It seems to work - !"#ยค%&! Combination of -/etc/krb5.conf (though used realm for AD join) - /etc/resolv.conf ( with the right dns sserver = tweak /etc/dhcpd/dhclient.conf + /etc/NetworkManager.conf) -/etc/hostname (fqdn) -/etc/hosts (off with 127.0.1.1 fqdn shortname --> 127.0.0.1 fqdn shortname localhost)
Without a beer ;), Thanks for help :)
Best Longina