DNS resolving stops every night at 4 o’clock

stphn17 commented 3 years ago

In raising this issue, I confirm the following (please check boxes, eg [X]) Failure to fill the template will close your issue:

[X] I have read and understood the contributors guide.
[X] The issue I am reporting can be replicated
[X] The issue I am reporting isn't a duplicate

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1

[BUG | ISSUE] Expected Behaviour: DNS resolving doesn’t stop during the night for several hours.

[BUG | ISSUE] Actual Behaviour: Every night at 4 o’clock pihole stops resolving queries for several hours. Resolving starts working again after a few hours, but it’s always at different times.

Coincidentally, 4 o’clock is the time my router restarts and receives a new public IP. However, I expect Pihole to not be concerned by this.

I recently had to set up my rpi completely new, because an update of pihole failed and I couldn’t access anything anymore. I restored (copied over the /etc/pihole directory) the previous settings and ran a pihole -r afterwards.

[BUG | ISSUE] Steps to reproduce:

have a fresh install
restore settings
run pihole -r

Log file output [if available]

https://tricorder.pi-hole.net/LkOVk0Oo/

Device specifics

Hardware Type: rPi

This template was created based on the work of udemy-dl.

DL6ER commented 3 years ago

There has been a similar bug described on the dnsmasq mailing list recently where the issue was that the Pi-hole was running on a WiFi-connected box and whenever the WiFi disconnected, they lost Internet access for a long time. Sounds very similar to me.

What happens around 4 o'clock in the morning in the file /var/log/pihole.log ? Do you see REFUSED messages in there?

stphn17 commented 3 years ago

Unfortunately not. It doesn’t show anything after connection is lost

Oct  3 04:01:27 dnsmasq[17468]: forwarded mqtt.2030.ltsapis.goog to 81.173.194.68
Oct  3 04:01:30 dnsmasq[17468]: query[PTR] 46.178.168.192.in-addr.arpa from 127.0.0.1
Oct  3 04:01:30 dnsmasq[17468]: forwarded 46.178.168.192.in-addr.arpa to 192.168.178.1
Oct  3 04:01:31 dnsmasq[17468]: query[AAAA] diagnostics.meethue.com from 192.168.178.43
Oct  3 04:01:31 dnsmasq[17468]: forwarded diagnostics.meethue.com to 81.173.194.68
Oct  3 04:01:32 dnsmasq[17468]: query[AAAA] mqtt.2030.ltsapis.goog from 192.168.178.43
Oct  3 04:01:32 dnsmasq[17468]: forwarded mqtt.2030.ltsapis.goog to 81.173.194.68
Oct  3 04:01:36 dnsmasq[17468]: query[A] diagnostics.meethue.com from 192.168.178.43
Oct  3 04:01:36 dnsmasq[17468]: forwarded diagnostics.meethue.com to 81.173.194.68
Oct  3 04:01:47 dnsmasq[17468]: query[AAAA] dec.quickconnect.to from 192.168.178.100
Oct  3 04:01:47 dnsmasq[17468]: forwarded dec.quickconnect.to to 81.173.194.68
Oct  3 04:01:47 dnsmasq[17468]: query[A] dec.quickconnect.to from 192.168.178.100
Oct  3 04:01:47 dnsmasq[17468]: forwarded dec.quickconnect.to to 81.173.194.68
Oct  3 05:41:23 dnsmasq[17468]: query[A] www.google.com from 192.168.178.43
Oct  3 05:41:23 dnsmasq[17468]: forwarded www.google.com to 81.173.194.68
Oct  3 05:41:23 dnsmasq[17468]: forwarded www.google.com to 213.168.112.60
Oct  3 05:41:23 dnsmasq[17468]: query[AAAA] time1.google.com from 192.168.178.43
Oct  3 05:41:23 dnsmasq[17468]: forwarded time1.google.com to 81.173.194.68
Oct  3 05:41:23 dnsmasq[17468]: reply www.google.com is 216.58.212.164
Oct  3 05:41:23 dnsmasq[17468]: query[A] diagnostics.meethue.com from 192.168.178.43
Oct  3 05:41:23 dnsmasq[17468]: forwarded diagnostics.meethue.com to 81.173.194.68
Oct  3 05:41:23 dnsmasq[17468]: reply time1.google.com is 2001:4860:4806::
Oct  3 05:41:23 dnsmasq[17468]: query[A] pool.ntp.org from 192.168.178.46
Oct  3 05:41:23 dnsmasq[17468]: forwarded pool.ntp.org to 81.173.194.68
Oct  3 05:41:23 dnsmasq[17468]: query[A] time1.google.com from 192.168.178.43
Oct  3 05:41:23 dnsmasq[17468]: forwarded time1.google.com to 81.173.194.68
Oct  3 05:41:23 dnsmasq[17468]: reply diagnostics.meethue.com is <CNAME>
Oct  3 05:41:23 dnsmasq[17468]: reply cluster-web.meethue.com is 34.117.13.189

