From 9a727c3c1ab7e552ccd11dd628b00d1aa20fa53d Mon Sep 17 00:00:00 2001
From: Ralph Dolmans <ralph@nlnetlabs.nl>
Date: Thu, 5 Oct 2017 13:55:04 +0000
Subject: [PATCH] - Use RCODE from A response on DNS64 synthesized answer.

git-svn-id: file:///svn/unbound/trunk@4365 be551aaa-1e26-0410-a405-d3ace91eadb9
---
 dns64/dns64.c | 4 ++++
 doc/Changelog | 1 +
 2 files changed, 5 insertions(+)

diff --git a/dns64/dns64.c b/dns64/dns64.c
index 2f2d1255d..7889d72e2 100644
--- a/dns64/dns64.c
+++ b/dns64/dns64.c
@@ -792,6 +792,10 @@ dns64_inform_super(struct module_qstate* qstate, int id,
 					qstate->return_msg->rep))
 		return;
 
+	/* Use return code from A query in response to client. */
+	if (super->return_rcode != LDNS_RCODE_NOERROR)
+		super->return_rcode = qstate->return_rcode;
+
 	/* Generate a response suitable for the original query. */
 	if (qstate->qinfo.qtype == LDNS_RR_TYPE_A) {
 		dns64_adjust_a(id, super, qstate);
diff --git a/doc/Changelog b/doc/Changelog
index 762d6049a..923d6b1ed 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -4,6 +4,7 @@
 
 5 October 2017: Ralph 
 	- Set trust-anchor-signaling default to yes
+	- Use RCODE from A query on DNS64 synthesized answer.
 
 2 October 2017: Wouter
 	- Fix param unused warning for windows exportsymbol compile.