def test_bad_address(self):
# Make sure proper exception is raised when connecting to a bogus
# address.
- self.assertRaises(IOError,
+
+ # as indicated by the comment below, this might fail with some ISP,
+ # so we run the test only when -unetwork/-uall is specified to
+ # mitigate the problem a bit (see #17564)
+ support.requires('network')
+ self.assertRaises(OSError,
# Given that both VeriSign and various ISPs have in
# the past or are presently hijacking various invalid
# domain name requests in an attempt to boost traffic