extension.rb in packetgen-2.5.0

- old
+ new

@@ -1,9 +1,11 @@
 # This file is part of PacketGen
 # See https://github.com/sdaubert/packetgen for more informations
 # Copyright (C) 2016 Sylvain Daubert <sylvain.daubert@laposte.net>
 # This program is published under MIT license.
 
+# frozen_string_literal: true
+
 module PacketGen
   module Header
     class IPv6
       # Base class to handle IPv6 extensions
       # @abstract You should not use this class but its subclasses.