diff --git a/samples/knot.sample.conf b/samples/knot.sample.conf
index 8d47e7fbbedd197eb64ef14879a8bd127caf4026..be8638072e34f63af455bcee4578f8cd44b66978 100644
--- a/samples/knot.sample.conf
+++ b/samples/knot.sample.conf
@@ -43,7 +43,7 @@ system {
 interfaces {
 
   # Interface entry
-  #
+  # 
   # Format 1: <name> { address <address>; [port <port>;] }
   ipv4 {                # <name> is an arbitrary symbolic name
     address 127.0.0.1;  # <address> may be ither IPv4 or IPv6 address
@@ -51,9 +51,19 @@ interfaces {
   }
 
   # Format 2: <name> { address <address>@<port>; }
-  shortipv4 {
-    address 127.0.0.1@53532;
-  }
+  # shortipv4 {
+  #   address 127.0.0.1@53532;
+  #}
+
+  # Format 1 (IPv6 interface)
+  # ipv6 {
+  #   address ::1@53533;
+  # }
+
+  # Format 2 (IPv6 interface)
+  # ipv6b {
+  #   address [::1]@53534;
+  # }
 
 }