On Fri, 16 Jan 2026, Florian Weimer wrote:
It seems to me that if we are going to say anything, we should both say that
caches and forwarders have to emit the records in chain order so that badly
written stubs won't break, and stubs have to accept records in any order so
badly written caches won't break them.
Can stubs just ignore CNAMEs and just extract addresses from A and AAAA
records found in the answer section?
My impression is that's pretty common and it's not obvious to me what the
point of the stub following the CNAME chain is. If it doesn't trust the
cache to provide the right results, there are a lot wronger things than
funky CNAMEs and stray A records.
Regards,
John Levine, [email protected], Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly
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