diff --git a/Samples6/three-interfaces/zones b/Samples6/three-interfaces/zones
index 108ffe7f5..6f611b8b7 100644
--- a/Samples6/three-interfaces/zones
+++ b/Samples6/three-interfaces/zones
@@ -15,6 +15,6 @@
 #ZONE	TYPE	OPTIONS			IN			OUT
 #					OPTIONS			OPTIONS
 fw	firewall
-net	ipv4
-loc	ipv4
-dmz	ipv4
+net	ipv6
+loc	ipv6
+dmz	ipv6