log UDP TC bit during trace

(cherry picked from commit b1f2295bfd5295daaec847339c51930dd83845a6)

diff --git a/pdns/syncres.cc b/pdns/syncres.cc
index 1109293964d8f48ababf50181262aec36622fa22..8e8f747b1cba6cf7a607ea77c70cb7841653c02e 100644 (file)
--- a/pdns/syncres.cc
+++ b/pdns/syncres.cc
@@ -2985,6 +2985,7 @@ bool SyncRes::doResolveAtThisIP(const std::string& prefix, const DNSName& qname,
       }
       return false;
     }
+    LOG(prefix<<qname<<": truncated bit set, over UDP"<<endl);
 
     return true;
   }