unbound 1.9 failing on debian

A few of my deb and dev machines upgraded to unbound 1.9,
which completely failed.

After some effort I confirmed that it is calling chroot("/etc/unbound")
and therefore is unable to read /var/lib/unbound/root.key and thus exits.

There is no chroot setting in unbound.conf (including in its includes).

I was forced manually to downgrade back to 1.8.1 to get things to work

Is that default chroot(2) call an upstream change?

-JimC

This is Debian bug #921538, not a bug in upstream Unbound.

Hello,

Idézem/Quoting Simon Deziel via Unbound-users <unbound-users@nlnetlabs.nl>:

Hello,

A few of my deb and dev machines upgraded to unbound 1.9,
which completely failed.

This is a known issue:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=921538

Regards,
Simon

My strategy on major version change is as follows:
wait for bugs to be discovered.
So 1.9.1 is the first install candidate.

SZÉPE Viktor, honlap üzemeltetés / Running your application
https://github.com/szepeviktor/debian-server-tools/blob/master/CV.md

The stable branch didn't get that regression as 1.9.0 was only uploaded
to unstable.

Regards,
Simon