diff --git a/bin/tests/system/serve-stale/ns1/named1.conf.in b/bin/tests/system/serve-stale/ns1/named1.conf.in
index 41347871cd..2ccd9fb3a9 100644
--- a/bin/tests/system/serve-stale/ns1/named1.conf.in
+++ b/bin/tests/system/serve-stale/ns1/named1.conf.in
@@ -35,6 +35,10 @@ options {
 	servfail-ttl 0;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type primary;
 	file "root.db";
diff --git a/bin/tests/system/serve-stale/ns1/named2.conf.in b/bin/tests/system/serve-stale/ns1/named2.conf.in
index 06fae5369c..f3d7e8eb3c 100644
--- a/bin/tests/system/serve-stale/ns1/named2.conf.in
+++ b/bin/tests/system/serve-stale/ns1/named2.conf.in
@@ -34,6 +34,10 @@ options {
 	servfail-ttl 0;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type primary;
 	file "root.db";
diff --git a/bin/tests/system/serve-stale/ns1/named3.conf.in b/bin/tests/system/serve-stale/ns1/named3.conf.in
index f97dea958d..e981a36b7a 100644
--- a/bin/tests/system/serve-stale/ns1/named3.conf.in
+++ b/bin/tests/system/serve-stale/ns1/named3.conf.in
@@ -35,6 +35,10 @@ options {
 	servfail-ttl 0;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type primary;
 	file "root.db";
diff --git a/bin/tests/system/serve-stale/ns3/named1.conf.in b/bin/tests/system/serve-stale/ns3/named1.conf.in
index d76b348151..89d3a4ae09 100644
--- a/bin/tests/system/serve-stale/ns3/named1.conf.in
+++ b/bin/tests/system/serve-stale/ns3/named1.conf.in
@@ -31,6 +31,10 @@ options {
 	stale-cache-enable yes;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type secondary;
 	primaries { 10.53.0.1; };
diff --git a/bin/tests/system/serve-stale/ns3/named2.conf.in b/bin/tests/system/serve-stale/ns3/named2.conf.in
index 40c053e07f..931f30b535 100644
--- a/bin/tests/system/serve-stale/ns3/named2.conf.in
+++ b/bin/tests/system/serve-stale/ns3/named2.conf.in
@@ -42,6 +42,10 @@ options {
 	resolver-query-timeout 10;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type secondary;
 	primaries { 10.53.0.1; };
diff --git a/bin/tests/system/serve-stale/ns3/named3.conf.in b/bin/tests/system/serve-stale/ns3/named3.conf.in
index 7d50bc8ff8..c450822938 100644
--- a/bin/tests/system/serve-stale/ns3/named3.conf.in
+++ b/bin/tests/system/serve-stale/ns3/named3.conf.in
@@ -41,6 +41,10 @@ options {
 	resolver-query-timeout 10;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type hint;
 	file "root.db";
diff --git a/bin/tests/system/serve-stale/ns3/named4.conf.in b/bin/tests/system/serve-stale/ns3/named4.conf.in
index 5fd5ef82f4..b6e09ece85 100644
--- a/bin/tests/system/serve-stale/ns3/named4.conf.in
+++ b/bin/tests/system/serve-stale/ns3/named4.conf.in
@@ -42,6 +42,10 @@ options {
 	max-stale-ttl 3600;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type hint;
 	file "root.db";
diff --git a/bin/tests/system/serve-stale/ns3/named5.conf.in b/bin/tests/system/serve-stale/ns3/named5.conf.in
index 92b2cdf108..cb5ae3b267 100644
--- a/bin/tests/system/serve-stale/ns3/named5.conf.in
+++ b/bin/tests/system/serve-stale/ns3/named5.conf.in
@@ -42,6 +42,10 @@ options {
 	max-stale-ttl 3600;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type hint;
 	file "root.db";
diff --git a/bin/tests/system/serve-stale/ns3/named6.conf.in b/bin/tests/system/serve-stale/ns3/named6.conf.in
index 2b7c42c456..b722cb0f4d 100644
--- a/bin/tests/system/serve-stale/ns3/named6.conf.in
+++ b/bin/tests/system/serve-stale/ns3/named6.conf.in
@@ -43,6 +43,10 @@ options {
 	max-stale-ttl 3600;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type hint;
 	file "root.db";
diff --git a/bin/tests/system/serve-stale/ns3/named7.conf.in b/bin/tests/system/serve-stale/ns3/named7.conf.in
index 10e77d7d25..18b228155f 100644
--- a/bin/tests/system/serve-stale/ns3/named7.conf.in
+++ b/bin/tests/system/serve-stale/ns3/named7.conf.in
@@ -47,6 +47,10 @@ options {
 	max-stale-ttl 3600;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type secondary;
 	primaries { 10.53.0.1; };
diff --git a/bin/tests/system/serve-stale/ns3/named8.conf.in b/bin/tests/system/serve-stale/ns3/named8.conf.in
index 3c135af04f..ccc30066ee 100644
--- a/bin/tests/system/serve-stale/ns3/named8.conf.in
+++ b/bin/tests/system/serve-stale/ns3/named8.conf.in
@@ -37,6 +37,10 @@ options {
 	};
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type secondary;
 	primaries { 10.53.0.1; };
diff --git a/bin/tests/system/serve-stale/ns4/named.conf.in b/bin/tests/system/serve-stale/ns4/named.conf.in
index a6d0cc1e51..00d4736dc1 100644
--- a/bin/tests/system/serve-stale/ns4/named.conf.in
+++ b/bin/tests/system/serve-stale/ns4/named.conf.in
@@ -32,6 +32,10 @@ options {
 	stale-cache-enable yes;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type secondary;
 	primaries { 10.53.0.1; };
diff --git a/bin/tests/system/serve-stale/ns5/named.conf.in b/bin/tests/system/serve-stale/ns5/named.conf.in
index af725f6d48..c82c1b9022 100644
--- a/bin/tests/system/serve-stale/ns5/named.conf.in
+++ b/bin/tests/system/serve-stale/ns5/named.conf.in
@@ -33,6 +33,10 @@ options {
 	max-cache-ttl 24h;
 };
 
+server 10.53.0.2 {
+	tcp-on-no-cookie false;
+};
+
 zone "." {
 	type secondary;
 	primaries { 10.53.0.1; };