Use Original_Dst filter in UDP Proxy Configs

[Jianyong Niu]

Hi All,

I need help on configuring envoy as a dynamic forward proxy for udp traffic.

The UDP traffic are redirected into envoy using iptable DNAT. 

Envoy supposes to forward the traffic to an upstream server, using the original destination ip/port.

Envoy v1.32.0

OS: ubuntu

Error:

[2024-11-08 14:39:12.653][104152][debug][init] [source/common/init/watcher_impl.cc:31] init manager Server destroyed
Didn't find a registered implementation for 'envoy.filters.listener.original_dst' with type URL: 'envoy.extensions.filters.listener.original_dst.v3.OriginalDst'

The following is my test config

admin:

  access_log_path: admin_access.log

  address:

    socket_address:

      address: 127.0.0.1

      protocol: TCP

      port_value: 9901

static_resources:

  listeners:

    - name: original_dst_cluster_listener

      address:

        socket_address:

          protocol: UDP

          address: 0.0.0.0

          port_value: 10005

      listener_filters:

      - name: envoy.filters.listener.original_dst

        typed_config:

            "@type": "type.googleapis.com/envoy.extensions.filters.listener.original_dst.v3.OriginalDst"

      - name: envoy.filters.udp_listener.udp_proxy

        typed_config:

            "@type": "type.googleapis.com/envoy.extensions.filters.udp.udp_proxy.v3.UdpProxyConfig"

            stat_prefix: udp_egress

            cluster: original_destination_cluster

  clusters:

  - name: original_dst_cluster

    connect_timeout: 5s

    lb_policy: CLUSTER_PROVIDED

    type: ORIGINAL_DST

    dns_lookup_family: V4_ONLY