# DietPi-Login DNS Resolver Not Working
**URL:** https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861
**Category:** Troubleshooting
**Created:** [18 February 2020 23:09 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861 "2020-02-18T23:09:45Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@gamingunfinished](https://dietpi.com/forum/u/gamingunfinished)
#### Post date: [18 February 2020 23:09 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/1 "2020-02-18T23:09:45Z")
Whenever my Pi attempts to login I get an error message saying that the DNS resolver failed. My internet is working.
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [18 February 2020 23:15 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/2 "2020-02-18T23:15:35Z")
Hi,
pls can you past the correct error message or a screen shot!
---
### Author:  [@gamingunfinished](https://dietpi.com/forum/u/gamingunfinished)
#### Post date: [18 February 2020 23:46 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/3 "2020-02-18T23:46:20Z")
I tried it with cloudflare as well.
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [18 February 2020 23:50 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/4 "2020-02-18T23:50:54Z")
was this is a fresh installation? Do you use IPv6 on your network?
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### Author:  [@gamingunfinished](https://dietpi.com/forum/u/gamingunfinished)
#### Post date: [18 February 2020 23:54 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/5 "2020-02-18T23:54:19Z")
Yes, I just installed this and I use ipv6.
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### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [18 February 2020 23:58 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/6 "2020-02-18T23:58:05Z")
ok pls try to deactivate IPv6 on your dietpi system, Let’s see if IPv4 is working. got to dietpi.txt on your SD card and change the following.
```nohighlight
# IPv6
CONFIG_ENABLE_IPV6=0
```
---
### Author:  [@gamingunfinished](https://dietpi.com/forum/u/gamingunfinished)
#### Post date: [19 February 2020 00:05 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/7 "2020-02-19T00:05:25Z")
It’s still not working.
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [19 February 2020 00:08 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/8 "2020-02-19T00:08:53Z")
pls can you past output of following
```nohighlight
ping -4 -c 1 dns9.quad9.net
ping -4 -c 1 9.9.9.9
ping -c 1 dns9.quad9.net
ping -c 1 9.9.9.9
```
---
### Author:  [@gamingunfinished](https://dietpi.com/forum/u/gamingunfinished)
#### Post date: [19 February 2020 00:11 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/9 "2020-02-19T00:11:10Z")
```nohighlight
```
root@DietPi:~# ping -4 -c 1 [dns9.quad9.net](http://dns9.quad9.net)
PING [dns9.quad9.net](http://dns9.quad9.net) (9.9.9.9) 56(84) bytes of data.
64 bytes from [dns9.quad9.net](http://dns9.quad9.net) (9.9.9.9): icmp\_seq=1 ttl=54 time=53.3 ms
— [dns9.quad9.net](http://dns9.quad9.net) ping statistics —
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 53.303/53.303/53.303/0.000 ms
root@DietPi:~# ping -4 -c 1 9.9.9.9
PING 9.9.9.9 (9.9.9.9) 56(84) bytes of data.
64 bytes from 9.9.9.9: icmp\_seq=1 ttl=54 time=182 ms
— 9.9.9.9 ping statistics —
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 181.721/181.721/181.721/0.000 ms
root@DietPi:~# ping -c 1 [dns9.quad9.net](http://dns9.quad9.net)
PING [dns9.quad9.net](http://dns9.quad9.net)(2620:fe::fe:9 (2620:fe::fe:9)) 56 data bytes
ping -c 1 9.9.9.9
— [dns9.quad9.net](http://dns9.quad9.net) ping statistics —
1 packets transmitted, 0 received, 100% packet loss, time 0ms
root@DietPi:~# ping -c 1 9.9.9.9
PING 9.9.9.9 (9.9.9.9) 56(84) bytes of data.
64 bytes from 9.9.9.9: icmp\_seq=1 ttl=54 time=206 ms
— 9.9.9.9 ping statistics —
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 205.500/205.500/205.500/0.000 ms
```nohighlight
```
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [19 February 2020 00:20 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/10 "2020-02-19T00:20:01Z")
are you sure you deactivated IPv6 on your DietPi system? Because your system is still trying to access some IPv6 address, which should not be the case if IPv6 was disabled.
