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RFC 2308:Negative Caching of DNS Queries (DNS NCAC...

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Negative Caching of DNS Queries (DNS NCACHE)

2. Negative Responses

2.1. Name Error

2.1.1. Special Handling of Name Error

2.2.1. Special Handling of No Data

3. Negative Answers from Authoritative Servers

4. SOA Minimum Field

5. Caching Negative Answers

6. Negative answers from the cache

7. Other Negative Responses

7.1. Server Failure (OPTIONAL)

7.2. Dead / Unreachable Server (OPTIONAL)

8. Changes from RFC 1034

9. History of Negative Caching

11. Security Considerations

12. Acknowledgments

14. Author's Address

15. Full Copyright Statement

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