diff --git a/tests/17-rpl-border-router/04-border-router-traceroute.sh b/tests/17-rpl-border-router/04-border-router-traceroute.sh
index 96278e7d5..52d2f102c 100755
--- a/tests/17-rpl-border-router/04-border-router-traceroute.sh
+++ b/tests/17-rpl-border-router/04-border-router-traceroute.sh
@@ -17,6 +17,9 @@ java -Xshare:on -jar $CONTIKI/tools/cooja/dist/cooja.jar -nogui=$BASENAME.csc -c
 JPID=$!
 sleep 20
 
+echo "Enabling IPv6"
+sudo sysctl -w net.ipv6.conf.all.disable_ipv6=0
+
 # Connect to the simlation
 echo "Starting tunslip6"
 make -C $CONTIKI/tools tunslip6
diff --git a/tests/17-rpl-border-router/test-border-router.sh b/tests/17-rpl-border-router/test-border-router.sh
index db399ca70..854abebf1 100755
--- a/tests/17-rpl-border-router/test-border-router.sh
+++ b/tests/17-rpl-border-router/test-border-router.sh
@@ -15,6 +15,9 @@ java -Xshare:on -jar $CONTIKI/tools/cooja/dist/cooja.jar -nogui=$BASENAME.csc -c
 JPID=$!
 sleep 20
 
+echo "Enabling IPv6"
+sudo sysctl -w net.ipv6.conf.all.disable_ipv6=0
+
 # Connect to the simlation
 echo "Starting tunslip6"
 make -C $CONTIKI/tools tunslip6
diff --git a/tests/18-native-networking/01-native-ping.sh b/tests/18-native-networking/01-native-ping.sh
index d70bd7a5e..6fa930207 100755
--- a/tests/18-native-networking/01-native-ping.sh
+++ b/tests/18-native-networking/01-native-ping.sh
@@ -7,6 +7,9 @@ BASENAME=01-native-ping
 
 IPADDR=fd00::302:304:506:708
 
+echo "Enabling IPv6"
+sudo sysctl -w net.ipv6.conf.all.disable_ipv6=0
+
 # Starting Contiki-NG native node
 echo "Starting native node"
 make -C $CONTIKI/examples/hello-world > make.log 2> make.err