Envoy config using original source listener

envoy-postgres.yaml

static_resources:
  listeners:
  - name: postgres_listener
    address:
      socket_address:
        address: 0.0.0.0
        port_value: 5432
    listener_filters:
    - name: envoy.filters.listener.original_src
      typed_config:
        "@type": type.googleapis.com/envoy.extensions.filters.listener.original_src.v3.OriginalSrc
        mark: 123
    filter_chains:
    - filters:
      - name: envoy.filters.network.postgres_proxy
        typed_config:
          "@type": type.googleapis.com/envoy.extensions.filters.network.postgres_proxy.v3alpha.PostgresProxy
          stat_prefix: egress_postgres
      - name: envoy.filters.network.tcp_proxy
        typed_config:
          "@type": type.googleapis.com/envoy.extensions.filters.network.tcp_proxy.v3.TcpProxy
          stat_prefix: postgres_tcp
          cluster: postgres_cluster

  clusters:
  - name: postgres_cluster
    connect_timeout: 1s
    type: strict_dns
    load_assignment:
      cluster_name: postgres_cluster
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: pgbouncer
                port_value: 6432

admin: 
  access_log_path: "/dev/null" 
  address: 
    socket_address: 
      address: 0.0.0.0 
      port_value: 8001