module huawei-ipv6-policy {

    yang-version 1;

    namespace
      "urn:huawei:yang:huawei-ipv6-policy";

    prefix ipv6-policy;

    import ietf-inet-types {
      prefix inet;
    }
    import huawei-network-instance {
      prefix ni;
    }
    import huawei-extension {
      prefix ext;
    }
    import huawei-l3vpn {
      prefix l3vpn;
    }

    organization
      "Huawei Technologies Co., Ltd.";

    contact
      "Huawei Industrial Base
     Bantian, Longgang
     Shenzhen 518129
     People's Republic of China
     Website: http://www.huawei.com
     Email: support@huawei.com";

    description
      "This module contains a collection of YANG definitions for
     configuring IP implementations.
     Copyright (C) 2019 Huawei Technologies Co., Ltd. All rights reserved.";

    revision "2020-02-14" {
      description
        "Modify the description of nodes.";
      reference
        "Huawei private.";

    }

    revision "2019-04-15" {
      description "Reinitialize revision.";
      reference
        "Huawei private.";

    }

    revision "2019-04-10" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "interface-mgr";

    augment /ni:network-instance/ni:instances/ni:instance {
      when
        "./l3vpn:afs/l3vpn:af[l3vpn:type='ipv6-unicast']";
      description
        "Policies for selecting source and destination IPv6 addresses and parameters for configuring IP on interfaces.";
      container ipv6-policys {
        description
          "List of policies for selecting source and destination IPv6 addresses.";
        list ipv6-policy {
          key "ipv6-prefix ipv6-prefix-length";
          max-elements 50;
          description
            "Configure policy for selecting source and destination IPv6 addresses.";
          leaf ipv6-prefix {
            type inet:ipv6-address-no-zone;
            description
              "Specifies the prefix of an IPv6 address.";
          }

          leaf ipv6-prefix-length {
            type uint32 {
              range "0..128";
            }
            description
              "Specifies the prefix length of an IPv6 address.";
          }

          leaf prefix-precedence {
            type uint32 {
              range "0..4294967295";
            }
            mandatory true;
            description
              "Specifies the priority of an IPv6 address when the address is the destination address.";
          }

          leaf prefix-label {
            type uint32 {
              range "0..4294967295";
            }
            mandatory true;
            description
              "Specifies the priority of an IPv6 address when the address is the source address.";
          }

          leaf default-flag {
            type boolean;
            default "false";
            config false;
            description
              "Specifies whether the configuration is an default configuration.";
          }
        }  // list ipv6-policy
      }  // container ipv6-policys
    }
  }  // module huawei-ipv6-policy