban/scope,weaveworks/scope,weaveworks/scope,weaveworks/scope,kinvolk/scope