virtual switch infrastructure designed for complex network deployment testing

 This package sets up virtual machines that will act as 2 spine switches and 3
 racks with 2 leaf switches each, to simulate a datacenter setup. All 8
 switches are connected to each other over un-numbered IPv6 link-local
 addresses over which a BGP link is established (ie: this is a bgp-to-the-host
 setup, or L3 only networking).
 .
 Once setup, it is possible for the user to connect virtual machines to this
 virtual infrastructure. Each VM can be connected to 2 rack switches over BGP
 as well.
 .
 The goal of this package is to be able to experiment with virtual machines,
 as if they were physical machines installed into 3 physical racks, with this
 type of L3 connectivity only.