diff --git a/ChangeLog b/ChangeLog
index f64cef1451..d0a17a7f35 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Wed May 20 01:58:12 2015  Tanaka Akira  <akr@fsij.org>
+
+	* lib/resolv.rb (Resolv::DNS::Label::Str#==): Check class equality.
+	  (Resolv::DNS::Name#initialize): Normalize labels as
+	  Resolv::DNS::Label::Str objects.
+
 Wed May 20 01:47:23 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* iseq.c (rb_iseq_compile_with_option): check source type, must be
diff --git a/lib/resolv.rb b/lib/resolv.rb
index 7855c6eeb8..dee6afd1f5 100644
--- a/lib/resolv.rb
+++ b/lib/resolv.rb
@@ -1183,7 +1183,7 @@ class Resolv
         end
 
         def ==(other)
-          return @downcase == other.downcase
+          return self.class == other.class && @downcase == other.downcase
         end
 
         def eql?(other)
@@ -1219,6 +1219,14 @@ class Resolv
       end
 
       def initialize(labels, absolute=true) # :nodoc:
+        labels = labels.map {|label|
+          case label
+          when String then Label::Str.new(label)
+          when Label::Str then label
+          else
+            raise ArgumentError, "unexpected label: #{label.inspect}"
+          end
+        }
         @labels = labels
         @absolute = absolute
       end
diff --git a/test/resolv/test_dns.rb b/test/resolv/test_dns.rb
index 8e54dd7904..d7e5c3683a 100644
--- a/test/resolv/test_dns.rb
+++ b/test/resolv/test_dns.rb
@@ -190,4 +190,11 @@ class TestResolvDNS < Test::Unit::TestCase
     upper = Resolv::DNS::Name.create("Ruby-Lang.org")
     assert_equal(lower, upper, bug10550)
   end
+
+  def test_ipv6_name
+    addr = Resolv::IPv6.new("\0"*16)
+    labels = addr.to_name.to_a
+    expected = (['0'] * 32 + ['ip6', 'arpa']).map {|label| Resolv::DNS::Label::Str.new(label) }
+    assert_equal(expected, labels)
+  end
 end
diff --git a/version.h b/version.h
index a5e49021ca..5d42482e87 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.2.3"
 #define RUBY_RELEASE_DATE "2015-05-20"
-#define RUBY_PATCHLEVEL 103
+#define RUBY_PATCHLEVEL 104
 
 #define RUBY_RELEASE_YEAR 2015
 #define RUBY_RELEASE_MONTH 5