diff --git a/examples/ipv6/rpl-border-router/Makefile b/examples/ipv6/rpl-border-router/Makefile
index fca513071..924723276 100644
--- a/examples/ipv6/rpl-border-router/Makefile
+++ b/examples/ipv6/rpl-border-router/Makefile
@@ -16,7 +16,7 @@ $(CONTIKI)/tools/tunslip6:	$(CONTIKI)/tools/tunslip6.c
 	(cd $(CONTIKI)/tools && $(MAKE) tunslip6)
 
 connect-router:	$(CONTIKI)/tools/tunslip6
-	sudo $(CONTIKI)/tools/tunslip6 aaaa::/64
+	sudo $(CONTIKI)/tools/tunslip6 aaaa::1/64
 
 connect-router-cooja:	$(CONTIKI)/tools/tunslip6
-	sudo $(CONTIKI)/tools/tunslip6 -a 127.0.0.1 aaaa::/64
+	sudo $(CONTIKI)/tools/tunslip6 -a 127.0.0.1 aaaa::1/64
diff --git a/examples/ipv6/sky-websense/Makefile b/examples/ipv6/sky-websense/Makefile
index d226693cf..19065ed43 100644
--- a/examples/ipv6/sky-websense/Makefile
+++ b/examples/ipv6/sky-websense/Makefile
@@ -17,7 +17,7 @@ $(CONTIKI)/tools/tunslip6:	$(CONTIKI)/tools/tunslip6.c
 	(cd $(CONTIKI)/tools && $(MAKE) tunslip6)
 
 connect-router:	$(CONTIKI)/tools/tunslip6
-	sudo $(CONTIKI)/tools/tunslip6 aaaa::/64
+	sudo $(CONTIKI)/tools/tunslip6 aaaa::1/64
 
 connect-router-cooja:	$(CONTIKI)/tools/tunslip6
-	sudo $(CONTIKI)/tools/tunslip6 -a 127.0.0.1 aaaa::/64
+	sudo $(CONTIKI)/tools/tunslip6 -a 127.0.0.1 aaaa::1/64