DNS Push Notifications

Contents

• 1. Introduction
  • 1.1 Requirements Language
  • 1.2 Fatal Errors
• 2. Motivation
• 3. Overview
• 4. State Considerations
• 5. Transport
• 6. Protocol Operation
  • 6.1 Discovery
  • 6.2 DNS Push Notification SUBSCRIBE
  • 6.3 DNS Push Notification Updates
  • 6.4 DNS Push Notification UNSUBSCRIBE
  • 6.5 DNS Push Notification RECONFIRM
  • 6.6 DNS Stateful Operations TLV Context Summary
  • 6.7 Client-Initiated Termination
  • 6.8 Client Fallback to Polling
• 7. Security Considerations
  • 7.1 Security Services
  • 7.2 TLS Name Authentication
  • 7.3 TLS Early Data
  • 7.4 TLS Session Resumption
• 8. IANA Considerations
• 9. References
  • 9.1 Normative References
  • 9.2 Informative References
• Acknowledgments
• Authors' Addresses

Abstract

The Domain Name System (DNS) was designed to return matching records efficiently for queries for data that are relatively static. When those records change frequently, DNS is still efficient at returning the updated results when polled, as long as the polling rate is not too high. But, there exists no mechanism for a client to be asynchronously notified when these changes occur. This document defines a mechanism for a client to be notified of such changes to DNS records, called DNS Push Notifications.

Status of This Memo

This is an Internet Standards Track document.

This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841.

Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8765.

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