submodule Cisco-IOS-XR-ipv6-new-dhcpv6d-oper-sub1 {

    yang-version 1;

    belongs-to
      Cisco-IOS-XR-ipv6-new-dhcpv6d-oper {
        prefix
          Cisco-IOS-XR-ipv6-new-dhcpv6d-oper;
    }

    import ietf-inet-types {
      prefix inet;
    }
    import ietf-yang-types {
      prefix yang;
    }
    import Cisco-IOS-XR-types {
      prefix xr;
    }
    import cisco-semver {
      prefix semver;
    }

    organization "Cisco Systems, Inc.";

    contact
      "Cisco Systems, Inc.
     Customer Service
     
     Postal: 170 West Tasman Drive
     San Jose, CA 95134
     
     Tel: +1 800 553-NETS
     
     E-mail: cs-yang@cisco.com";

    description
      "This submodule contains a collection of YANG definitions
     for Cisco IOS-XR ipv6-new-dhcpv6d package operational data.
     
     Copyright (c) 2013-2021 by Cisco Systems, Inc.
     All rights reserved.";

    revision "2021-03-19" {
      description
        "Added support for dynamic relay MAC address handling.
       2020-12-20
         Added Yang Support for ADT,to retrive statistcs with help of vrf/interface.
       2020-09-30
         Modified to accommodate cdm changes
       2020-09-29
         Added support to track server that allocated IP for DHCPv6 relay client.";
    }

    revision "2019-12-18" {
      description "Added IPv6 ND support";
    }

    revision "2019-04-05" {
      description
        "Establish semantic version baseline.";
    }

    revision "2018-10-09" {
      description
        "Added dhcpv6 server disconnect-history class";
    }

    revision "2018-09-17" {
      description
        "Added dhcpv6 proxy disconnect-history class";
    }

    revision "2017-12-06" {
      description
        "Added proxy class and server class oper for class and server profile";
    }

    revision "2015-11-09" {
      description "IOS XR 6.0 revision.";
    }

    semver:module-version "2.1.0";
    semver:module-version "2.0.0";
    semver:module-version "2.0.0";

    typedef Bag-dhcpv6d-fsm-state {
      type enumeration {
        enum "server-initializing" {
          value 0;
          description
            "Server initializing state for client binding";
        }
        enum "server-waiting-dpm" {
          value 1;
          description
            "Server waiting on DPM to validate subscriber";
        }
        enum "server-waiting-daps" {
          value 2;
          description
            "Server waiting on DAPS to assign/free
           addr/prefix";
        }
        enum "server-waiting-client" {
          value 3;
          description
            "Server waiting for a request from the client";
        }
        enum "server-waiting-subscriber" {
          value 4;
          description
            "Server waiting for iedge response for the
           session";
        }
        enum "server-waiting-rib" {
          value 5;
          description
            "Server waiting for RIB response for route add";
        }
        enum "server-bound-client" {
          value 6;
          description
            "Server bound state to the client";
        }
        enum "proxy-initializing" {
          value 10;
          description
            "Proxy initializing state for client binding";
        }
        enum "proxy-waiting-dpm" {
          value 11;
          description
            "Proxy waiting on DPM to validate subscriber";
        }
        enum "proxy-waiting-daps" {
          value 12;
          description
            "Proxy waiting on DAPS to assign/free prefix(ND)";
        }
        enum "proxy-waiting-client-server" {
          value 13;
          description
            "Proxy waiting for a msg from the client/srv";
        }
        enum "proxy-waiting-subscriber" {
          value 14;
          description
            "Proxy waiting on iedge to sub session resp";
        }
        enum "proxy-waiting-rib" {
          value 15;
          description
            "Proxy waiting on RIB response";
        }
        enum "proxy-bound-client" {
          value 16;
          description
            "Proxy bound state to the client";
        }
      }
      description "Bag dhcpv6d fsm state";
    }

    typedef Bag-dhcpv6d-ia-id {
      type enumeration {
        enum "iana" {
          value 0;
          description
            "Non-temporary Addresses assigned ";
        }
        enum "iapd" {
          value 1;
          description
            "Prefix delegeated to client      ";
        }
        enum "iata" {
          value 2;
          description
            "Temporary Addresses - not supported ";
        }
      }
      description "Bag dhcpv6d ia id";
    }

    typedef Bag-dhcpv6d-intf-serg-role {
      type enumeration {
        enum "none" {
          value 0;
          description
            "DHCPv6 Interface SERG role NONE";
        }
        enum "master" {
          value 1;
          description
            "DHCPv6 Interface SERG role Master";
        }
        enum "slave" {
          value 2;
          description
            "DHCPv6 Interface SERG role Slave";
        }
      }
      description
        "Bag dhcpv6d intf serg role";
    }

    typedef Bag-dhcpv6d-intf-srg-role {
      type enumeration {
        enum "none" {
          value 0;
          description
            "DHCPv6 Interface SRG role NONE";
        }
        enum "master" {
          value 1;
          description
            "DHCPv6 Interface SRG role Master";
        }
        enum "slave" {
          value 2;
          description
            "DHCPv6 Interface SRG role Slave";
        }
      }
      description
        "Bag dhcpv6d intf srg role";
    }

    typedef Lease-limit {
      type enumeration {
        enum "none" {
          value 0;
          description
            "Lease limit type none";
        }
        enum "interface" {
          value 1;
          description
            "Lease limit type interface";
        }
        enum "circuit-id" {
          value 2;
          description
            "Lease limit type circuit ID";
        }
        enum "remote-id" {
          value 3;
          description
            "Lease limit type remote ID";
        }
      }
      description "Profile lease limit type";
    }

    typedef Bag-dhcpv6d-sub-mode {
      type enumeration {
        enum "base" {
          value 0;
          description "DHCPv6 Base mode";
        }
        enum "server" {
          value 1;
          description "DHCPv6 Server mode";
        }
        enum "proxy" {
          value 2;
          description "DHCPv6 Proxy mode";
        }
      }
      description "Bag dhcpv6d sub mode";
    }

    typedef String-ifname {
      type string {
        length "0..65";
      }
      description "String ifname";
    }

    typedef String-vrf {
      type string {
        length "0..33";
      }
      description "String vrf";
    }

    typedef Ipv6-address {
      type inet:ipv6-address;
      description "IPV6 Address type";
    }

    typedef Dhcpv6-issu-version {
      type enumeration {
        enum "version1" {
          value 1;
          description "Version 1";
        }
        enum "version2" {
          value 2;
          description "Version 2";
        }
      }
      description "Dhcpv6 issu version";
    }

    typedef Dhcp-issu-phase {
      type enumeration {
        enum "phase-not-started" {
          value 0;
          description
            "An ISSU event has not started";
        }
        enum "phase-load" {
          value 1;
          description "ISSU Load Phase";
        }
        enum "phase-run" {
          value 2;
          description "ISSU Run Phase";
        }
        enum "phase-completed" {
          value 3;
          description
            "An ISSU event has completed successfully";
        }
        enum "phase-aborted" {
          value 4;
          description
            "An ISSU event has aborted";
        }
      }
      description "Dhcp issu phase";
    }

    typedef Dhcpv6-issu-role {
      type enumeration {
        enum "role-primary" {
          value 0;
          description "Primary role";
        }
        enum "role-secondary" {
          value 1;
          description "Secondary role";
        }
      }
      description "Dhcpv6 issu role";
    }
  }  // submodule Cisco-IOS-XR-ipv6-new-dhcpv6d-oper-sub1