submodule huawei-dhcp-relay {

    yang-version 1;

    belongs-to huawei-dhcp {
        prefix dhcp;
    }

    import huawei-ifm {
      prefix ifm;
    }
    import ietf-inet-types {
      prefix inet;
    }
    import huawei-network-instance {
      prefix ni;
    }
    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 managing DHCP relay.";

    revision "2020-03-15" {
      description "Modify description.";
      reference
        "Huawei private.";

    }

    revision "2020-02-25" {
      description
        "Add the node of link-selection-address.";
      reference
        "Huawei private.";

    }

    revision "2019-12-25" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }


    typedef dhcp-relay-reply-type {
      type enumeration {
        enum "broadcast-always" {
          value 1;
          description
            "Always broadcast the reply.";
        }
      }
      description "The type of relay reply.";
    }

    typedef dhcp-opt82-sub6-format {
      type enumeration {
        enum "self-define" {
          value 1;
          description
            "DHCP option82 self-define format.";
        }
      }
      description
        "The type of DHCP option82 suboption6 format.";
    }

    typedef dhcp-opt82-vendor-sub-option-format {
      type enumeration {
        enum "source-ip-address" {
          value 0;
          description "Source IP address.";
        }
      }
      description
        "The type of DHCP option82 vendor suboption format.";
    }
  }  // submodule huawei-dhcp-relay