diff --git a/bin/tests/system/statistics/ns1/named.conf.in b/bin/tests/system/statistics/ns1/named.conf.in
index 8fd14f9855..2048d73bf9 100644
--- a/bin/tests/system/statistics/ns1/named.conf.in
+++ b/bin/tests/system/statistics/ns1/named.conf.in
@@ -24,9 +24,7 @@ options {
 	notify yes;
 };
 
-statistics-channels {
-	inet 10.53.0.1 port @EXTRAPORT1@ allow { any; };
-};
+include "statistics-channels.conf";
 
 zone "." {
 	type primary;
diff --git a/bin/tests/system/statistics/ns1/statistics-channels.conf.in b/bin/tests/system/statistics/ns1/statistics-channels.conf.in
new file mode 100644
index 0000000000..12a1e27003
--- /dev/null
+++ b/bin/tests/system/statistics/ns1/statistics-channels.conf.in
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+statistics-channels {
+        inet 10.53.0.1 port @EXTRAPORT1@ allow { any; };
+};
diff --git a/bin/tests/system/statistics/ns2/named.conf.in b/bin/tests/system/statistics/ns2/named.conf.in
index 30c46518f8..cdf18546ee 100644
--- a/bin/tests/system/statistics/ns2/named.conf.in
+++ b/bin/tests/system/statistics/ns2/named.conf.in
@@ -24,9 +24,7 @@ options {
 	notify yes;
 };
 
-statistics-channels {
-	inet 10.53.0.2 port @EXTRAPORT1@ allow { any; };
-};
+include "statistics-channels.conf";
 
 key rndc_key {
 	secret "1234abcd8765";
diff --git a/bin/tests/system/statistics/ns2/named2.conf.in b/bin/tests/system/statistics/ns2/named2.conf.in
index 39772f9822..4b8e5030f1 100644
--- a/bin/tests/system/statistics/ns2/named2.conf.in
+++ b/bin/tests/system/statistics/ns2/named2.conf.in
@@ -24,9 +24,7 @@ options {
 	notify yes;
 };
 
-statistics-channels {
-	inet 10.53.0.2 port @EXTRAPORT1@ allow { any; };
-};
+include "statistics-channels.conf";
 
 key rndc_key {
 	secret "1234abcd8765";
diff --git a/bin/tests/system/statistics/ns2/statistics-channels.conf.in b/bin/tests/system/statistics/ns2/statistics-channels.conf.in
new file mode 100644
index 0000000000..6dd1516962
--- /dev/null
+++ b/bin/tests/system/statistics/ns2/statistics-channels.conf.in
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+statistics-channels {
+        inet 10.53.0.2 port @EXTRAPORT1@ allow { any; };
+};
diff --git a/bin/tests/system/statistics/ns3/named.conf.in b/bin/tests/system/statistics/ns3/named.conf.in
index 4cc712d46b..14788263bd 100644
--- a/bin/tests/system/statistics/ns3/named.conf.in
+++ b/bin/tests/system/statistics/ns3/named.conf.in
@@ -27,9 +27,7 @@ options {
 	zone-statistics yes;
 };
 
-statistics-channels {
-	inet 10.53.0.3 port @EXTRAPORT1@ allow { any; };
-};
+include "statistics-channels.conf";
 
 key rndc_key {
 	secret "1234abcd8765";
diff --git a/bin/tests/system/statistics/ns3/statistics-channels.conf.in b/bin/tests/system/statistics/ns3/statistics-channels.conf.in
new file mode 100644
index 0000000000..a755c39439
--- /dev/null
+++ b/bin/tests/system/statistics/ns3/statistics-channels.conf.in
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+statistics-channels {
+        inet 10.53.0.3 port @EXTRAPORT1@ allow { any; };
+};
diff --git a/bin/tests/system/statistics/setup.sh b/bin/tests/system/statistics/setup.sh
index 7ffda5583c..37f52f5e32 100644
--- a/bin/tests/system/statistics/setup.sh
+++ b/bin/tests/system/statistics/setup.sh
@@ -13,6 +13,13 @@
 
 . ../conf.sh
 
-copy_setports ns1/named.conf.in ns1/named.conf
-copy_setports ns2/named.conf.in ns2/named.conf
-copy_setports ns3/named.conf.in ns3/named.conf
+for d in ns1 ns2 ns3; do
+  conf=named.conf
+  copy_setports "${d}/${conf}.in" "${d}/${conf}"
+  conf=statistics-channels.conf
+  if $FEATURETEST --have-libxml2 || $FEATURETEST --have-json-c; then
+    copy_setports "${d}/${conf}.in" "${d}/${conf}"
+  else
+    echo "" >"${d}/${conf}"
+  fi
+done
diff --git a/bin/tests/system/statschannel/prereq.sh b/bin/tests/system/statschannel/prereq.sh
index a0ad7a9bc7..df30423dc6 100644
--- a/bin/tests/system/statschannel/prereq.sh
+++ b/bin/tests/system/statschannel/prereq.sh
@@ -23,4 +23,9 @@ if ! ${PERL} -MFile::Fetch -e ''; then
   exit 1
 fi
 
