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IG-EXP-7

-                      v26
+                      v27
 Defined an RSpec that requests one three VMs at the GPO rack and three VMs at the Utah rack. For each rack aggregate, one of the VMs will be an end-point host and the other two VMs will be click routers.
 The RSpec generated is [http://groups.geni.net/geni/browser/trunk/GENIRacks/InstaGENI/Spiral4/RSpecs/AcceptanceTests/IG-EXP-7/IG-EXP-7.rspec IG-EXP-7.rspec] and the topology is shown in the following image using client_ids defined in the RSpec:[[BR]]
+The RSpec generated is [http://groups.geni.net/geni/browser/trunk/GENIRacks/InstaGENI/Spiral4/RSpecs/AcceptanceTests/IG-EXP-7/IG-EXP-7.rspec IG-EXP-7.rspec].  This RSpec defines IP addresses because GRE tunnels require that an address be defined.  The topology and address scheme are shown below using client_ids defined in the RSpec:[[BR]]
 [[Image(IG-EXP-7.jpg)]]
 ''Note: link-0 and link-3 are GRE tunnels''
+''Note: link-1 and link-2 are GRE tunnels.''
 == 4. Define a request RSpec for three VMs at Utah InstaGENI ==