VEDGE IN-LINE deployment with Controllers On-Prem

[csco11633218]

A question to the Experts. Please refer to the topology attached.

I am trying to deploy a topology to simulate all possibles designs. I am struggling to configure vedge in-line. It seems that 

vedge3 is not routing traffic from other routers (vedge2, on the topology). However pings from the vedge(vedge3 on the topology) itself goes OK! 

I replace the router in question to a IOS-XE and traffic goes OK. Is there any command on vedge routes that need to be enabled?

PS: 

I am not talking about tunnels at this moment, just basic connectivity between the routers.

Any help will be appreciated.

Thanks

[csco11633218]

It seems that nobody knows about it, or nobody is doing labs.