From a4980f5632404f84b7de976595d43b4969b7feac Mon Sep 17 00:00:00 2001
From: Otto Moerbeek <otto.moerbeek@open-xchange.com>
Date: Mon, 10 Aug 2020 13:36:15 +0200
Subject: [PATCH] Add comment what the effect of calling the qname-minimization
 fallback code can be for maxdepth.

---
 pdns/syncres.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pdns/syncres.cc b/pdns/syncres.cc
index 7216434727..547a3b6390 100644
--- a/pdns/syncres.cc
+++ b/pdns/syncres.cc
@@ -744,6 +744,9 @@ int SyncRes::doResolve(const DNSName &qname, const QType &qtype, vector<DNSRecor
         // Case 5: unexpected answer
         QLOG("Step5: other rcode, last effort final resolve");
         setQNameMinimization(false);
+        // We might have hit a depth level check, but we still want to allow some recursion levels in the fallback
+        // no-qname-minimization case. This has the effect that a qname minimization fallback case might reach 150% of
+        // maxdepth.
         res = doResolveNoQNameMinimization(qname, qtype, ret, depth/2, beenthere, state);
 
         if(res == RCode::NoError) {
-- 
2.47.2