Shumon Huque

Shumon Huque

Software Engineer & Internet Technologist.

RFC 9471 published

less than 1 minute read

DNS Glue Requirements in Referral Responses has just been published as RFC 9471. Co-authored with Mark Andrews, Paul Wouters, and Duane Wessels.

Quoting the abstract:

“The DNS uses glue records to allow iterative clients to find the addresses of name servers that are contained within a delegated zone. Authoritative servers are expected to return all available glue records for in-domain name servers in a referral response. If message size constraints prevent the inclusion of all glue records for in-domain name servers, the server must set the TC (Truncated) flag to inform the client that the response is incomplete and that the client should use another transport to retrieve the full response. This document updates RFC 1034 to clarify correct server behavior.”

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