From 07e3cfb64d8194d5136503f4f57297f9786d857d Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Thu, 20 Apr 2017 17:47:52 +0200
Subject: [PATCH] rec: Make sure the received SOA comes from a "." auth

---
 pdns/syncres.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pdns/syncres.cc b/pdns/syncres.cc
index 6d49dbf740..d9d09c1023 100644
--- a/pdns/syncres.cc
+++ b/pdns/syncres.cc
@@ -1235,7 +1235,7 @@ bool SyncRes::processRecords(const std::string& prefix, const DNSName& qname, co
         ne.d_auth = rec.d_name;
         harvestNXRecords(lwr.d_records, ne);
         t_sstorage->negcache.add(ne);
-        if(s_rootNXTrust && ne.d_auth.isRoot()) { // We should check if it was forwarded here, see issue #5107
+        if(s_rootNXTrust && ne.d_auth.isRoot() && auth.isRoot()) {
           ne.d_name = ne.d_name.getLastLabel();
           t_sstorage->negcache.add(ne);
         }
-- 
2.47.2