From a66a8f7171092733b7491b14c09d0e4fc5965006 Mon Sep 17 00:00:00 2001
From: Peter van Dijk <peter.van.dijk@powerdns.com>
Date: Wed, 10 Jul 2019 10:01:25 +0200
Subject: [PATCH] ixfrdist: limit XFR chunk size to 16k

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

diff --git a/pdns/ixfrdist.cc b/pdns/ixfrdist.cc
index d23d554cbe..0b7f58f235 100644
--- a/pdns/ixfrdist.cc
+++ b/pdns/ixfrdist.cc
@@ -573,7 +573,7 @@ static bool addRecordToWriter(DNSPacketWriter& pw, const DNSName& zoneName, cons
 {
   pw.startRecord(record.d_name + zoneName, record.d_type, record.d_ttl, QClass::IN, DNSResourceRecord::ANSWER, compress);
   record.d_content->toPacket(pw);
-  if (pw.size() > 65535) {
+  if (pw.size() > 16384) {
     pw.rollback();
     return false;
   }
-- 
2.47.2