Description of problem:
# rhn-channel -c foobar
Username: 
Password: 

Traceback (most recent call last):
  File "/usr/sbin/rhn-channel", line 98, in <module>
    main()
  File "/usr/sbin/rhn-channel", line 92, in main
    s = rhnserver.RhnServer()
NameError: global name 'rhnserver' is not defined


Version-Release number of selected component (if applicable):
rhn-setup-1.0.0-39.el6.noarch

How reproducible:
Always


The following fixes the issue:
# diff spacewalk-channel{,.fixed}
42c42
< from up2date_client import up2dateAuth, config, up2dateErrors
---
> from up2date_client import up2dateAuth, config, up2dateErrors, rhnserver

And then I get the error message saying I forgot the --add option, which is the expected behavior.