Connecting two DPDK applications through fake virtual functions

[Antonio Di Bacco]

I have two DPDK applications that are using virtual functions built on top
of two physical functions that correspond to the two ports of a 25 Gbps
ethernet card. The two physical ports are connected one to the other with
an optic fiber.
Now, I would like to realize the same setup but without using a physical 25
Gbps card, I wonder if this is possible.