import std/[options, times]

type
  Type* = enum
    v4, v6
  Lease* = object
    expiry*       : DateTime
    address*      : string
    hostname*     : Option[string]
    clientId*     : Option[string]
    case `type`*  : Type
    of v4:
      macAddress* : string
    of v6:
      iaid*       : string