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32 lines
1.3 KiB
Diff
32 lines
1.3 KiB
Diff
From 9396752c115b3ab733fa476b30da73237e12e7ba Mon Sep 17 00:00:00 2001
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From: Hans Dedecker <dedeckeh@gmail.com>
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Date: Tue, 27 Jun 2017 22:08:47 +0100
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Subject: [PATCH] Try other servers if first returns REFUSED when
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--strict-order active.
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If a DNS server replies REFUSED for a given DNS query in strict order mode
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no failover to the next DNS server is triggered as the failover logic only
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covers non strict mode.
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As a result the client will be returned the REFUSED reply without first
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falling back to the secondary DNS server(s).
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Make failover support work as well for strict mode config in case REFUSED is
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replied by deleting the strict order check and rely only on forwardall being
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equal to 0 which is the case in non strict mode when a single server has been
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contacted or when strict order mode has been configured.
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---
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CHANGELOG | 4 ++++
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src/forward.c | 1 -
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2 files changed, 4 insertions(+), 1 deletion(-)
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--- a/src/forward.c
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+++ b/src/forward.c
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@@ -790,7 +790,6 @@ void reply_query(int fd, int family, tim
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/* Note: if we send extra options in the EDNS0 header, we can't recreate
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the query from the reply. */
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if (RCODE(header) == REFUSED &&
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- !option_bool(OPT_ORDER) &&
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forward->forwardall == 0 &&
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!(forward->flags & FREC_HAS_EXTRADATA))
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/* for broken servers, attempt to send to another one. */
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