A response to a Domain Name System query can be protected with authentication information to be used by a host that originated the query. By way of example, a technique for use in indicating a dialogue turn in an automated speech-to-speech translation system comprises the following stepsoperations. For each data field protected by a black-box lease, a client has a two-value data structure: SelfValue represents the client’s intended use of the data field, and OtherValue is an aggregation of the other clients’ intended uses of that data field. A configurator of the first device may load into memory a command from a target configuration file, the command having a first identifying attribute.