lib/packetgen/header/dhcpv6/duid.rb in packetgen-2.6.0 vs lib/packetgen/header/dhcpv6/duid.rb in packetgen-2.7.0

@@ -9,16 +9,15 @@
   module Header
     class DHCPv6
       # @abstract Base class for DUID (DHCP Unique ID)
       # @author Sylvain Daubert
       class DUID < Types::Fields
-        
         TYPES = {
           'DUID-LLT' => 1,
           'DUID-EN'  => 2,
           'DUID-LL'  => 3
-        }
+        }.freeze
 
         # @!attribute type
         #  16-bit DUID type
         #  @return [Integer]
         define_field :type, Types::Int16Enum, enum: TYPES
@@ -115,10 +114,10 @@
         define_field :identifier, Types::String
 
         # Get human-readable DUID description
         # @return [String]
         def to_human
-          "DUID_EN<%#x,%s>" % [en, identifier]
+          'DUID_EN<%#x,%s>' % [en, identifier]
         end
       end
 
       # DUID Based on Link-layer
       # @author Sylvain Daubert