Comment 31 for bug 1576799

apt-cache policy samba
samba:
  Installed: 2:4.3.11+dfsg-0ubuntu0.16.04.12
  Candidate: 2:4.3.11+dfsg-0ubuntu0.16.04.13~ppa1
  Version table:
     2:4.3.11+dfsg-0ubuntu0.16.04.13~ppa1 500
        500 http://ppa.launchpad.net/ahasenack/samba-tls-regression-1576799/ubuntu xenial/main amd64 Packages
 *** 2:4.3.11+dfsg-0ubuntu0.16.04.12 500
        500 http://in.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        100 /var/lib/dpkg/status
     2:4.3.8+dfsg-0ubuntu1 500
        500 http://in.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

It shows your PPA repository.

As mentioned earlier libads.so.0 is updated on 16 nov
ll /usr/lib/x86_64-linux-gnu/samba/libads.so.0
-rw-r--r-- 1 root root 162128 Nov 16 18:11 /usr/lib/x86_64-linux-gnu/samba/libads.so.0

Alternately If you can provide library i will replace the same in my machine.