use new packet for response; rename variable to request and response

(cherry picked from commit 280d0ca5)
15 jobs for 649-resolver-test-failing-v9_11 in 12 minutes and 4 seconds (queued for 6 seconds)
Status Job ID Name Coverage
  Precheck
passed precheck:debian:sid:amd64 #81147
amd64 docker linux

00:00:20

 
  Build
passed build:centos:centos6:amd64 #81148
amd64 docker linux

00:02:22

passed build:centos:centos7:amd64 #81149
amd64 docker linux

00:02:34

passed build:debian:sid:amd64 #81150
amd64 docker linux

00:01:49

passed build:debian:sid:i386 #81151
i386 docker linux

00:01:36

 
  Test
passed docs:debian:sid:amd64 #81152
amd64 docker linux

00:00:54

passed install:debian:sid:amd64 #81161
amd64 docker linux

00:02:28

passed systemtest:centos:centos6:amd64 #81157
amd64 docker linux

00:04:02

passed systemtest:centos:centos7:amd64 #81158
amd64 docker linux

00:04:02

passed systemtest:debian:sid:amd64 #81159
amd64 docker linux

00:09:08

passed systemtest:debian:sid:i386 #81160
i386 docker linux

00:07:54

passed unittest:centos:centos6:amd64 #81153
amd64 docker linux

00:01:07

passed unittest:centos:centos7:amd64 #81154
amd64 docker linux

00:01:09

passed unittest:debian:sid:amd64 #81155
amd64 docker linux

00:00:51

passed unittest:debian:sid:i386 #81156
i386 docker linux

00:00:56