[Bug 493565] [NEW] Cifs mount fails when DFS referrals are used by server, keyutils needed

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I am trying to mount a Windows server 2003 share using a command like
this in our enterprise network:

mount.cifs //winserver/someshare/somedirectory /mymount -o
user=myuser,dom=ourdomain

However I get the following error code on the command line:

mount error(11): Resource temporarily unavailable

In the syslog I see

Dec  7 12:34:20 pc1471 kernel: [ 5442.667417]  CIFS VFS: dns_resolve_server_name_to_ip: unable to resolve: server323
Dec  7 12:34:20 pc1471 kernel: [ 5442.667423]  CIFS VFS: cifs_compose_mount_options: Failed to resolve server part of \\server323\fsfds to IP: -11
Dec  7 12:34:20 pc1471 kernel: [ 5442.667831]  CIFS VFS: cifs_mount failed w/return code = -11

Browsing the share with smbclient works fine, mounting via gnome desktop
does not work either.

After doing a

apt-get install keyutils

the mount command works ok (now cifs.upcall is used for DNS resolving).

So one solution would be to add a dependency for keyutils to the cifs
packages.

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: kernel-series-unknown
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Cifs mount fails when DFS referrals are used by server, keyutils needed
https://bugs.edge.launchpad.net/bugs/493565
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