Just testing with Ubuntu 20.04 lts.
After installing samba with bind9 and configure apparmor, dlopen, named.conf and so on I got problems starting bind.
Bind cannot open /var/lib/samba/private/dns/sam.ldb
This file is located in /var/lib/samba/private/sam.ldb
Why bind searching at wrong place? A bug in alpha version of ubuntu?
What can I do?