Unbound DNS Solution to SERVFAIL status seems to not work anymore

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1

Continuing the discussion from Unbound DNS keeps on returning SERVFAIL status:

Expected Behaviour:

As per my last discussion with Bucking_Horn, supposedly the ff. steps below should address this problem:

"Edit file /etc/resolvconf.conf and comment out the last line which should read:
unbound_conf=/etc/unbound/unbound.conf.d/resolvconf_resolvers.conf

Delete the unwanted unbound configuration file:
sudo rm /etc/unbound/unbound.conf.d/resolvconf_resolvers.conf

Restart unbound:
sudo service unbound restart"

It still works, however...

Actual Behaviour:

Every time I restart the RPI or for some instance, it returns SERVFAIL as I check on my query log. I do the same steps above, and it fixes it. But I have to do it every now and then. It seems an unusual behavior to me.

I need your help on this. TIA

Debug Token:

https://tricorder.pi-hole.net/tpDigh2B/

2

That last unbound_conf= line should be commented out with a hash # like below or else every reboot, the resolvconf_resolvers.conf file will be restored:

pi@ph5b:~ $ sudo nano /etc/resolvconf.conf
# Configuration for resolvconf(8)
# See resolvconf.conf(5) for details

resolv_conf=/etc/resolv.conf
# If you run a local name server, you should uncomment the below line and
# configure your subscribers configuration files below.
#name_servers=127.0.0.1

# Mirror the Debian package defaults for the below resolvers
# so that resolvconf integrates seemlessly.
dnsmasq_resolv=/var/run/dnsmasq/resolv.conf
pdnsd_conf=/etc/pdnsd.conf
#unbound_conf=/etc/unbound/unbound.conf.d/resolvconf_resolvers.conf