Here’s journalctl -r from that time:


Oct 03 04:25:04 raspberrypi rngd[286]: stats: entropy added to kernel pool: 1322560
Oct 03 04:25:04 raspberrypi rngd[286]: stats: bits sent to kernel pool: 1322560
Oct 03 04:25:04 raspberrypi rngd[286]: stats: bits received from HRNG source: 1380064
Oct 03 04:20:02 raspberrypi CRON[29595]: pam_unix(cron:session): session closed for user root
Oct 03 04:20:01 raspberrypi CRON[29596]: (root) CMD (   PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local)
Oct 03 04:20:01 raspberrypi CRON[29595]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 04:17:01 raspberrypi CRON[29573]: pam_unix(cron:session): session closed for user root
Oct 03 04:17:01 raspberrypi CRON[29574]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Oct 03 04:17:01 raspberrypi CRON[29573]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 04:10:02 raspberrypi CRON[29529]: pam_unix(cron:session): session closed for user root
Oct 03 04:10:02 raspberrypi CRON[29530]: (root) CMD (   PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local)
Oct 03 04:10:02 raspberrypi CRON[29529]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 04:09:16 raspberrypi systemd[1]: Started Clean php session files.
Oct 03 04:09:16 raspberrypi systemd[1]: phpsessionclean.service: Succeeded.
Oct 03 04:09:15 raspberrypi systemd[1]: Starting Clean php session files...
Oct 03 04:09:01 raspberrypi CRON[29478]: pam_unix(cron:session): session closed for user root
Oct 03 04:09:01 raspberrypi CRON[29479]: (root) CMD (  [ -x /usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then /usr/lib/php/sessioncleaOct 03 04:09:01 raspberrypi CRON[29478]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 04:01:53 raspberrypi dhcpcd[306]: eth0: deleting default route via 192.168.178.1
Oct 03 04:01:53 raspberrypi dhcpcd[306]: eth0: deleting route to 192.168.178.0/24
Oct 03 04:01:53 raspberrypi avahi-daemon[285]: Interface eth0.IPv4 no longer relevant for mDNS.
Oct 03 04:01:53 raspberrypi avahi-daemon[285]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.178.3.
Oct 03 04:01:53 raspberrypi avahi-daemon[285]: Withdrawing address record for 192.168.178.3 on eth0.
Oct 03 04:01:53 raspberrypi avahi-daemon[285]: Interface eth0.IPv6 no longer relevant for mDNS.
Oct 03 04:01:53 raspberrypi avahi-daemon[285]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::e5ca:4094:e69a:c2a2.
Oct 03 04:01:53 raspberrypi avahi-daemon[285]: Withdrawing address record for fe80::e5ca:4094:e69a:c2a2 on eth0.
Oct 03 04:01:53 raspberrypi dhcpcd[306]: eth0: deleting address fe80::e5ca:4094:e69a:c2a2
Oct 03 04:01:53 raspberrypi dhcpcd[306]: eth0: carrier lost
Oct 03 04:01:53 raspberrypi kernel: smsc95xx 1-1.1:1.0 eth0: Link is Down
Oct 03 04:01:46 raspberrypi avahi-daemon[285]: Registering new address record for 192.168.178.3 on eth0.IPv4.
Oct 03 04:01:46 raspberrypi avahi-daemon[285]: New relevant interface eth0.IPv4 for mDNS.
Oct 03 04:01:46 raspberrypi avahi-daemon[285]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.178.3.
Oct 03 04:01:46 raspberrypi dhcpcd[306]: eth0: adding default route via 192.168.178.1
Oct 03 04:01:46 raspberrypi dhcpcd[306]: eth0: adding route to 192.168.178.0/24
Oct 03 04:01:46 raspberrypi dhcpcd[306]: eth0: using static address 192.168.178.3/24
Oct 03 04:01:42 raspberrypi dhcpcd[306]: eth0: soliciting an IPv6 router
Oct 03 04:01:41 raspberrypi dhcpcd[306]: eth0: probing address 192.168.178.3/24
Oct 03 04:01:41 raspberrypi avahi-daemon[285]: Registering new address record for fe80::e5ca:4094:e69a:c2a2 on eth0.*.
Oct 03 04:01:41 raspberrypi avahi-daemon[285]: New relevant interface eth0.IPv6 for mDNS.
Oct 03 04:01:41 raspberrypi avahi-daemon[285]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::e5ca:4094:e69a:c2a2.
Oct 03 04:01:41 raspberrypi dhcpcd[306]: eth0: adding address fe80::e5ca:4094:e69a:c2a2
Oct 03 04:01:41 raspberrypi dhcpcd[306]: eth0: IAID eb:cd:17:d0
Oct 03 04:01:41 raspberrypi kernel: smsc95xx 1-1.1:1.0 eth0: Link is Up - 100Mbps/Full - flow control off
Oct 03 04:01:41 raspberrypi dhcpcd[306]: eth0: carrier acquired
Oct 03 04:01:38 raspberrypi dhcpcd[306]: eth0: deleting default route via 192.168.178.1
Oct 03 04:01:38 raspberrypi dhcpcd[306]: eth0: deleting route to 192.168.178.0/24
Oct 03 04:01:38 raspberrypi avahi-daemon[285]: Interface eth0.IPv4 no longer relevant for mDNS.
Oct 03 04:01:38 raspberrypi avahi-daemon[285]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.178.3.
Oct 03 04:01:38 raspberrypi avahi-daemon[285]: Withdrawing address record for 192.168.178.3 on eth0.
Oct 03 04:01:38 raspberrypi avahi-daemon[285]: Interface eth0.IPv6 no longer relevant for mDNS.
Oct 03 04:01:38 raspberrypi avahi-daemon[285]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::e5ca:4094:e69a:c2a2.
Oct 03 04:01:38 raspberrypi avahi-daemon[285]: Withdrawing address record for fe80::e5ca:4094:e69a:c2a2 on eth0.
Oct 03 04:01:38 raspberrypi dhcpcd[306]: eth0: deleting address fe80::e5ca:4094:e69a:c2a2
Oct 03 04:01:37 raspberrypi avahi-daemon[285]: Registering new address record for fe80::e5ca:4094:e69a:c2a2 on eth0.*.
Oct 03 04:01:37 raspberrypi avahi-daemon[285]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::e5ca:4094:e69a:c2a2.
Oct 03 04:01:37 raspberrypi avahi-daemon[285]: Leaving mDNS multicast group on interface eth0.IPv6 with address 2001:4dd6:be6f:0:87b0:5cc8:bafb:239.
Oct 03 04:01:37 raspberrypi dhcpcd[306]: eth0: deleting route to 2001:4dd6:be6f::/64
Oct 03 04:01:37 raspberrypi dhcpcd[306]: eth0: deleting route to fd00::/64
Oct 03 04:01:37 raspberrypi avahi-daemon[285]: Withdrawing address record for 2001:4dd6:be6f:0:87b0:5cc8:bafb:239 on eth0.
Oct 03 04:01:37 raspberrypi avahi-daemon[285]: Withdrawing address record for fd00::470:e6d2:2974:2e2b on eth0.
Oct 03 04:01:37 raspberrypi dhcpcd[306]: eth0: deleting address 2001:4dd6:be6f:0:87b0:5cc8:bafb:239/64
Oct 03 04:01:37 raspberrypi dhcpcd[306]: eth0: deleting address fd00::470:e6d2:2974:2e2b/64
Oct 03 04:01:37 raspberrypi dhcpcd[306]: eth0: carrier lost
Oct 03 04:01:37 raspberrypi kernel: smsc95xx 1-1.1:1.0 eth0: Link is Down
Oct 03 04:01:37 raspberrypi dhcpcd[306]: eth0: fe80::e228:6dff:fe3e:6b8e is unreachable
Oct 03 04:00:51 raspberrypi dhcpcd[306]: eth0: deleting default route via fe80::e228:6dff:fe3e:6b8e
Oct 03 04:00:51 raspberrypi dhcpcd[306]: eth0: fe80::e228:6dff:fe3e:6b8e: no longer a default router
Oct 03 04:00:51 raspberrypi dhcpcd[306]: eth0: Router Advertisement from fe80::e228:6dff:fe3e:6b8e
Oct 03 04:00:02 raspberrypi CRON[29151]: pam_unix(cron:session): session closed for user root
Oct 03 04:00:01 raspberrypi CRON[29152]: (root) CMD (   PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local)

