From: bert hubert <bert.hubert@netherlabs.nl>
Date: Tue, 8 Jan 2019 20:31:55 +0000 (+0100)
Subject: Fix attempt to restrict/speed-up additional processing to auth zone
X-Git-Tag: rec-4.2.0-alpha1~7^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=137d738ae8a7e86395ee82815e8b300bc91e6f33;p=pdns

Fix attempt to restrict/speed-up additional processing to auth zone

When doing additional processing, an attempt is made to restrict the lookup
to the zone we are answering from.  Sadly, we use the domain_id of an
optional getSOA lookup, a lookup that frequently does not happen.

Fixing this shaves 20-40 microseconds from a referral when serving the root.
---

diff --git a/pdns/packethandler.cc b/pdns/packethandler.cc
index f1281a714..211908a74 100644
--- a/pdns/packethandler.cc
+++ b/pdns/packethandler.cc
@@ -456,7 +456,7 @@ int PacketHandler::doAdditionalProcessingAndDropAA(DNSPacket *p, DNSPacket *r, c
       else
         continue;
 
-      B.lookup(QType(d_doIPv6AdditionalProcessing ? QType::ANY : QType::A), lookup, p, sd.domain_id);
+      B.lookup(QType(d_doIPv6AdditionalProcessing ? QType::ANY : QType::A), lookup, p, soadata.domain_id);
 
       while(B.get(rr)) {
         if(rr.dr.d_type != QType::A && rr.dr.d_type!=QType::AAAA)