client

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... software not only at the authoritative DNS server that is providing the new information and the client making use of it, but also at all slave servers for the zone containing it, and in some cases also at caching name servers and forwarders used by the client ...

... client making use of it, but also at all slave servers for the zone containing it, and in some cases also at caching name servers and forwarders used by the client. Because the deployment ...