each_address should now resolve for AAAA first

AAAA over A is standards track behaviour as per RFC 6724.

lib/resolv.rb

@@ -396,10 +396,10 @@ class Resolv
     # be a Resolv::IPv4 or Resolv::IPv6
 
     def each_address(name)
-      each_resource(name, Resource::IN::A) {|resource| yield resource.address}
       if use_ipv6?
         each_resource(name, Resource::IN::AAAA) {|resource| yield resource.address}
       end
+      each_resource(name, Resource::IN::A) {|resource| yield resource.address}
     end
 
     def use_ipv6? # :nodoc: