diff --git a/fail2ban-testcases b/fail2ban-testcases
index 5abf506c..c05a64bd 100755
--- a/fail2ban-testcases
+++ b/fail2ban-testcases
@@ -65,6 +65,7 @@ tests = unittest.TestSuite()
 tests.addTest(unittest.makeSuite(filtertestcase.IgnoreIP))
 tests.addTest(unittest.makeSuite(filtertestcase.LogFile))
 tests.addTest(unittest.makeSuite(filtertestcase.GetFailures))
+tests.addTest(unittest.makeSuite(filtertestcase.DNSUtilsTests))
 # Server
 #tests.addTest(unittest.makeSuite(servertestcase.StartStop))
 #tests.addTest(unittest.makeSuite(servertestcase.Transmitter))
diff --git a/testcases/filtertestcase.py b/testcases/filtertestcase.py
index f18cb278..c004c7d2 100644
--- a/testcases/filtertestcase.py
+++ b/testcases/filtertestcase.py
@@ -31,7 +31,7 @@ import unittest
 import time
 
 from server.filterpoll import FilterPoll
-from server.filter import FileFilter
+from server.filter import FileFilter, DNSUtils
 from server.failmanager import FailManager
 from server.failmanager import FailManagerEmpty
 
@@ -219,3 +219,15 @@ class GetFailures(unittest.TestCase):
 		self.__filter.getFailures(GetFailures.FILENAME_02)
 		
 		self.assertRaises(FailManagerEmpty, self.__filter.failManager.toBan)
+
+class DNSUtilsTests(unittest.TestCase):
+
+	def testTextToIp(self):
+		bogus = [
+			'doh1.2.3.4.buga.xxxxx.yyy',
+			'1.2.3.4.buga.xxxxx.yyy',
+			]
+		"""Really bogus addresses which should have no matches"""
+		for s in bogus:
+			res = DNSUtils.textToIp(s)
+			self.assertEqual(res, [])