# Unbound servfail

**URL:** <https://discourse.pi-hole.net/t/unbound-servfail/52508>\
**Category:** Help\
**Created:** [January 11, 2022, 8:09pm UTC](https://discourse.pi-hole.net/t/unbound-servfail/52508 "2022-01-11T20:09:08Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![mRk](https://discourse-cdn.pi-hole.net/user_avatar/discourse.pi-hole.net/mrk/32/29148_2.png) [@mRk](https://discourse.pi-hole.net/u/mRk)\
**Post date:** [January 11, 2022, 8:09pm UTC](https://discourse.pi-hole.net/t/unbound-servfail/52508/1 "2022-01-11T20:09:09Z")

</div>

Hi guys,

I installed pi-hole and unbound, but it seems I have a problem with unbound.  
I'm on raspberry model B2.

`My config files`

```auto
sudo grep -v '#\|^$' -R /etc/unbound/unbound.conf*
/etc/unbound/unbound.conf:include-toplevel: "/etc/unbound/unbound.conf.d/*.conf"
/etc/unbound/unbound.conf.d/resolvconf_resolvers.conf:forward-zone:
/etc/unbound/unbound.conf.d/resolvconf_resolvers.conf:	name: "."
/etc/unbound/unbound.conf.d/resolvconf_resolvers.conf:	forward-addr: fd0f:ee:b0::1
/etc/unbound/unbound.conf.d/root-auto-trust-anchor-file.conf:server:
/etc/unbound/unbound.conf.d/root-auto-trust-anchor-file.conf: auto-trust-anchor-file: "/var/lib/unbound/root.key"
/etc/unbound/unbound.conf.d/pi-hole.conf:server:
/etc/unbound/unbound.conf.d/pi-hole.conf: logfile: "/var/log/unbound/unbound.log"
/etc/unbound/unbound.conf.d/pi-hole.conf: verbosity: 3
/etc/unbound/unbound.conf.d/pi-hole.conf: interface: 127.0.0.1
/etc/unbound/unbound.conf.d/pi-hole.conf: port: 5335
/etc/unbound/unbound.conf.d/pi-hole.conf: do-ip4: yes
/etc/unbound/unbound.conf.d/pi-hole.conf: do-udp: yes
/etc/unbound/unbound.conf.d/pi-hole.conf: do-tcp: yes
/etc/unbound/unbound.conf.d/pi-hole.conf: do-ip6: no
/etc/unbound/unbound.conf.d/pi-hole.conf: prefer-ip6: no
/etc/unbound/unbound.conf.d/pi-hole.conf: root-hints: "/var/lib/unbound/root.hints"
/etc/unbound/unbound.conf.d/pi-hole.conf: harden-glue: yes
/etc/unbound/unbound.conf.d/pi-hole.conf: harden-dnssec-stripped: yes
/etc/unbound/unbound.conf.d/pi-hole.conf: use-caps-for-id: no
/etc/unbound/unbound.conf.d/pi-hole.conf: edns-buffer-size: 1232
/etc/unbound/unbound.conf.d/pi-hole.conf: prefetch: yes
/etc/unbound/unbound.conf.d/pi-hole.conf: num-threads: 1
/etc/unbound/unbound.conf.d/pi-hole.conf: so-rcvbuf: 1m
/etc/unbound/unbound.conf.d/pi-hole.conf: private-address: 192.168.0.0/16
/etc/unbound/unbound.conf.d/pi-hole.conf: private-address: 169.254.0.0/16
/etc/unbound/unbound.conf.d/pi-hole.conf: private-address: 172.16.0.0/12
/etc/unbound/unbound.conf.d/pi-hole.conf: private-address: 10.0.0.0/8
/etc/unbound/unbound.conf.d/pi-hole.conf: private-address: fd00::/8
/etc/unbound/unbound.conf.d/pi-hole.conf: private-address: fe80::/10

