[Samba] accidentally upgraded DC to 4.17.3 ... didn't work

[Stefan G. Weichinger]

starting adc1 broke DNS for the windows clients, so I had to stop it 
again for now

on adc1 I find:

Nov 30 10:23:26 adc1 samba[80993]:   /usr/sbin/samba_dnsupdate: ; TSIG 
error with server: tsig verify failure
Nov 30 10:23:26 adc1 samba[80993]: [2022/11/30 10:23:26.255163,  0] 
../../source4/dsdb/dns/dns_update.c:85(dnsupdate_n>
Nov 30 10:23:26 adc1 samba[80993]:   dnsupdate_nameupdate_done: Failed 
DNS update with exit code 41

I assumed that would be cleared after some initialization phase (like 
last week).