[Pkg-samba-maint] Bug#963971: samba-libs: libndr.so.0 gone from latest version, breaks sssd-ad-common dependency

[Michael Stone]

Package: samba-libs
Version: 2:4.12.3+dfsg-2
Severity: critical
Justification: breaks the whole system

The new samba-libs package changes the soname of libndr from libndr.so.0 to
libndr.so.1 without reflecting this change in the package name. sssd-ad-common
has a dependency on samba-libs (>= 2:4.11.5+dfsg) and links to libndr.so.0.
When the samba-libs package is updated and libndr.so.0 disappears sssd fails to
start, which then makes a system's remote users unavailable. (Worse, this
doesn't happen until the next time sssd restarts--which may not be until the
next reboot.)

It's not clear why the samba-libs package doesn't include the so number, but at
the very least it needs a set of dependencies to avoid breaking sssd-ad-common.