DNSSEC and IPv6 A6 aware server/resolver message size requirements, December 2001
- File formats:
- PROPOSED STANDARD
- RFC 2535, RFC 2874
- Updated by:
- RFC 4033, RFC 4034, RFC 4035
- O. Gudmundsson
- dnsext (int)
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This document mandates support for EDNS0 (Extension Mechanisms for DNS) in DNS entities claiming to support either DNS Security Extensions or A6 records. This requirement is necessary because these new features increase the size of DNS messages. If EDNS0 is not supported fall back to TCP will happen, having a detrimental impact on query latency and DNS server load. This document updates RFC 2535 and RFC 2874, by adding new requirements. [STANDARDS-TRACK]
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.