```

`dig pi-hole.net @127.0.0.1 -p 5335`

```auto
dig pi-hole.net @127.0.0.1 -p 5335

; <<>> DiG 9.16.22-Raspbian <<>> pi-hole.net @127.0.0.1 -p 5335
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 55332
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;pi-hole.net. IN	A

;; Query time: 0 msec
;; SERVER: 127.0.0.1#5335(127.0.0.1)
;; WHEN: Tue Jan 11 21:03:12 CET 2022
;; MSG SIZE rcvd: 40

```

`Log after dig`

```auto
cat /var/log/unbound/unbound.log
[1641931392] unbound[17135:0] debug: subnet[module 0] operate: extstate:module_state_initial event:module_event_new
[1641931392] unbound[17135:0] info: subnet operate: query pi-hole.net. A IN
[1641931392] unbound[17135:0] debug: validator[module 1] operate: extstate:module_state_initial event:module_event_pass
[1641931392] unbound[17135:0] info: validator operate: query pi-hole.net. A IN
[1641931392] unbound[17135:0] debug: iterator[module 2] operate: extstate:module_state_initial event:module_event_pass
[1641931392] unbound[17135:0] info: resolving pi-hole.net. A IN
[1641931392] unbound[17135:0] info: processQueryTargets: pi-hole.net. A IN
[1641931392] unbound[17135:0] debug: configured stub or forward servers failed -- returning SERVFAIL
[1641931392] unbound[17135:0] debug: return error response SERVFAIL
[1641931392] unbound[17135:0] debug: validator[module 1] operate: extstate:module_wait_module event:module_event_moddone
[1641931392] unbound[17135:0] info: validator operate: query pi-hole.net. A IN
[1641931392] unbound[17135:0] debug: subnet[module 0] operate: extstate:module_wait_module event:module_event_moddone
[1641931392] unbound[17135:0] info: subnet operate: query pi-hole.net. A IN
[1641931392] unbound[17135:0] debug: cache memory msg=33294 rrset=33040 infra=3920 val=33196 subnet=41372

```

Thank you for your help !

---

<div class="post-metadata">

**Author:** ![yubiuser](https://discourse-cdn.pi-hole.net/user_avatar/discourse.pi-hole.net/yubiuser/32/12100_2.png) [@yubiuser](https://discourse.pi-hole.net/u/yubiuser)\
**Post date:** [January 11, 2022, 8:10pm UTC](https://discourse.pi-hole.net/t/unbound-servfail/52508/2 "2022-01-11T20:10:19Z")

</div>

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`

---

<div class="post-metadata">

**Author:** ![mRk](https://discourse-cdn.pi-hole.net/user_avatar/discourse.pi-hole.net/mrk/32/29148_2.png) [@mRk](https://discourse.pi-hole.net/u/mRk)\
**Post date:** [January 11, 2022, 8:58pm UTC](https://discourse.pi-hole.net/t/unbound-servfail/52508/3 "2022-01-11T20:58:51Z")

</div>

```auto
 dig pi-hole.net @127.0.0.1 -p 5335

; <<>> DiG 9.16.22-Raspbian <<>> pi-hole.net @127.0.0.1 -p 5335
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 49815
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;pi-hole.net. IN	A

;; ANSWER SECTION:
pi-hole.net. 300	IN	A	3.18.136.52

;; Query time: 399 msec
;; SERVER: 127.0.0.1#5335(127.0.0.1)
;; WHEN: Tue Jan 11 21:55:56 CET 2022
;; MSG SIZE rcvd: 56

```

Seems it's working \o/

Thank you !

---

<div class="post-metadata">

**Author:** ![system](https://discourse.pi-hole.net/uploads/default/original/3X/7/c/7c8792f649eeb921c5d2b4c41564ffa873d9a2b8.png) [@system](https://discourse.pi-hole.net/u/system)\
**Post date:** [February 1, 2022, 8:59pm UTC](https://discourse.pi-hole.net/t/unbound-servfail/52508/4 "2022-02-01T20:59:32Z")

</div>

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