module openconfig-routing-policy {
  yang-version 1;
  namespace "http://openconfig.net/yang/routing-policy";
  prefix oc-rpol;

  import openconfig-inet-types {
    prefix oc-inet;
  }
  import openconfig-interfaces {
    prefix oc-if;
  }
  import openconfig-policy-types {
    prefix oc-pol-types;
  }
  import openconfig-extensions {
    prefix oc-ext;
  }

  organization
    "OpenConfig working group";
  contact
    "OpenConfig working group
     netopenconfig@googlegroups.com";
  description
    "This module describes a YANG model for routing policy
     configuration. It is a limited subset of all of the policy
     configuration parameters available in the variety of vendor
     implementations, but supports widely used constructs for managing
     how routes are imported, exported, and modified across different
     routing protocols.  This module is intended to be used in
     conjunction with routing protocol configuration models (e.g.,
     BGP) defined in other modules.

     Route policy expression:

     Policies are expressed as a set of top-level policy definitions,
     each of which consists of a sequence of policy statements. Policy
     statements consist of simple condition-action tuples. Conditions
     may include mutiple match or comparison operations, and similarly
     actions may be multitude of changes to route attributes or a
     final disposition of accepting or rejecting the route.

     Route policy evaluation:

     Policy definitions are referenced in routing protocol
     configurations using import and export configuration statements.
     The arguments are members of an ordered list of named policy
     definitions which comprise a policy chain, and optionally, an
     explicit default policy action (i.e., reject or accept).

     Evaluation of each policy definition proceeds by evaluating its
     corresponding individual policy statements in order.  When a
     condition statement in a policy statement is satisfied, the
     corresponding action statement is executed.  If the action
     statement has either accept-route or reject-route actions, policy
     evaluation of the current policy definition stops, and no further
     policy definitions in the chain are evaluated.

     If the condition is not satisfied, then evaluation proceeds to
     the next policy statement.  If none of the policy statement
     conditions are satisfied, then evaluation of the current policy
     definition stops, and the next policy definition in the chain is
     evaluated.  When the end of the policy chain is reached, the
     default route disposition action is performed (i.e., reject-route
     unless an an alternate default action is specified for the
     chain).

     Policy 'subroutines' (or nested policies) are supported by
     allowing policy statement conditions to reference another policy
     definition which applies conditions and actions from the
     referenced policy before returning to the calling policy
     statement and resuming evaluation.  If the called policy
     results in an accept-route (either explicit or by default), then
     the subroutine returns an effective true value to the calling
     policy.  Similarly, a reject-route action returns false.  If the
     subroutine returns true, the calling policy continues to evaluate
     the remaining conditions (using a modified route if the
     subroutine performed any changes to the route).";

  revision 2022-05-24 {
    description
      "Remove module extension oc-ext:regexp-posix by making pattern regexes
       conform to RFC6020/7950.

       Types impacted:
       - masklength-range";
    reference
      "3.3.0";
  }
  revision 2020-08-18 {
    description
      "Fix regex anchors for masklength-range's pattern statement.";
    reference
      "3.2.2";
  }
  revision 2020-06-30 {
    description
      "Add OpenConfig POSIX pattern extensions.";
    reference
      "3.2.1";
  }
  revision 2020-04-02 {
    description
      "Add generic set-tag operation back to support local and IGP
       tagged routes.";
    reference
      "3.2.0";
  }
  revision 2018-11-21 {
    description
      "Add OpenConfig module metadata extensions.";
    reference
      "3.1.1";
  }
  revision 2018-06-05 {
    description
      "Add PIM, IGMP to INSTALL_PROTOCOL_TYPES identity";
    reference
      "3.1.0";
  }
  revision 2017-07-14 {
    description
      "Replace policy choice node/type with policy-result
       enumeration;simplified defined set naming;removed generic
       IGP actions; migrate to OpenConfig types; added mode for
       prefix sets";
    reference
      "3.0.0";
  }
  revision 2016-05-12 {
    description
      "OpenConfig public release";
    reference
      "2.0.1";
  }

  oc-ext:openconfig-version "3.3.0";
  oc-ext:catalog-organization "openconfig";
  oc-ext:origin "openconfig";