+if ! $FEATURETEST --have-libxml2 && ! $FEATURETEST --have-json-c; then
+  echo_i "skip: one or both of --with-libxml2 and --with-json-c required"
+  exit 255
+fi
+
 exit 0
diff --git a/bin/tests/system/synthfromdnssec/ns1/named.conf.in b/bin/tests/system/synthfromdnssec/ns1/named.conf.in
index 9a86e24acc..6a5086e4b2 100644
--- a/bin/tests/system/synthfromdnssec/ns1/named.conf.in
+++ b/bin/tests/system/synthfromdnssec/ns1/named.conf.in
@@ -35,9 +35,7 @@ controls {
 	inet 10.53.0.1 port @CONTROLPORT@ allow { any; } keys { rndc_key; };
 };
 
-statistics-channels {
-	inet 10.53.0.1 port @EXTRAPORT1@ allow { any; };
-};
+include "statistics-channels.conf";
 
 zone "." {
 	type primary;
diff --git a/bin/tests/system/synthfromdnssec/ns1/statistics-channels.conf.in b/bin/tests/system/synthfromdnssec/ns1/statistics-channels.conf.in
new file mode 100644
index 0000000000..12a1e27003
--- /dev/null
+++ b/bin/tests/system/synthfromdnssec/ns1/statistics-channels.conf.in
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+statistics-channels {
+        inet 10.53.0.1 port @EXTRAPORT1@ allow { any; };
+};
diff --git a/bin/tests/system/synthfromdnssec/ns2/named.conf.in b/bin/tests/system/synthfromdnssec/ns2/named.conf.in
index f4b5059c44..efcf7e5d78 100644
--- a/bin/tests/system/synthfromdnssec/ns2/named.conf.in
+++ b/bin/tests/system/synthfromdnssec/ns2/named.conf.in
@@ -35,9 +35,7 @@ controls {
 	inet 10.53.0.2 port @CONTROLPORT@ allow { any; } keys { rndc_key; };
 };
 
-statistics-channels {
-	inet 10.53.0.2 port @EXTRAPORT1@ allow { any; };
-};
+include "statistics-channels.conf";
 
 zone "." {
 	type hint;
diff --git a/bin/tests/system/synthfromdnssec/ns2/statistics-channels.conf.in b/bin/tests/system/synthfromdnssec/ns2/statistics-channels.conf.in
new file mode 100644
index 0000000000..6dd1516962
--- /dev/null
+++ b/bin/tests/system/synthfromdnssec/ns2/statistics-channels.conf.in
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+statistics-channels {
+        inet 10.53.0.2 port @EXTRAPORT1@ allow { any; };
+};
diff --git a/bin/tests/system/synthfromdnssec/ns3/named.conf.in b/bin/tests/system/synthfromdnssec/ns3/named.conf.in
index 874143a543..7665d8a6e6 100644
--- a/bin/tests/system/synthfromdnssec/ns3/named.conf.in
+++ b/bin/tests/system/synthfromdnssec/ns3/named.conf.in
@@ -35,9 +35,7 @@ controls {
 	inet 10.53.0.3 port @CONTROLPORT@ allow { any; } keys { rndc_key; };
 };
 
-statistics-channels {
-	inet 10.53.0.3 port @EXTRAPORT1@ allow { any; };
-};
+include "statistics-channels.conf";
 
 zone "." {
 	type hint;
diff --git a/bin/tests/system/synthfromdnssec/ns3/statistics-channels.conf.in b/bin/tests/system/synthfromdnssec/ns3/statistics-channels.conf.in
new file mode 100644
index 0000000000..a755c39439
--- /dev/null
+++ b/bin/tests/system/synthfromdnssec/ns3/statistics-channels.conf.in
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+statistics-channels {
+        inet 10.53.0.3 port @EXTRAPORT1@ allow { any; };
+};
diff --git a/bin/tests/system/synthfromdnssec/ns4/named.conf.in b/bin/tests/system/synthfromdnssec/ns4/named.conf.in
index c9d921092e..85cbc38d98 100644
--- a/bin/tests/system/synthfromdnssec/ns4/named.conf.in
+++ b/bin/tests/system/synthfromdnssec/ns4/named.conf.in
@@ -36,9 +36,7 @@ controls {
 	inet 10.53.0.4 port @CONTROLPORT@ allow { any; } keys { rndc_key; };
 };
 
