Original source IP for UDP protocol

[marcin54321]

Description:
I need to configure Envoy UDP listeners which prereserve original source IP address of a client.

Repro steps:
Use the following config:

  access_log_path: /var/log/admin_access.log
static_resources:
  listeners:
  - name: listener_172.16.0.26_80_v4
    address:
      socket_address: { address: 172.16.0.26, port_value: 80, protocol: UDP }
    reuse_port: true
    listener_filters:
    - name: envoy.filters.listener.original_src
      typed_config:
        "@type": type.googleapis.com/envoy.extensions.filters.listener.original_src.v3.OriginalSrc
        mark: 1
    - name: envoy.filters.udp_listener.udp_proxy
      typed_config:
        "@type": type.googleapis.com/envoy.config.filter.udp.udp_proxy.v2alpha.UdpProxyConfig
        stat_prefix: ingress_udp
        cluster: local_service_80
  - name: listener_172.16.0.25_80_v4
    address:
      socket_address: { address: 172.16.0.25, port_value: 80, protocol: UDP }
    reuse_port: true
    listener_filters:
    - name: envoy.filters.udp_listener.udp_proxy
      typed_config:
        "@type": type.googleapis.com/envoy.config.filter.udp.udp_proxy.v2alpha.UdpProxyConfig
        stat_prefix: ingress_udp
        cluster: local_service_80
  clusters:
  - name: local_service_80
    connect_timeout: 0.25s
    type: STATIC
    dns_lookup_family: V4_ONLY
    lb_policy: MAGLEV
    load_assignment:
      cluster_name: local_service_80
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address: { address: 10.101.10.15, port_value: 80 }
        - endpoint:
            address:
              socket_address: { address: 10.101.10.16, port_value: 80 }

Logs:

