% env KRB5_KTNAME=example.keytab ./test.py -s example@hostB.example.com gssapi

*** Running GSSAPI test
Status for authGSSClientInit = Complete
Status for authGSSServerInit = Complete
Traceback (most recent call last):
  File "./test.py", line 317, in <module>
    main()
  File "./test.py", line 103, in main
    testGSSAPI(service)
  File "./test.py", line 158, in testGSSAPI
    rc = kerberos.authGSSClientStep(vc, "")
kerberos.GSSError: ((' Miscellaneous failure (see text)', 851968), ('UNKNOWN_SERVER', -1765328377))