[Samba] No DNS UPdate possible Fedora 34 samba 4.14

[Mueller]

Dear all,

I set up a test os , fedora 34 with bind 9.16.
I installed the  packages from fedora repo: samba-dc abd samba-bind-dlz.
I provisioned  with bind9_dlz. All with no errors.

samba-tool domain provision --dns-backend=BIND9_DLZ --realm=EXAMPLE.COM
--domain=EXAMPLE --server-role=dc     --adminpass=Password
I Set in my /etc/named.conf :

 tkey-gssapi-keytab "/var/lib/samba/private/dns.keytab";
include "/var/lib/samba/bind-dns/named.conf"; 
my /etc/krb5.conf is named readable

A normal lookup was working on the fly, but if tried to join a new windows
client to my domain bind keeps me telling 

client @0x7f44ec000cc8 XXX.XXX.XXX.XXX#62786: update 'plk.loc/IN' denied
samba_dlz: cancelling transaction on zone plk.loc

What i recognised is, file named.conf.update was  not created on
provisioning!?
Do I need the file anymore!?

Greetings
Daniel