Comment 5 for bug 1584485

According to document:

https://wiki.debian.org/MaintainerScripts

I added constrains on letting upgrade to happen for:

libnss-winbind
libpam-winbind
libwbclient0
samba-dsdb-modules
samba-libs
samba
winbind

When winbind is enabled in either /etc/nsswitch.conf or in /etc/pam.d/* files.

So, whenever trying to upgrade samba you will get something like:

----

Do you want to continue? [Y/n] y
(Reading database ... 115473 files and directories currently installed.)
Preparing to unpack .../libnss-winbind_2%3a4.3.9+dfsg-0ubuntu0.14.04.2~lp1584485~4_amd64.deb ...

Warning:

You have winbind configured in either NSS (/etc/nsswitch.conf)
or in PAM (/etc/pam.d/*). Before proceeding with the
installation, or upgrade, make sure to disable winbind!

dpkg: error processing archive /var/cache/apt/archives/libnss-winbind_2%3a4.3.9+dfsg-0ubuntu0.14.04.2~lp1584485~4_amd64.deb (--unpack):
 subprocess new pre-installation script returned error exit status 1
dpkg: error while cleaning up:
 subprocess new post-removal script returned error exit status 1

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That will save you from crashing your system because of NSS being broken.

Attaching debdiffs...