Client controlled domain name service (DNS) resolution
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United States of America Patent
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Jul 11, 2023
Grant Date -
N/A
app pub date -
Apr 1, 2021
filing date -
Aug 31, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
In one embodiment, a domain name system (DNS) server processes a DNS query based on a policy statement that is attached to the DNS query. Upon receiving the DNS query, the DNS server executes one or more commands specified in the policy statement to generate a query state. The query state controls DNS resolution behavior that the DNS server implements as part of processing the DNS query. The DNS server then performs one or more DNS resolution operations based on DNS query and the query state to generate a response. Advantageously, because the semantics of the policy statement are encapsulated within the policy statement, the policy statement enables a client to unambiguously control DNS resolution behavior. By contrast, conventional DNS resolution guidance mechanisms that rely on DNS servers to infer policies based on client data may not reflect the preferences of the clients.
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