  typedef default-policy-type {
    type enumeration {
      enum "ACCEPT_ROUTE" {
        description
          "Default policy to accept the route";
      }
      enum "REJECT_ROUTE" {
        description
          "Default policy to reject the route";
      }
    }
    description
      "Type used to specify route disposition in
       a policy chain";
  }

  typedef policy-result-type {
    type enumeration {
      enum "ACCEPT_ROUTE" {
        description
          "Policy accepts the route";
      }
      enum "REJECT_ROUTE" {
        description
          "Policy rejects the route";
      }
    }
    description
      "Type used to specify route disposition in
       a policy chain";
  }

  grouping prefix-set-config {
    description
      "Configuration data for prefix sets used in policy
       definitions.";
    leaf name {
      type string;
      description
        "name / label of the prefix set -- this is used to
         reference the set in match conditions";
    }
    leaf mode {
      type enumeration {
        enum "IPV4" {
          description
            "Prefix set contains IPv4 prefixes only";
        }
        enum "IPV6" {
          description
            "Prefix set contains IPv6 prefixes only";
        }
        enum "MIXED" {
          description
            "Prefix set contains mixed IPv4 and IPv6 prefixes";
        }
      }
      description
        "Indicates the mode of the prefix set, in terms of which
         address families (IPv4, IPv6, or both) are present.  The
         mode provides a hint, but the device must validate that all
         prefixes are of the indicated type, and is expected to
         reject the configuration if there is a discrepancy.  The
         MIXED mode may not be supported on devices that require
         prefix sets to be of only one address family.";
    }
  }

  grouping prefix-set-state {
    description
      "Operational state data for prefix sets";
  }

  grouping prefix-set-top {
    description
      "Top-level data definitions for a list of IPv4 or IPv6
       prefixes which are matched as part of a policy";
    container prefix-sets {
      description
        "Enclosing container ";
      list prefix-set {
        key "name";
        description
          "List of the defined prefix sets";
        leaf name {
          type leafref {
            path "../config/name";
          }
          description
            "Reference to prefix name list key";
        }
        container config {
          description
            "Configuration data for prefix sets";
          uses prefix-set-config;
        }
        container state {
          config false;
          description
            "Operational state data ";
          uses prefix-set-config;
          uses prefix-set-state;
        }
        uses prefix-top;
      }
    }
  }

  grouping prefix-config {
    description
      "Configuration data for a prefix definition";
    leaf ip-prefix {
      type oc-inet:ip-prefix;
      mandatory true;
      description
        "The prefix member in CIDR notation -- while the
         prefix may be either IPv4 or IPv6, most
         implementations require all members of the prefix set
         to be the same address family.  Mixing address types in
         the same prefix set is likely to cause an error.";
    }
    leaf masklength-range {
      type string {
        oc-ext:posix-pattern "^(([0-9]+\\.\\.[0-9]+)|exact)$";
        pattern "(([0-9]+\\.\\.[0-9]+)|exact)";
      }
      description
        "Defines a range for the masklength, or 'exact' if
         the prefix has an exact length.

         Example: 10.3.192.0/21 through 10.3.192.0/24 would be
         expressed as prefix: 10.3.192.0/21,
         masklength-range: 21..24.

         Example: 10.3.192.0/21 would be expressed as
         prefix: 10.3.192.0/21,
         masklength-range: exact";
    }
  }

  grouping prefix-state {
    description
      "Operational state data for prefix definitions";
  }

  grouping prefix-top {
    description
      "Top-level grouping for prefixes in a prefix list";
    container prefixes {
      description
        "Enclosing container for the list of prefixes in a policy
         prefix list";
      list prefix {
        key "ip-prefix masklength-range";
        description
          "List of prefixes in the prefix set";
        leaf ip-prefix {
          type leafref {
            path "../config/ip-prefix";
          }
          description
            "Reference to the ip-prefix list key.";
        }
        leaf masklength-range {
          type leafref {
            path "../config/masklength-range";
          }
          description
            "Reference to the masklength-range list key";
        }
        container config {
          description
            "Configuration data for prefix definition";
          uses prefix-config;
        }
        container state {
          config false;
          description
            "Operational state data for prefix definition";
          uses prefix-config;
          uses prefix-state;
        }
      }
    }
  }

