L2TP for Subscriber Access

Has anyone implemented VyOS to function as a L2TP Access Concentrator forwarding PPPoE requests based on auth domain to remote LNSs? We need to split PPPoE requests received over a single tunnel interface so that some can authenticate on our local LNS and some can be forwarded to a remote LNS. I know it can be done easily by Cisco or Juniper kit but I haven’t found a good alternative.