resolver: store a name's CNAME once per nameserver (closes #220) #236

Merged
clawbot merged 1 commits from issue-220-cname-stored-once into next 2026-10-02 09:09:52 +02:00
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Author SHA1 Message Date
sneak d60720816b resolver: store a name's CNAME once per nameserver (closes #220)
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For a name with a CNAME, a nameserver answers a query of any type with
that CNAME, and the records of every answer were added, so the CNAME
was stored once for each of the eight record types asked for.
collectAnswerRecords now adds each value once per record type.

A state file saved before this holds the repeated values. Load keeps
each record value once, so the first check after upgrading sees no
record change and notifies nothing for them.

Model: opus-5-5
2026-10-02 07:08:39 +00:00