Maximum number of concurrent DNS queries reached

[rothirothi]

Running pihole with unbound. Since the update, I get this warning. Internet and blocking is still working nicely, however, in my log I can see that at sometimes, there is a long list of entries with "config error is refused" and sometimes "servfail".

I have the same problem on another device that I set up for a friend.

Debug Token:

https://tricorder.pi-hole.net/C8M5nfkB/

[Bucking_Horn]

Sounds like your are affected by a DNS loop created between your upstream unbound and Pi-hole. For a complete background, see WARNING: Raspbian October 2021 release bullseye + unbound .

To fix this, try

1. Edit file /etc/resolvconf.conf and comment out the last line which should read:

unbound_conf=/etc/unbound/unbound.conf.d/resolvconf_resolvers.conf

2. Delete the unwanted unbound configuration file:

sudo rm /etc/unbound/unbound.conf.d/resolvconf_resolvers.conf

3. Restart unbound:

sudo service unbound restart

[rothirothi]

@Bucking_Horn

/etc/resolvconf.conf

Thanks for the super quick help!