Per-group loopback ranges

[jbemmel]

Suppose I have a topology with 2 groups, one representing nodes in data center 1 and a second for data center 2

I'd like to assign loopback IPs that are specific per data center: e.g. 10.1.x.y for DC1, and 10.2.x.y for DC2.
How could I do this?

[ipspace]

I don't think you can (today). We would need loopback.pool attribute.