07d38ea3cb
Signed-off-by: huangyu <huangyu106@huawei.com> (cherry picked from commit cd59b6ec71f1147990c7f96b1e74baf413b7d4c9)
37 lines
1004 B
Diff
37 lines
1004 B
Diff
From dd7dde5743715dc0dec2defbb92b1a8637977bf9 Mon Sep 17 00:00:00 2001
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From: Matthijs Mekking <matthijs@isc.org>
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Date: Tue, 2 Aug 2022 14:21:40 +0200
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Subject: [PATCH] Don't enable serve-stale on duplicate queries
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When checking if we should enable serve-stale, add an early out case
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when the result is an error signalling a duplicate query or a query
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that would be dropped.
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(cherry picked from commit 059a4c2f4d9d3cff371842f43208d021509314fa)
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---
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lib/ns/query.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/lib/ns/query.c b/lib/ns/query.c
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index d0f025dbb9a..1bf36fea283 100644
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--- a/lib/ns/query.c
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+++ b/lib/ns/query.c
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@@ -7230,6 +7230,14 @@ query_usestale(query_ctx_t *qctx, isc_result_t result) {
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return (false);
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}
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+ if (result == DNS_R_DUPLICATE || result == DNS_R_DROP) {
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+ /*
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+ * Don't enable serve-stale if the result signals a duplicate
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+ * query or query that is being dropped.
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+ */
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+ return (false);
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+ }
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+
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qctx_clean(qctx);
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qctx_freedata(qctx);
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--
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GitLab
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