  grouping neighbor-set-config {
    description
      "Configuration data for neighbor set definitions";
    leaf name {
      type string;
      description
        "name / label of the neighbor set -- this is used to
         reference the set in match conditions";
    }
    leaf-list address {
      type oc-inet:ip-address;
      description
        "List of IP addresses in the neighbor set";
    }
  }

  grouping neighbor-set-state {
    description
      "Operational state data for neighbor set definitions";
  }

  grouping neighbor-set-top {
    description
      "Top-level data definition for a list of IPv4 or IPv6
       neighbors which can be matched in a routing policy";
    container neighbor-sets {
      description
        "Enclosing container for the list of neighbor set
         definitions";
      list neighbor-set {
        key "name";
        description
          "List of defined neighbor sets for use in policies.";
        leaf name {
          type leafref {
            path "../config/name";
          }
          description
            "Reference to the neighbor set name list key.";
        }
        container config {
          description
            "Configuration data for neighbor sets.";
          uses neighbor-set-config;
        }
        container state {
          config false;
          description
            "Operational state data for neighbor sets.";
          uses neighbor-set-config;
          uses neighbor-set-state;
        }
      }
    }
  }

  grouping tag-set-config {
    description
      "Configuration data for tag set definitions.";
    leaf name {
      type string;
      description
        "name / label of the tag set -- this is used to reference
         the set in match conditions";
    }
    leaf-list tag-value {
      type oc-pol-types:tag-type;
      description
        "Value of the tag set member";
    }
  }

  grouping tag-set-state {
    description
      "Operational state data for tag set definitions.";
  }

  grouping tag-set-top {
    description
      "Top-level data definitions for a list of tags which can
       be matched in policies";
    container tag-sets {
      description
        "Enclosing container for the list of tag sets.";
      list tag-set {
        key "name";
        description
          "List of tag set definitions.";
        leaf name {
          type leafref {
            path "../config/name";
          }
          description
            "Reference to the tag set name list key";
        }
        container config {
          description
            "Configuration data for tag sets";
          uses tag-set-config;
        }
        container state {
          config false;
          description
            "Operational state data for tag sets";
          uses tag-set-config;
          uses tag-set-state;
        }
      }
    }
  }

  grouping generic-defined-sets {
    description
      "Data definitions for pre-defined sets of attributes used in
       policy match conditions.  These sets are generic and can
       be used in matching conditions in different routing
       protocols.";
    uses prefix-set-top;
    uses neighbor-set-top;
    uses tag-set-top;
  }

  grouping match-set-options-group {
    description
      "Grouping containing options relating to how a particular set
       should be matched";
    leaf match-set-options {
      type oc-pol-types:match-set-options-type;
      description
        "Optional parameter that governs the behaviour of the
         match operation";
    }
  }

  grouping match-set-options-restricted-group {
    description
      "Grouping for a restricted set of match operation modifiers";
    leaf match-set-options {
      type oc-pol-types:match-set-options-restricted-type;
      description
        "Optional parameter that governs the behaviour of the
         match operation.  This leaf only supports matching on ANY
         member of the set or inverting the match.  Matching on ALL is
         not supported";
    }
  }

  grouping match-interface-condition-config {
    description
      "Configuration data for interface match condition";
    uses oc-if:interface-ref-common;
  }

  grouping match-interface-condition-state {
    description
      "Operational state data for interface match condition";
  }

  grouping match-interface-condition-top {
    description
      "Top-level grouping for the interface match condition";
    container match-interface {
      description
        "Top-level container for interface match conditions";
      container config {
        description
          "Configuration data for interface match conditions";
        uses match-interface-condition-config;
      }
      container state {
        config false;
        description
          "Operational state data for interface match conditions";
        uses match-interface-condition-config;
        uses match-interface-condition-state;
      }
    }
  }

  grouping prefix-set-condition-config {
    description
      "Configuration data for prefix-set conditions";
    leaf prefix-set {
      type leafref {
        path "../../../../../../../../defined-sets/prefix-sets/prefix-set/config/name";
      }
      description
        "References a defined prefix set";
    }
    uses match-set-options-restricted-group;
  }

  grouping prefix-set-condition-state {
    description
      "Operational state data for prefix-set conditions";
  }

