During upgrade to IPA 4.2, literally "$SUFFIX" value was added to configuration of sidgen and extdom plugins. This cause that SID are not properly configured. Upgrade must fix "$SUFFIX" to reals suffix DN, and run sidgen task against IPA domain (if exists). All trusts added when plugins configuration was broken must be re-added. https://fedorahosted.org/freeipa/ticket/5665 Reviewed-By: Tomas Babej <tbabej@redhat.com> Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>