--- urllib2_original.py	2006-09-12 10:27:56.000000000 -0500
+++ urllib2.py	2007-02-24 08:42:56.781250000 -0600
@@ -946,7 +946,7 @@
             respdig = KD(H(A1), "%s:%s" % (nonce, H(A2)))
         else:
             # XXX handle auth-int.
-            pass
+            raise URLError("qop '%s' is not supported." % qop)
 
         # XXX should the partial digests be encoded too?