Seems Microsoft heard the voice of customers.
Though network virtualization was introduced with Windows Server 2012, I really don’t think that any of the customer could adopt it and make a production network virtualized. The main road block was network virtualization gateway. As I mentioned in one of my previous post, lot many main stream networking giants are coming up with network virtualization gateway appliance for Hyper-V. But that could be an additional investment and may not be an easy option for everyone.
Even, We had unofficial information that Windows 2012 R2 will fix-up these mess. And seems its true. Windows Server 2012 R2 is coming up with an inbuilt gateway which is capable of Multi-tenant multi-site VPN gateway, NAT gateway for internet access and forwarding gateway for within the Datacenter.