Bug 488712

I suppose that changing this setting can break some other configurations. Authconfig cannot support any possible network/server configuration it will always have to limit its options.

CCing samba maintainer for his opinion whether the winbind use default domain should be set to false or to true or left alone.

No it must be a conscious choice whether user names are fully qualified or the domain is omitted for the default domain. By default they should be fully qualified to avoid possible conflicts with existing local accounts.
If you feel it is important an explicit option in authconfig may be provided I guess, but don't do that implicitly.

OK - I think I understand what I was missing: so to log in with winbind, by default I have to login as "DOMAIN\oded" instead of simply "oded", right?

I think that there should be a configuration option for this in authconfig (with a good explanation tool tip), at least so that users can discover that feature.

On the other hand, for first time boots there is a pretty good chance that there wont be conflicts with existing local accounts? And it seems like a good default to behave like Windows does for machines joined to a Windows domain, which is prefixing the domain name automatically.

This bug appears to have been reported against 'rawhide' during the Fedora 13 development cycle.
Changing version to '13'.

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Fedora 13 changed to end-of-life (EOL) status on 2011-06-25. Fedora 13 is 
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This is still an issue with current Fedora 15.

This bug appears to have been reported against 'rawhide' during the Fedora 19 development cycle.
Changing version to '19'.

(As we did not run this process for some time, it could affect also pre-Fedora 19 development
cycle bugs. We are very sorry. It will help us with cleanup during Fedora 19 End Of Life. Thank you.)

More information and reason for this action is here:
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This message is a notice that Fedora 19 is now at end of life. Fedora 
has stopped maintaining and issuing updates for Fedora 19. It is 
Fedora's policy to close all bug reports from releases that are no 
longer maintained. Approximately 4 (four) weeks from now this bug will
be closed as EOL if it remains open with a Fedora 'version' of '19'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 19 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

This package has changed maintainer in the Fedora.
Reassigning to the new maintainer of this component.

Authconfig has been replaced by authselect and it is no longer present in Fedora since Fedora 28.