```nohighlight
root@DietPi:~# ping -c 1 dns9.quad9.net
PING dns9.quad9.net(2620:fe::fe:9 (2620:fe::fe:9)) 56 data bytes
ping -c 1 9.9.9.9
--- dns9.quad9.net ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
```
pls can you past output of
```nohighlight
cat /DietPi/dietpi.txt |grep CONFIG_ENABLE_IPV6
ip a
```
---
### Author:  [@gamingunfinished](https://dietpi.com/forum/u/gamingunfinished)
#### Post date: [19 February 2020 00:22 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/11 "2020-02-19T00:22:42Z")
```nohighlight
```
root@DietPi:~# cat /DietPi/dietpi.txt |grep CONFIG\_ENABLE\_IPV6
CONFIG\_ENABLE\_IPV6=0
root@DietPi:~# ip a
1: lo: \ mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid\_lft forever preferred\_lft forever
inet6 ::1/128 scope host
valid\_lft forever preferred\_lft forever
2: eth0: \ mtu 1500 qdisc pfifo\_fast state UP group default qlen 1000
link/ether b8:27:eb:62:d5:fd brd ff:ff:ff:ff:ff:ff
inet 192.168.1.69/24 brd 192.168.1.255 scope global eth0
valid\_lft forever preferred\_lft forever
inet6 2606:a000:1408:8269:ba27:ebff:fe62:d5fd/64 scope global dynamic mngtmpaddr
valid\_lft 604509sec preferred\_lft 604509sec
inet6 fe80::ba27:ebff:fe62:d5fd/64 scope link
valid\_lft forever preferred\_lft forever
```nohighlight
```
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [19 February 2020 00:25 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/12 "2020-02-19T00:25:39Z")
did you reboot your system after you disabled IPv6? If not, pls do. Because you still have an IPv6 address assigned
---
### Author:  [@gamingunfinished](https://dietpi.com/forum/u/gamingunfinished)
#### Post date: [19 February 2020 00:27 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/13 "2020-02-19T00:27:57Z")
yes, I did. Should I disable ipv6 on my router?
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [19 February 2020 00:31 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/14 "2020-02-19T00:31:05Z")
you can try, It’s strange that you have IPv6 addresses on your eth0 adaptor
2: eth0: \ mtu 1500 qdisc pfifo\_fast state UP group default qlen 1000
link/ether b8:27:eb:62:d5:fd brd ff:ff:ff:ff:ff:ff
inet 192.168.1.69/24 brd 192.168.1.255 scope global eth0
valid\_lft forever preferred\_lft forever
inet6 2606:a000:1408:8269:ba27:ebff:fe62:d5fd/64 scope global dynamic mngtmpaddr
valid\_lft 604509sec preferred\_lft 604509sec
inet6 fe80::ba27:ebff:fe62:d5fd/64 scope link
valid\_lft forever preferred\_lft forever
---
### Author:  [@gamingunfinished](https://dietpi.com/forum/u/gamingunfinished)
#### Post date: [19 February 2020 00:34 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/15 "2020-02-19T00:34:23Z")
That worked. I’d like to keep ipv6 on though, is there another way to turn it off for the Pi?
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [19 February 2020 00:39 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/16 "2020-02-19T00:39:05Z")
you can go to
1. dietpi-config tool
2. 7 : Network Options: Adapters
3. IPv6 : [Off]
this should deactivate IPv6 on your SBC. But this is the same setting as CONFIG\_ENABLE\_IPV6=0 within dietpi.txt file. If IPv6 was disabled, the command ip a should return an IPv4 address only.
---
### Author:  [@gamingunfinished](https://dietpi.com/forum/u/gamingunfinished)
#### Post date: [19 February 2020 00:47 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/17 "2020-02-19T00:47:07Z")
Thanks for your help
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [19 February 2020 00:48 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/18 "2020-02-19T00:48:13Z")
yw 🕶
---
### Author:  [@iDopamin3](https://dietpi.com/forum/u/iDopamin3)
#### Post date: [14 December 2020 13:27 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/19 "2020-12-14T13:27:47Z")
I made an account just to say thank you, the IPv6 was holding me back!
---
### Author:  [@dvd741](https://dietpi.com/forum/u/dvd741)
#### Post date: [2 January 2022 00:46 UTC](https://dietpi.com/forum/t/dietpi-login-dns-resolver-not-working/3861/20 "2022-01-02T00:46:44Z")
I have the same issue. Sort of… Sometimes.
Ping -c 1 [dns9.quad.net](http://dns9.quad.net)
Sometimes gives 100% packet loss.
Sometimes gives 1 received.
Iperf3 to a host on my network runs fine (speeds close to 1Gbps)
Do you have any idea what might be the cause? (Rock Pi 4B 1.72 on Dietpi with kernel 5.10.63)
P.s. IPV6 is disabled and ip a shows no ipv6 ip
Could it be a dns problem? And how should I investigate the cause? :-/
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