Does linux smb2 client supports DFS capability?

Richard Sharpe realrichardsharpe at
Wed Oct 11 16:42:12 UTC 2017

On Wed, Oct 11, 2017 at 7:25 AM, Steve French <smfrench at> wrote:
> If you are checking if the SMB3 DFS enablement has been added to your
> kernel (if your kernel is older than version 4.11), you could look to
> see if the equivalent of this patch (it is part of a small series of
> DFS related patches, but would be one of the more visible ones in the
> series)
> On Wed, Oct 11, 2017 at 6:47 AM, Aurélien Aptel <aaptel at> wrote:
>> Hi,
>> Hemanth Thummala <hemanth.thummala at> writes:
>>> If so, Can you please let me know (or point me a link) the version of cifs-utils in which support is available.
>>> I have tested with cifs-util-6.2 version. This doesn’t have the DFS support.
>> cifs-util only contains the source code of the the mount.cifs program,
>> which doesn't do much. The SMB client code lives in the cifs kernel
>> module. To use DFS with SMB2 you need to use linux kernel v4.11 or
>> newer.
>> Cheers,

I think their real interest is in the CIFS FS getting DFS referrals if

When I last looked the client could not do that.

Richard Sharpe

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