[Samba] Keytabs (obviously) not valid after password change

[steve]

On Sun, 2014-08-17 at 00:12 -0300, George wrote:
>  every
> 7 days Samba changes the machine account password which drives the keytab
> unusable.

Hi
4.1.7 AD with sssd 1.12.0
We don't observe that behaviour. sssd uses the machine key of the box it
is running upon. Our Linux machines have been up months with the same
keytab. Maybe something has changed recently? Anyone else?
Cheers,
Steve