The DhcpReservationV6 complex type is the extension of the DhcpReservation complex type. This specifies the properties associated with a IPv6 reservation.

 <xs:complexType name="DhcpReservationV6">
   <xs:complexContent mixed="false">
     <xs:extension base="ipam:DhcpReservation">
         <xs:element minOccurs="0" name="Duid" nillable="true" type="xsd:string" />
         <xs:element minOccurs="0" name="Iaid" type="xsd:unsignedInt" />

Duid: This specifies the DHCP Unique Identifier (DUID) that is used by a client, as a unique identifier of that client, to get an IP address from the DHCPv6 server.

Iaid: This specifies the Interface Association Identifier (IAID) that is used to uniquely identify an IPv6 interface in a client. Each allocation in a DHCPv6 server is identified by a DUID and IAID.