IntraVlan Guest Communication

Hi everyone,

I am using two interfaces with two bridges for guests and thier VLANs and a separate interface and bridge for management. The guest bridge (vmbr1), is not routing traffic in the same VLAN through proxmox. Instead, the traffic goes to the router and then back to proxmox. How do I make sure when there is intra-VLAN traffic, it is routed through proxmox, and not the physical network?

Ideally, proxmox would function as a managed layer 2 switch. In this scenario, guests on the same VLAN would be routed internally, through proxmox.