[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:295] initializing epoch 0 (base id=0, hot restart version=11.104)
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:297] statically linked extensions:
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.access_loggers: envoy.access_loggers.file, envoy.access_loggers.http_grpc, envoy.access_loggers.tcp_grpc, envoy.file_access_log, envoy.http_grpc_access_log, envoy.tcp_grpc_access_log
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   http_cache_factory: envoy.extensions.http.cache.simple
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.upstreams: envoy.filters.connection_pools.http.generic, envoy.filters.connection_pools.http.http, envoy.filters.connection_pools.http.tcp
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.dubbo_proxy.route_matchers: default
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.resolvers: envoy.ip
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.thrift_proxy.protocols: auto, binary, binary/non-strict, compact, twitter
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.udp_listeners: raw_udp_listener
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.filters.http: envoy.buffer, envoy.cors, envoy.csrf, envoy.ext_authz, envoy.fault, envoy.filters.http.adaptive_concurrency, envoy.filters.http.admission_control, envoy.filters.http.aws_lambda, envoy.filters.http.aws_request_signing, envoy.filters.http.buffer, envoy.filters.http.cache, envoy.filters.http.compressor, envoy.filters.http.cors, envoy.filters.http.csrf, envoy.filters.http.decompressor, envoy.filters.http.dynamic_forward_proxy, envoy.filters.http.dynamo, envoy.filters.http.ext_authz, envoy.filters.http.fault, envoy.filters.http.grpc_http1_bridge, envoy.filters.http.grpc_http1_reverse_bridge, envoy.filters.http.grpc_json_transcoder, envoy.filters.http.grpc_stats, envoy.filters.http.grpc_web, envoy.filters.http.gzip, envoy.filters.http.header_to_metadata, envoy.filters.http.health_check, envoy.filters.http.ip_tagging, envoy.filters.http.jwt_authn, envoy.filters.http.lua, envoy.filters.http.on_demand, envoy.filters.http.original_src, envoy.filters.http.ratelimit, envoy.filters.http.rbac, envoy.filters.http.router, envoy.filters.http.squash, envoy.filters.http.tap, envoy.grpc_http1_bridge, envoy.grpc_json_transcoder, envoy.grpc_web, envoy.gzip, envoy.health_check, envoy.http_dynamo_filter, envoy.ip_tagging, envoy.lua, envoy.rate_limit, envoy.router, envoy.squash
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.filters.udp_listener: envoy.filters.udp.dns_filter, envoy.filters.udp_listener.udp_proxy
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.dubbo_proxy.serializers: dubbo.hessian2
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.dubbo_proxy.filters: envoy.filters.dubbo.router
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.transport_sockets.upstream: envoy.transport_sockets.alts, envoy.transport_sockets.quic, envoy.transport_sockets.raw_buffer, envoy.transport_sockets.tap, envoy.transport_sockets.tls, raw_buffer, tls
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.retry_host_predicates: envoy.retry_host_predicates.omit_canary_hosts, envoy.retry_host_predicates.omit_host_metadata, envoy.retry_host_predicates.previous_hosts
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.health_checkers: envoy.health_checkers.redis
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.transport_sockets.downstream: envoy.transport_sockets.alts, envoy.transport_sockets.quic, envoy.transport_sockets.raw_buffer, envoy.transport_sockets.tap, envoy.transport_sockets.tls, raw_buffer, tls
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.clusters: envoy.cluster.eds, envoy.cluster.logical_dns, envoy.cluster.original_dst, envoy.cluster.static, envoy.cluster.strict_dns, envoy.clusters.aggregate, envoy.clusters.dynamic_forward_proxy, envoy.clusters.redis
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.tracers: envoy.dynamic.ot, envoy.lightstep, envoy.tracers.datadog, envoy.tracers.dynamic_ot, envoy.tracers.lightstep, envoy.tracers.opencensus, envoy.tracers.xray, envoy.tracers.zipkin, envoy.zipkin
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.internal_redirect_predicates: envoy.internal_redirect_predicates.allow_listed_routes, envoy.internal_redirect_predicates.previous_routes, envoy.internal_redirect_predicates.safe_cross_scheme
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.stats_sinks: envoy.dog_statsd, envoy.metrics_service, envoy.stat_sinks.dog_statsd, envoy.stat_sinks.hystrix, envoy.stat_sinks.metrics_service, envoy.stat_sinks.statsd, envoy.statsd
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.thrift_proxy.filters: envoy.filters.thrift.rate_limit, envoy.filters.thrift.router
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.filters.listener: envoy.filters.listener.http_inspector, envoy.filters.listener.original_dst, envoy.filters.listener.original_src, envoy.filters.listener.proxy_protocol, envoy.filters.listener.tls_inspector, envoy.listener.http_inspector, envoy.listener.original_dst, envoy.listener.original_src, envoy.listener.proxy_protocol, envoy.listener.tls_inspector
