cifs-utils 2.6.6 broken with kerberos

[Marcel]

Current alpha2 of Ubuntu 17.04 ships with version 6.6 of cifs-utils.

This version is buggy, when used with kerberos authentication.

This has also been confirmed by the samba team:

https://lists.samba.org/archive/samba-technical/2017-March/119036.html

According to this post, the bug should be fixed with version 6.7
of cifs-utils.

Please upgrade/fix package for final release of Ubuntu 17.04.

More details:
Version 6.6 does only use
    /tmp/krb5cc_<uid>
style credential caches. Ubuntu however create
    /tmp/krb5cc_<uid>_<random>
filenames.

Kerberos based cifs mounts do fail because of this.

[Marcel (linux-ng)]

A more detailed bug description was supplied as a debian bug report:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=854607

The current cifs-utils version 6.7 seems to be published in the
debian unstable tree to fix this issue.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Reimar Döffinger (reimar-doeffinger)]

Considering that cifs+kerberos mounting is completely broken, please either upgrade cifs-utils to 6.6 or drop 6.6 and provide 6.4 instead (which works just fine even in a 17.04 system).
For anyone needing a workaround, add xenial to /etc/apt/sources.list and downgrade cifs-utils to 6.4.

[Reimar Döffinger (reimar-doeffinger)]

I obviously meant "upgrade to 6.7". If there are concerns with that, at least putting it into -proposed or similar would provide a nicer fix for anyone needing it than having to install the xenial package.