# Pihole stops working until reinstallation

**URL:** <https://discourse.pi-hole.net/t/pihole-stops-working-until-reinstallation/25296>\
**Category:** Help\
**Created:** [November 12, 2019, 11:57am UTC](https://discourse.pi-hole.net/t/pihole-stops-working-until-reinstallation/25296 "2019-11-12T11:57:48Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![DanSchaper](https://discourse-cdn.pi-hole.net/user_avatar/discourse.pi-hole.net/danschaper/32/91_2.png) [@DanSchaper](https://discourse.pi-hole.net/u/DanSchaper)\
**Post date:** [November 12, 2019, 5:34pm UTC](https://discourse.pi-hole.net/t/pihole-stops-working-until-reinstallation/25296/2 "2019-11-12T17:34:32Z")

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Check the IP assigned to the device:

* * *

[✓] IPv6 address(es) bound to the eth0 interface:  
2003:c8:df0f:3300:ceb3:69a3:740e:6001 **does not match** the IP found in /etc/pihole/setupVars.conf  
([Use IPv6 ULA addresses for Pi-hole](https://discourse.pi-hole.net/t/use-ipv6-ula-addresses-for-pi-hole/2127))  
fe80::bd13:c13b:421d:ab37 **does not match** the IP found in /etc/pihole/setupVars.conf  
([Use IPv6 ULA addresses for Pi-hole](https://discourse.pi-hole.net/t/use-ipv6-ula-addresses-for-pi-hole/2127))

^ Please note that you may have more than one IP address listed.  
As long as one of them is green, and it matches what is in /etc/pihole/setupVars.conf, there is no need for concern.

The link to the FAQ is for an issue that sometimes occurs when the IPv6 address changes, which is why we check for it.

* * *

And:

* * *

\*\*\* [DIAGNOSING]: Name resolution (IPv6) using a random blocked domain and a known ad-serving domain  
[✓] monetizer101.com is :: via localhost (::1)  
[✗] Failed to resolve monetizer101.com via Pi-hole (2003:c8:df0d:8a00:366a:9023:8a06:d037)  
[✓] doubleclick.com is 2a00:1450:4001:81b::200e via a remote, public DNS server (2001:4860:4860::8888)

* * *

Then check `/etc/hosts`

[✗] Nov 12 11:28:52 dnsmasq[14906]: bad address at /etc/hosts line 1 ([Why do I see "bad address at" in pihole.log?](https://discourse.pi-hole.net/t/why-do-i-see-bad-address-at-in-pihole-log/3972))

* * *

Lastly check your Apache modifications as they do not appear to be correct.

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_[View the full topic](https://discourse.pi-hole.net/t/pihole-stops-working-until-reinstallation/25296)._