--- auditor/configure.orig	2014-07-21 17:16:30.000000000 +0800
+++ auditor/configure	2015-04-06 04:45:00.610097773 +0800
@@ -2614,7 +2614,7 @@
 				print "no"
 		end
 		begin
-			if (Dnsruby.version >= 1.53)
+			if (Dnsruby.version.to_f >= 1.53)
 				print "yes"
 			else
 				print "no"