  grouping prefix-set-condition-top {
    description
      "Top-level grouping for prefix-set conditions";
    container match-prefix-set {
      description
        "Match a referenced prefix-set according to the logic
         defined in the match-set-options leaf";
      container config {
        description
          "Configuration data for a prefix-set condition";
        uses prefix-set-condition-config;
      }
      container state {
        config false;
        description
          "Operational state data for a prefix-set condition";
        uses prefix-set-condition-config;
        uses prefix-set-condition-state;
      }
    }
  }

  grouping neighbor-set-condition-config {
    description
      "Configuration data for neighbor-set conditions";
    leaf neighbor-set {
      type leafref {
        path "../../../../../../../../defined-sets/neighbor-sets/neighbor-set/name";
      }
      description
        "References a defined neighbor set";
    }
    uses match-set-options-restricted-group;
  }

  grouping neighbor-set-condition-state {
    description
      "Operational state data for neighbor-set conditions";
  }

  grouping neighbor-set-condition-top {
    description
      "Top-level grouping for neighbor-set conditions";
    container match-neighbor-set {
      description
        "Match a referenced neighbor set according to the logic
         defined in the match-set-options-leaf";
      container config {
        description
          "Configuration data ";
        uses neighbor-set-condition-config;
      }
      container state {
        config false;
        description
          "Operational state data ";
        uses neighbor-set-condition-config;
        uses neighbor-set-condition-state;
      }
    }
  }

  grouping tag-set-condition-config {
    description
      "Configuration data for tag-set condition statements";
    leaf tag-set {
      type leafref {
        path "../../../../../../../../defined-sets/tag-sets/tag-set/name";
      }
      description
        "References a defined tag set";
    }
    uses match-set-options-restricted-group;
  }

  grouping tag-set-condition-state {
    description
      "Operational state data for tag-set condition statements";
  }

  grouping tag-set-condition-top {
    description
      "Top-level grouping for tag-set conditions";
    container match-tag-set {
      description
        "Match a referenced tag set according to the logic defined
         in the match-options-set leaf";
      container config {
        description
          "Configuration data for tag-set conditions";
        uses tag-set-condition-config;
      }
      container state {
        config false;
        description
          "Operational state data tag-set conditions";
        uses tag-set-condition-config;
        uses tag-set-condition-state;
      }
    }
  }

  grouping generic-conditions {
    description
      "Condition statement definitions for checking
       membership in a generic defined set";
    uses match-interface-condition-top;
    uses prefix-set-condition-top;
    uses neighbor-set-condition-top;
    uses tag-set-condition-top;
  }

  grouping generic-actions {
    description
      "Definitions for common set of policy action statements that
       manage the disposition or control flow of the policy";
    leaf policy-result {
      type policy-result-type;
      description
        "Select the final disposition for the route, either
         accept or reject.";
    }
  }

  grouping policy-conditions-config {
    description
      "Configuration data for general policy conditions, i.e., those
       not related to match-sets";
    leaf call-policy {
      type leafref {
        path "../../../../../../../oc-rpol:policy-definitions/oc-rpol:policy-definition/oc-rpol:name";
      }
      description
        "Applies the statements from the specified policy
         definition and then returns control the current
         policy statement. Note that the called policy may
         itself call other policies (subject to
         implementation limitations). This is intended to
         provide a policy 'subroutine' capability.  The
         called policy should contain an explicit or a
         default route disposition that returns an
         effective true (accept-route) or false
         (reject-route), otherwise the behavior may be
         ambiguous and implementation dependent";
    }
    leaf install-protocol-eq {
      type identityref {
        base oc-pol-types:INSTALL_PROTOCOL_TYPE;
      }
      description
        "Condition to check the protocol / method used to install
         the route into the local routing table";
    }
  }

  grouping policy-conditions-state {
    description
      "Operational state data for policy conditions";
  }

  grouping policy-conditions-top {
    description
      "Top-level grouping for policy conditions";
    container conditions {
      description
        "Condition statements for the current policy statement";
      container config {
        description
          "Configuration data for policy conditions";
        uses policy-conditions-config;
      }
      container state {
        config false;
        description
          "Operational state data for policy conditions";
        uses policy-conditions-config;
        uses policy-conditions-state;
      }
      uses generic-conditions;
    }
  }

  grouping policy-statements-config {
    description
      "Configuration data for policy statements";
    leaf name {
      type string;
      description
        "name of the policy statement";
    }
  }

  grouping policy-statements-state {
    description
      "Operational state data for policy statements";
  }

