Debian 11 requires a different DNS slave zone directory
"seems the template for slave zones should be updated.
Currently, it contains a line like
but (at least in Debian 11) it should be
The problem is that apparmor denies bind user the permission to write to /etc/bind/slave by default, regardless of permissions in the fs.
Currently I added two lines in /etc/apparmor.d/local/usr.sbin.named :
But it's just a workaround."