Commit a04770e52a for bind

commit a04770e52ac3d02f417c69df9190f2acbb759e0c
Merge: 02552d3643 c40ba8844e
Author: Ondřej Surý <ondrej@isc.org>
Date:   Wed Sep 23 14:43:12 2026 +0200

    chg: usr: Reject DNS messages that repeat a SOA, CNAME, or DNAME record

    A DNS message could carry the same SOA, CNAME, or DNAME record many times and named kept every copy while parsing it; with name compression those copies took up far more memory internally than in the message itself, and every later processing step had to handle all of them. named now treats a message that repeats such a record as malformed, whether or not the copies are identical, so responses from a server that sends duplicate singleton records are rejected instead of being accepted as before.

    Closes #6335

    Merge branch '6335-reject-duplicate-singleton-records' into 'main'

    See merge request isc-projects/bind9!12803