pi@pi-hole:~ $ sudo unbound -d -vvvvv
[1570194362] unbound[28022:0] notice: Start of unbound 1.6.0.
[1570194362] unbound[28022:0] debug: increased limit(open files) from 1024 to 4140
[1570194362] unbound[28022:0] debug: creating udp4 socket 127.0.0.1 5353
[1570194362] unbound[28022:0] debug: creating tcp4 socket 127.0.0.1 5353
[1570194362] unbound[28022:0] debug: creating tcp4 socket 127.0.0.1 8953
[1570194362] unbound[28022:0] debug: setup SSL certificates
[1570194362] unbound[28022:0] debug: chdir to /etc/unbound
[1570194362] unbound[28022:0] debug: drop user privileges, run as unbound
[1570194362] unbound[28022:0] debug: switching log to /var/log/unbound.log
I think this may be linked with qname minimisation.
I noted I had a file qname-minimisation.conf in /etc/unbound/unbound.conf.d
This file contains:
qname-minimisation: yes
If I remove this file and add the qname option to the main /unbound.conf.d/pihole.conf file I see similar behaviour.
If I change the option to qname-minimisation: no I see similar behaviour.
If I remove qname-minimisation completely from the config, I dont appear to have any problems