diff --git a/Samples/one-interface/rules b/Samples/one-interface/rules
index 4088c81bc..38a224295 100755
--- a/Samples/one-interface/rules
+++ b/Samples/one-interface/rules
@@ -378,7 +378,9 @@
 #					#the 'kids' group
 #				!:kids	#program must not be run by a member
 #					#of the 'kids' group
-#				+upnpd	#program named 'upnpd'
+#				+upnpd	#program named upnpd (This feature was
+#					#removed from Netfilter in kernel
+#					#version 2.6.14).
 #
 #	Example: Accept SMTP requests from the DMZ to the internet
 #
diff --git a/Samples/three-interfaces/rules b/Samples/three-interfaces/rules
index 946191284..d91ad3b85 100755
--- a/Samples/three-interfaces/rules
+++ b/Samples/three-interfaces/rules
@@ -378,7 +378,9 @@
 #					#the 'kids' group
 #				!:kids	#program must not be run by a member
 #					#of the 'kids' group
-#				+upnpd	#program named 'upnpd'
+#				+upnpd	#program named upnpd (This feature was
+#					#removed from Netfilter in kernel
+#					#version 2.6.14).
 #
 #	Example: Accept SMTP requests from the DMZ to the internet
 #
diff --git a/Samples/two-interfaces/rules b/Samples/two-interfaces/rules
index 9c4f313de..22649d0f8 100755
--- a/Samples/two-interfaces/rules
+++ b/Samples/two-interfaces/rules
@@ -378,7 +378,9 @@
 #					#the 'kids' group
 #				!:kids	#program must not be run by a member
 #					#of the 'kids' group
-#				+upnpd	#program named 'upnpd'
+#				+upnpd	#program named upnpd (This feature was
+#					#removed from Netfilter in kernel
+#					#version 2.6.14).
 #
 #	Example: Accept SMTP requests from the DMZ to the internet
 #