RFC 7828: The edns-tcp-keepalive EDNS0 Option

DNS messages between clients and servers may be received over either UDP or TCP. UDP transport involves keeping less state on a busy server, but can cause…

Read RFC 7828 on the RFC Editor

Outgoing relationships (8 related RFCs)

Normative reference — RFC 2119: Key words for use in RFCs to Indicate Requirement Levels
Normative reference — RFC 1035: Domain names - implementation and specification
Normative reference — RFC 4033: DNS Security Introduction and Requirements
Normative reference — RFC 7230: Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing
Normative reference — RFC 6891: Extension Mechanisms for DNS (EDNS(0))
Normative reference — RFC 4786: Operation of Anycast Services
Normative reference — RFC 7766: DNS Transport over TCP - Implementation Requirements
Informative reference — RFC 6824: TCP Extensions for Multipath Operation with Multiple Addresses

Incoming relationships (5 related RFCs)

Normatively referenced by — RFC 9103: DNS Zone Transfer over TLS
Normatively referenced by — RFC 7901: CHAIN Query Requests in DNS
Normatively referenced by — RFC 8932: Recommendations for DNS Privacy Service Operators
Informatively referenced by — RFC 7858: Specification for DNS over Transport Layer Security (TLS)
Informatively referenced by — RFC 9953: DNS over CoAP (DoC)