From: Alessio Podda <alessio@isc.org>
Date: Mon, 4 May 2026 08:20:28 +0000 (+0200)
Subject: Fix DNS64 owner case after DNAME restart
X-Git-Tag: v9.21.23~2^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ade6cdf477448ef44a4e1026dea1b6af1d19d80a;p=thirdparty%2Fbind9.git

Fix DNS64 owner case after DNAME restart

When DNS64 filters a partially excluded AAAA RRset after a DNAME
restart, dns_message_findname() can return an existing message-owned
owner name while qctx->fname is released on the NXRRSET path.

Set owner case from the message-owned name used for attaching the
filtered rdataset, avoiding a stale alias to the released temporary
name.
---

diff --git a/lib/ns/query.c b/lib/ns/query.c
index ca76df4f3d5..55a93c52bf9 100644
--- a/lib/ns/query.c
+++ b/lib/ns/query.c
@@ -8269,7 +8269,7 @@ query_filter64(query_ctx_t *qctx) {
 	}
 
 	dns_rdatalist_tordataset(myrdatalist, myrdataset);
-	dns_rdataset_setownercase(myrdataset, name);
+	dns_rdataset_setownercase(myrdataset, mname);
 	client->query.attributes |= NS_QUERYATTR_NOADDITIONAL;
 	if (mname == name) {
 		if (qctx->dbuf != NULL) {