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.dubbo_proxy.protocols: dubbo
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.retry_priorities: envoy.retry_priorities.previous_priorities
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.compression.decompressor: envoy.compression.gzip.decompressor
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.resource_monitors: envoy.resource_monitors.fixed_heap, envoy.resource_monitors.injected_resource
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.compression.compressor: envoy.compression.gzip.compressor
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.grpc_credentials: envoy.grpc_credentials.aws_iam, envoy.grpc_credentials.default, envoy.grpc_credentials.file_based_metadata
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.thrift_proxy.transports: auto, framed, header, unframed
[2020-07-24 14:21:13.066][63][info][main] [source/server/server.cc:299]   envoy.filters.network: envoy.client_ssl_auth, envoy.echo, envoy.ext_authz, envoy.filters.network.client_ssl_auth, envoy.filters.network.direct_response, envoy.filters.network.dubbo_proxy, envoy.filters.network.echo, envoy.filters.network.ext_authz, envoy.filters.network.http_connection_manager, envoy.filters.network.kafka_broker, envoy.filters.network.local_ratelimit, envoy.filters.network.mongo_proxy, envoy.filters.network.mysql_proxy, envoy.filters.network.postgres_proxy, envoy.filters.network.ratelimit, envoy.filters.network.rbac, envoy.filters.network.redis_proxy, envoy.filters.network.rocketmq_proxy, envoy.filters.network.sni_cluster, envoy.filters.network.sni_dynamic_forward_proxy, envoy.filters.network.tcp_proxy, envoy.filters.network.thrift_proxy, envoy.filters.network.zookeeper_proxy, envoy.http_connection_manager, envoy.mongo_proxy, envoy.ratelimit, envoy.redis_proxy, envoy.tcp_proxy
[2020-07-24 14:21:13.073][63][info][main] [source/server/server.cc:315] HTTP header map info:
[2020-07-24 14:21:13.075][63][info][main] [source/server/server.cc:318]   request header map: 496 bytes: :authority,:method,:path,:protocol,:scheme,accept,accept-encoding,access-control-request-method,authorization,cache-control,connection,content-encoding,content-length,content-type,expect,grpc-accept-encoding,grpc-timeout,keep-alive,origin,proxy-connection,referer,te,transfer-encoding,upgrade,user-agent,via,x-client-trace-id,x-envoy-attempt-count,x-envoy-decorator-operation,x-envoy-downstream-service-cluster,x-envoy-downstream-service-node,x-envoy-expected-rq-timeout-ms,x-envoy-external-address,x-envoy-force-trace,x-envoy-hedge-on-per-try-timeout,x-envoy-internal,x-envoy-ip-tags,x-envoy-max-retries,x-envoy-original-path,x-envoy-original-url,x-envoy-retriable-header-names,x-envoy-retriable-status-codes,x-envoy-retry-grpc-on,x-envoy-retry-on,x-envoy-upstream-alt-stat-name,x-envoy-upstream-rq-per-try-timeout-ms,x-envoy-upstream-rq-timeout-alt-response,x-envoy-upstream-rq-timeout-ms,x-forwarded-client-cert,x-forwarded-for,x-forwarded-proto,x-ot-span-context,x-request-id
[2020-07-24 14:21:13.075][63][info][main] [source/server/server.cc:318]   request trailer map: 72 bytes:
[2020-07-24 14:21:13.075][63][info][main] [source/server/server.cc:318]   response header map: 352 bytes: :status,access-control-allow-credentials,access-control-allow-headers,access-control-allow-methods,access-control-allow-origin,access-control-expose-headers,access-control-max-age,cache-control,connection,content-encoding,content-length,content-type,date,etag,grpc-message,grpc-status,keep-alive,location,proxy-connection,referer,server,transfer-encoding,upgrade,vary,via,x-envoy-attempt-count,x-envoy-decorator-operation,x-envoy-degraded,x-envoy-immediate-health-check-fail,x-envoy-ratelimited,x-envoy-upstream-canary,x-envoy-upstream-healthchecked-cluster,x-envoy-upstream-service-time,x-request-id
[2020-07-24 14:21:13.075][63][info][main] [source/server/server.cc:318]   response trailer map: 96 bytes: grpc-message,grpc-status
[2020-07-24 14:21:13.077][63][warning][main] [source/server/server.cc:395] No admin address given, so no admin HTTP server started.
[2020-07-24 14:21:13.077][63][info][main] [source/server/server.cc:555] runtime: layers:
  - name: base
    static_layer:
      {}
  - name: admin
    admin_layer:
      {}
[2020-07-24 14:21:13.077][63][info][config] [source/server/configuration_impl.cc:103] loading tracing configuration
[2020-07-24 14:21:13.077][63][info][config] [source/server/configuration_impl.cc:69] loading 0 static secret(s)
[2020-07-24 14:21:13.077][63][info][config] [source/server/configuration_impl.cc:75] loading 1 cluster(s)
[2020-07-24 14:21:13.083][63][info][config] [source/server/configuration_impl.cc:79] loading 2 listener(s)
[2020-07-24 14:21:13.083][63][critical][main] [source/server/server.cc:101] error initializing configuration '/tmp/envoy.yaml': error adding listener '172.16.0.26:80': Only 1 UDP listener filter per listener supported
[2020-07-24 14:21:13.084][63][info][main] [source/server/server.cc:704] exiting
error adding listener '172.16.0.26:80': Only 1 UDP listener filter per listener supported