  grouping policy-actions-config {
    description
      "Configuration data for policy actions";
    uses generic-actions;
  }

  grouping policy-actions-state {
    description
      "Operational state data for policy actions";
  }

  grouping policy-actions-tag-set {
    description
      "Protocol agnostic tag specification.";
    container set-tag {
      description
        "Policy actions associated with setting tags for a particular
         route. A tag is an abstract entity which can be mapped to underlying
         protocol attributes where applicable.";
      container config {
        description
          "Configuration of tag application";
        uses action-tag-set-config;
      }
      container state {
        config false;
        description
          "Operational state related to tag application.";
        uses action-tag-set-config;
      }
      container inline {
        when "../config/mode = 'INLINE'" {
          description
            "In-line configuration is only relevant when the action's set-tag
             mode is specified explicitly to be INLINE.";
        }
        description
          "The tags specified in this container are set on a route using
           the values directly. It is applicable when the mode of application
           is explicitly specified as INLINE.";
        container config {
          description
            "Configuration values related to in-line tag specification.";
          uses action-tag-set-inline-config;
        }
        container state {
          config false;
          description
            "Operational state related to in-line tag specification.";
          uses action-tag-set-inline-config;
        }
      }
      container reference {
        when "../config/mode = 'REFERENCE'" {
          description
            "Reference configuration is only relevant when the action's set-tag
             mode is specified explicitly to be REFERENCE.";
        }
        description
          "This container is applicable when the mode of application is explicitly
           specified to as REFERENCE. The tags set on a route are those that are
           specified within the tag-set";
        container config {
          description
            "Configuration values related to specifying a tag-set to be applied to
             a route.";
          uses action-tag-set-reference-config;
        }
        container state {
          config false;
          description
            "Operational state related to specifying a tag-set to be applied to a
             route.";
          uses action-tag-set-reference-config;
        }
      }
    }
  }

  grouping action-tag-set-config {
    description
      "Configuration leaves for setting a tag applicable to both inline and
       reference modes.";
    leaf mode {
      type enumeration {
        enum "INLINE" {
          description
            "Use an in-line specified list of tags";
        }
        enum "REFERENCE" {
          description
            "Use a reference to a defined tag-set.";
        }
      }
      description
        "This leaf controls the source of the tags that are set as a result
         of the action. In the case that the INLINE value is specified, the
         list of tags specified within the action is applied to matching prefixes.
         In the case that the REFERENCE value is specified, a pre-defined set of
         tags is utilised.";
    }
  }

  grouping action-tag-set-inline-config {
    description
      "Configuration leaves for setting a tag within an action using an in-line
       specified set of tags.";
    leaf-list tag {
      type oc-pol-types:tag-type;
      description
        "Set one or more tags for prefixes that match the specified condition(s)
         using the specified tag values. When a tag is set it MUST be possible to
         match the value set in subsequent policies on the local device. Where the
         protocol that is carrying the prefix has a tag field (OSPF, and IS-IS in
         particular) the tag MUST be set in the corresponding protocol advertisements
         of the prefix.";
    }
  }

  grouping action-tag-set-reference-config {
    description
      "Configuration leaves for setting a tag within an action using a set of
       tags that is specified in a defined-set.";
    leaf tag-set {
      type leafref {
        path "../../../../../../../../../defined-sets/tag-sets/tag-set/config/name";
      }
      description
        "Use the referenced tag-set to set tags on the prefixes that match the
         specified conditions. When a tag is set it MUST be possible to match the
         value set in subsequent policies on the local device. where the protocol that
         is carrying the prefix has a tag field (OSPF, and IS-IS for in particular)
         the tag MUST be set in the corresponding protocol advertisements of the
         prefix.";
    }
  }

  grouping policy-actions-top {
    description
      "Top-level grouping for policy actions";
    container actions {
      description
        "Top-level container for policy action statements";
      container config {
        description
          "Configuration data for policy actions";
        uses policy-actions-config;
      }
      container state {
        config false;
        description
          "Operational state data for policy actions";
        uses policy-actions-config;
        uses policy-actions-state;
      }
      uses policy-actions-tag-set;
    }
  }

