vCMP Host and Guest Communication

Thanks for verifying for me :). Unfortunately I have a design constraint in which I have to make do with the existing b2100 blades purchased. We're migrating away from 4 software Linux load balancers (which are deployed single leg in each of the logical segments). The current deployment was simple to meet the isolation requirements as any traffic inter-network must pass through firewall to get to other segments. PRD is a separate guest so is much simpler but it's the second guest which consists of approx 7 non-prd environments that needed the segmentation. The additional complexity comes in as the environment merged so there is competing architectures (legacy corporate has a flat address space so single RD fits in nicely to existing way of doing things) but the merged environments follow the strict isolation requirement so I've been having a lot of fun figuring out the flows. I guess without having a dedicated guest per environment and no ability to scale up without new blades/compute being purchased, this is the only way to meet the requirement, if reachitecting isn't an option?