Package: unbound Followup-For: Bug #921538 I found the that problem is that 1.9.0-1 does a chroot("/etc/unbound") even though there is no chroot option in the config files.
Once that occurs, it cannot see files like /var/lib/unbound/root.key et alia. -- System Information: Debian Release: buster/sid APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 4.15.0-2-amd64 (SMP w/1 CPU core) Kernel taint flags: TAINT_WARN Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init) Versions of packages unbound depends on: ii adduser 3.118 ii dns-root-data 2018091102 ii libc6 2.28-6 ii libevent-2.1-6 2.1.8-stable-4 ii libfstrm0 0.4.0-1 ii libprotobuf-c1 1.3.1-1+b1 ii libpython3.7 3.7.2-2 ii libssl1.1 1.1.1a-1 ii libsystemd0 240-5 ii lsb-base 10.2018112800 ii openssl 1.1.1a-1 ii unbound-anchor 1.8.1-1+b1 unbound recommends no packages. Versions of packages unbound suggests: pn apparmor <none> -- no debconf information