Dns resolution is wonky

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1

I believe I am seeing a LOOP issue.. when configured with Google DNS I get resolution. When only configured with unbound (127.0.0.1#5335) I start to see high numbers of "Maximum number of concurrent DNS queries reached (max: 150)" in my logs and inability to resolve domains.

I am running two instances of pihole on separate hardware. router, I believe to be configured correctly.. Router is Mikrotik.

/ip dns
set servers=10.167.0.8,10.167.0.12
/ip dns static
add address=10.167.0.1 comment=defconf name=router.lan

/ip dhcp-server network
add address=10.167.0.0/24 dns-server=10.167.0.8,10.167.0.12 domain=garyeterry.com gateway=10.167.0.1 ntp-server=10.167.0.1

https://tricorder.pi-hole.net/Jne4uUsu/

2

Seems like you 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

  1. Delete the unwanted unbound configuration file:

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

  1. Restart unbound:

sudo service unbound restart

3

Thanks, that appears to have fixed the issue.

4

It was as if the unbound was being DOS attacked by my pihole server.. Not pleasant..

5

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6

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