How to bridge two VMWare vsphere "VM Network" on two different site?

I got Two sites with some ESXi 6.7. Each site has its own IP address and I would like to bridge the "VM Network" on the distant site to the local "VM Network" so I could start a VM replicate on the distant site and it will be visible on the local "VM Network" without IP address changes.

I have no dedicated switch between the two sites, I use routers and telecom provided MPLS routed links with enough throughput.

My first through was about an openvpn link with TAP drivers so I can bridge an ethernet layer on each side, but I guess there may exist better solutions.