From: Otto Moerbeek <otto.moerbeek@open-xchange.com>
Date: Mon, 10 Aug 2020 10:57:11 +0000 (+0200)
Subject: Allow some more depth headroom for the no-qname-minimization fallback case.
X-Git-Tag: rec-4.3.4^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6584fb18256c50a1b6689b326a2947a8010cc45c;p=thirdparty%2Fpdns.git

Allow some more depth headroom for the no-qname-minimization fallback case.

If we hit maxdepth, we still want to have some room to do the doResolveNoQNameMinimization call.

(cherry picked from commit cec49628a07e03d337aa5cf51fd925bbe31291bb)
---

diff --git a/pdns/syncres.cc b/pdns/syncres.cc
index 11bccecb39..97a813ece7 100644
--- a/pdns/syncres.cc
+++ b/pdns/syncres.cc
@@ -739,7 +739,7 @@ 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);
-        res = doResolveNoQNameMinimization(qname, qtype, ret, depth, beenthere, state);
+        res = doResolveNoQNameMinimization(qname, qtype, ret, depth/2, beenthere, state);
 
         if(res == RCode::NoError) {
           s_qnameminfallbacksuccess++;