Comment 3 for bug 1641203

So I tested upgrading SSSD like this.
- First change all xenial to zesty in /etc/apt/sources.list
- apt update
- apt install sssd

After this, login with domain user works fine and I found no regression.

See below for log of upgraded/installed packages.

The following package was automatically installed and is no longer required:
  libaio1 libboost-iostreams1.62.0 libboost-random1.62.0 libboost-system1.62.0 libboost-thread1.62.0
Use 'apt autoremove' to remove it.

The following additional packages will be installed:
  dirmngr gnupg gnupg-agent libassuan0 libgcrypt20 libgnutls-openssl27 libgnutls30 libgpg-error0 libgpgme11 libini-config5 libipa-hbac0 libksba8 libldb1 libnpth0 libreadline7 libsmbclient
  libsss-idmap0 libtasn1-6 libwbclient0 pinentry-curses python-ldb python-samba python-sss python-talloc python3-software-properties samba samba-common samba-common-bin samba-dsdb-modules
  samba-libs software-properties-common sssd-ad sssd-ad-common sssd-common sssd-ipa sssd-krb5 sssd-krb5-common sssd-ldap sssd-proxy

Suggested packages:
  tor parcimonie xloadimage rng-tools gnutls-bin gpgsm pinentry-doc python-gpgme bind9 bind9utils ctdb ldb-tools ntp | chrony smbldap-tools winbind heimdal-clients adcli sssd-tools
  libsasl2-modules-ldap

Recommended packages:
  gnupg-l10n samba-vfs-modules

The following packages will be REMOVED:
  samba-vfs-modules

The following NEW packages will be installed:
  dirmngr gnupg-agent libassuan0 libgpgme11 libksba8 libnpth0 libreadline7 pinentry-curses

The following packages will be upgraded:
  gnupg libgcrypt20 libgnutls-openssl27 libgnutls30 libgpg-error0 libini-config5 libipa-hbac0 libldb1 libsmbclient libsss-idmap0 libtasn1-6 libwbclient0 python-ldb python-samba python-sss
  python-talloc python3-software-properties samba samba-common samba-common-bin samba-dsdb-modules samba-libs software-properties-common sssd sssd-ad sssd-ad-common sssd-common sssd-ipa
  sssd-krb5 sssd-krb5-common sssd-ldap sssd-proxy

32 upgraded, 8 newly installed, 1 to remove and 402 not upgraded.
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