Support for Layer 2 sharing between physical and NVGRE networks
Not supporting Layer 2 network between physical and NVGRE networks is one of the blockers for Network Virtualization adoption.
Jason Messer commented
Thanks for the comment. This feature is definitely one which we are considering and we recognize support in the industry for this feature using VXLAN Gateways (physical switch with hardware VTEP) or virtualized L2 gateways.
Could you provide me more details on the scenario(s) which you would like to see enabled with this feature? e.g. is it mainly for "stretching a subnet" to transition physical workloads to virtual workloads incrementally while maintaining the same L2 domain and L3 subnet; or, is it for DCI and Disaster Recovery / Live Migration