A domain name in the RDATA section written without a trailing dot is
relative to the zone origin (RFC 1035 §5.1), so "www CNAME host" in
example.com. means host.example.com. The qualifier ran on the record
after dns.NewRR had already resolved every RDATA name against the root,
which turns "host" into "host." and makes the two indistinguishable --
relative() saw the trailing dot and left it alone. Every relative CNAME,
NS, MX, PTR, SRV, NAPTR, SOA and SVCB target therefore pointed at the
DNS root, which showed up as a local zone answering a CNAME with
"host." and the alias target holding no local answer. Qualification now
happens in assemble on the token stream, before the record is built,
using a table of the RDATA positions that hold a name per type; names
that already end in a dot stay absolute, so the RPZ targets "." and
"rpz-drop." and the null MX targets are unaffected.
Fix three wrong expectations in the localzone tests while here. The loop
fixture was built with dns.NewRR on "alias.example.com", which cannot
parse because the RR library wants a TTL and class column, so the
expected record now spells them out. The origin-derivation fixture
used "a" as an owner name, and a leading token that names an RR type
reads as an omitted owner, which has no previous owner to inherit on
the first line of a file; the owner is now a word. The merge test
counted the SOA, but it is zone metadata rather than a queryable
record, so two files contribute three records. The holder race test also
looked up a name from the base zone while the holder was serving a store
compiled from other.test., which no answer could satisfy; it now
accepts either store's data.
- cache.Entry.Hits and LRU.perShard become atomics; SetCapacity now evicts
down to the new budget; packKey fully qualifies names before packing
- resolver.Pool rewritten copy-on-write (atomic.Pointer to an immutable
state); Upstream is immutable with shared *upstreamStats, so health
survives a Rebind and the query path stops racing the config hook
- Pool.Exchange no longer marks a dead upstream healthy: Success was
called before the error check, so the breaker never tripped
- qlog live ring publishes through atomic pointers
- blocklist.Holder.Get nil-safe; Builder lists each source once
- web: fix toast(string) misuse that rendered empty mutation toasts
- add unit tests for cache (with benchmarks) and zonefile
- STATUS.md: green -race integration suite, remaining failures and the
broken bbolt snapshot round trip documented
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