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Status: Verified (1)

RFC 8806, "Running a Root Server Local to a Resolver", June 2020

Errata ID: 7692
Status: Verified
Type: Editorial
Publication Format(s) : TEXT, PDF, HTML
Reported By: Deliang Chang
Date Reported: 2023-10-31
Verifier Name: RFC Editor
Date Verified: 2023-10-31

Section 3 says:

   There is a risk that a system using a local authoritative server for
   the root zone cannot refresh the contents of the root zone before the
   expire time in the SOA.  A system using a local authoritative server
   for the root zone MUST NOT serve stale data for the root zone.  To
   mitigate the risk that stale data is served, the local root server
   MUST immediately switch to using non-local root servers when it
   detects that it would be serving state data.

It should say:

   There is a risk that a system using a local authoritative server for
   the root zone cannot refresh the contents of the root zone before the
   expire time in the SOA.  A system using a local authoritative server
   for the root zone MUST NOT serve stale data for the root zone.  To
   mitigate the risk that stale data is served, the local root server
   MUST immediately switch to using non-local root servers when it
   detects that it would be serving stale data.

Notes:

Based on the context, it seems that in the last sentence the intended word is "stale" as in stale data, instead of "state". So, I believe there might be a typo in the text, and the correct interpretation would be to swith back to the non-local root when stale data is detected.

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