I did some tests, it is the line include "/var/lib/samba/bind-dns/named.conf"; which trigger the coredump. this file contains only a call to database "dlopen /usr/lib64/samba/bind9/dlz_bind9_18.so -d 9"; This file exists rasp:/var/lib/samba/bind-dns # ls -l /usr/lib64/samba/bind9/dlz_bind9_18.so -rwxr-xr-x 1 root root 67632 Feb 23 20:13 /usr/lib64/samba/bind9/dlz_bind9_18.so Regards