-statistics-channels {
-	inet 10.53.0.4 port @EXTRAPORT1@ allow { any; };
-};
+include "statistics-channels.conf";
 
 zone "." {
 	type hint;
diff --git a/bin/tests/system/synthfromdnssec/ns4/statistics-channels.conf.in b/bin/tests/system/synthfromdnssec/ns4/statistics-channels.conf.in
new file mode 100644
index 0000000000..5a89f8d489
--- /dev/null
+++ b/bin/tests/system/synthfromdnssec/ns4/statistics-channels.conf.in
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+statistics-channels {
+        inet 10.53.0.4 port @EXTRAPORT1@ allow { any; };
+};
diff --git a/bin/tests/system/synthfromdnssec/ns5/named.conf.in b/bin/tests/system/synthfromdnssec/ns5/named.conf.in
index 42495488c2..0875b7701e 100644
--- a/bin/tests/system/synthfromdnssec/ns5/named.conf.in
+++ b/bin/tests/system/synthfromdnssec/ns5/named.conf.in
@@ -37,9 +37,7 @@ controls {
 	inet 10.53.0.5 port @CONTROLPORT@ allow { any; } keys { rndc_key; };
 };
 
-statistics-channels {
-	inet 10.53.0.5 port @EXTRAPORT1@ allow { any; };
-};
+include "statistics-channels.conf";
 
 zone "." {
 	type hint;
diff --git a/bin/tests/system/synthfromdnssec/ns5/statistics-channels.conf.in b/bin/tests/system/synthfromdnssec/ns5/statistics-channels.conf.in
new file mode 100644
index 0000000000..12a9398c60
--- /dev/null
+++ b/bin/tests/system/synthfromdnssec/ns5/statistics-channels.conf.in
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+statistics-channels {
+        inet 10.53.0.5 port @EXTRAPORT1@ allow { any; };
+};
diff --git a/bin/tests/system/synthfromdnssec/ns6/named.conf.in b/bin/tests/system/synthfromdnssec/ns6/named.conf.in
index c10e0f70e2..1f631865ac 100644
--- a/bin/tests/system/synthfromdnssec/ns6/named.conf.in
+++ b/bin/tests/system/synthfromdnssec/ns6/named.conf.in
@@ -36,9 +36,7 @@ controls {
 	inet 10.53.0.6 port @CONTROLPORT@ allow { any; } keys { rndc_key; };
 };
 
-statistics-channels {
-	inet 10.53.0.6 port @EXTRAPORT1@ allow { any; };
-};
+include "statistics-channels.conf";
 
 zone "." {
 	type hint;
diff --git a/bin/tests/system/synthfromdnssec/ns6/statistics-channels.conf.in b/bin/tests/system/synthfromdnssec/ns6/statistics-channels.conf.in
new file mode 100644
index 0000000000..138a84bde3
--- /dev/null
+++ b/bin/tests/system/synthfromdnssec/ns6/statistics-channels.conf.in
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+statistics-channels {
+        inet 10.53.0.6 port @EXTRAPORT1@ allow { any; };
+};
diff --git a/bin/tests/system/synthfromdnssec/setup.sh b/bin/tests/system/synthfromdnssec/setup.sh
index 5d0ddee2d3..85feba601d 100644
--- a/bin/tests/system/synthfromdnssec/setup.sh
+++ b/bin/tests/system/synthfromdnssec/setup.sh
@@ -16,12 +16,16 @@
 
 set -e
 
-copy_setports ns1/named.conf.in ns1/named.conf
-copy_setports ns2/named.conf.in ns2/named.conf
-copy_setports ns3/named.conf.in ns3/named.conf
-copy_setports ns4/named.conf.in ns4/named.conf
-copy_setports ns5/named.conf.in ns5/named.conf
-copy_setports ns6/named.conf.in ns6/named.conf
+for d in ns1 ns2 ns3 ns4 ns5 ns6; do
+  conf=named.conf
+  copy_setports "${d}/${conf}.in" "${d}/${conf}"
+  conf=statistics-channels.conf
+  if $FEATURETEST --have-libxml2 || $FEATURETEST --have-json-c; then
+    copy_setports "${d}/${conf}.in" "${d}/${conf}"
+  else
+    echo "" >"${d}/${conf}"
+  fi
+done
 
 (
   cd ns1