[dns-operations] recursive glueless handling by 188.8.131.52
tale at dd.org
Wed Apr 15 14:33:26 UTC 2020
Calvin Browne writes:
> does anyone here know how 184.108.40.206 handles recursive glueless situations?
The Google folks are on the list and undoubtedly will answer, but I'm
still curious about what even prompts the question.
If it's actually missing glue -- NS records that are under the
delegation point -- and the delegating NS RRset does not include any
independent NSs, then the protocol itself doesn't have an intrinsic
mechanism for forward progress. A resolver should SERVFAIL its
client, perhaps with the "Code 22 - No Reachable Authority" extended
Are you seeing something that suggests Google DNS is making some
additional effort to continue?
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