  grouping policy-statements-top {
    description
      "Top-level grouping for the policy statements list";
    container statements {
      description
        "Enclosing container for policy statements";
      list statement {
        key "name";
        ordered-by user;
        description
          "Policy statements group conditions and actions
           within a policy definition.  They are evaluated in
           the order specified (see the description of policy
           evaluation at the top of this module.";
        leaf name {
          type leafref {
            path "../config/name";
          }
          description
            "Reference to list key";
        }
        container config {
          description
            "Configuration data for policy statements";
          uses policy-statements-config;
        }
        container state {
          config false;
          description
            "Operational state data for policy statements";
          uses policy-statements-config;
          uses policy-statements-state;
        }
        uses policy-conditions-top;
        uses policy-actions-top;
      }
    }
  }

  grouping defined-sets-top {
    description
      "Top-level grouping for defined set definitions";
    container defined-sets {
      description
        "Predefined sets of attributes used in policy match
         statements";
      uses generic-defined-sets;
    }
  }

  grouping policy-definitions-config {
    description
      "Configuration data for policy definitions";
    leaf name {
      type string;
      description
        "Name of the top-level policy definition -- this name
         is used in references to the current policy";
    }
  }

  grouping policy-definitions-state {
    description
      "Operational state data for policy definitions";
  }

  grouping policy-definitions-top {
    description
      "Top-level grouping for the policy definition list";
    container policy-definitions {
      description
        "Enclosing container for the list of top-level policy
          definitions";
      list policy-definition {
        key "name";
        description
          "List of top-level policy definitions, keyed by unique
           name.  These policy definitions are expected to be
           referenced (by name) in policy chains specified in import
           or export configuration statements.";
        leaf name {
          type leafref {
            path "../config/name";
          }
          description
            "Reference to the list key";
        }
        container config {
          description
            "Configuration data for policy defintions";
          uses policy-definitions-config;
        }
        container state {
          config false;
          description
            "Operational state data for policy definitions";
          uses policy-definitions-config;
          uses policy-definitions-state;
        }
        uses policy-statements-top;
      }
    }
  }

  grouping routing-policy-top {
    description
      "Top level container for OpenConfig routing policy";
    container routing-policy {
      description
        "Top-level container for all routing policy configuration";
      uses defined-sets-top;
      uses policy-definitions-top;
    }
  }

  grouping apply-policy-import-config {
    description
      "Configuration data for applying import policies";
    leaf-list import-policy {
      type leafref {
        path "/oc-rpol:routing-policy/oc-rpol:policy-definitions/oc-rpol:policy-definition/oc-rpol:name";
      }
      ordered-by user;
      description
        "list of policy names in sequence to be applied on
         receiving a routing update in the current context, e.g.,
         for the current peer group, neighbor, address family,
         etc.";
    }
    leaf default-import-policy {
      type default-policy-type;
      default "REJECT_ROUTE";
      description
        "explicitly set a default policy if no policy definition
         in the import policy chain is satisfied.";
    }
  }

  grouping apply-policy-export-config {
    description
      "Configuration data for applying export policies";
    leaf-list export-policy {
      type leafref {
        path "/oc-rpol:routing-policy/oc-rpol:policy-definitions/oc-rpol:policy-definition/oc-rpol:name";
      }
      ordered-by user;
      description
        "list of policy names in sequence to be applied on
         sending a routing update in the current context, e.g.,
         for the current peer group, neighbor, address family,
         etc.";
    }
    leaf default-export-policy {
      type default-policy-type;
      default "REJECT_ROUTE";
      description
        "explicitly set a default policy if no policy definition
         in the export policy chain is satisfied.";
    }
  }

  grouping apply-policy-config {
    description
      "Configuration data for routing policies";
    uses apply-policy-import-config;
    uses apply-policy-export-config;
  }

  grouping apply-policy-state {
    description
      "Operational state associated with routing policy";
  }

  grouping apply-policy-group {
    description
      "Top level container for routing policy applications. This
       grouping is intended to be used in routing models where
       needed.";
    container apply-policy {
      description
        "Anchor point for routing policies in the model.
         Import and export policies are with respect to the local
         routing table, i.e., export (send) and import (receive),
         depending on the context.";
      container config {
        description
          "Policy configuration data.";
        uses apply-policy-config;
      }
      container state {
        config false;
        description
          "Operational state for routing policy";
        uses apply-policy-config;
        uses apply-policy-state;
      }
    }
  }

  uses routing-policy-top;
}