RFC 9665
Service Registration Protocol for DNS-Based Service Discovery, June 2025
- File formats:

- Also available: XML file for editing
- Status:
- PROPOSED STANDARD
- Authors:
- T. Lemon
S. Cheshire - Stream:
- IETF
- Source:
- dnssd (int)
Cite this RFC: TXT | XML | BibTeX
DOI: https://doi.org/10.17487/RFC9665
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Abstract
The Service Registration Protocol (SRP) for DNS-based Service Discovery (DNS-SD) uses the standard DNS Update mechanism to enable DNS-SD using only unicast packets. This makes it possible to deploy DNS-SD without multicast, which greatly improves scalability and improves performance on networks where multicast service is not an optimal choice, particularly IEEE 802.11 (Wi-Fi) and IEEE 802.15.4 networks. DNS-SD Service registration uses public keys and SIG(0) to allow services to defend their registrations.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.