DL6ER commented 3 years ago

The following happens here:

Oct 03 04:01:37 raspberrypi dhcpcd[306]: eth0: carrier lost
Oct 03 04:01:37 raspberrypi kernel: smsc95xx 1-1.1:1.0 eth0: Link is Down

The network cable is removed (same effect as router is powered off).

Shortly after, the link is re-established

Oct 03 04:01:46 raspberrypi dhcpcd[306]: eth0: using static address 192.168.178.3/24
[...]
Oct 03 04:01:41 raspberrypi kernel: smsc95xx 1-1.1:1.0 eth0: Link is Up - 100Mbps/Full - flow control off
Oct 03 04:01:41 raspberrypi dhcpcd[306]: eth0: carrier acquired

However, the link is again lost some ten seconds later

Oct 03 04:01:53 raspberrypi dhcpcd[306]: eth0: carrier lost
Oct 03 04:01:53 raspberrypi kernel: smsc95xx 1-1.1:1.0 eth0: Link is Down

and I don't see it being re-established until 04:25:04 where your log ends.

stphn17 commented 3 years ago

It gains access again at 5:41 and then keeps it. Here’s that portion from the log.

Oct 03 06:25:01 raspberrypi CRON[30737]: (root) CMD (test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily ))
Oct 03 06:25:01 raspberrypi CRON[30736]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 06:20:02 raspberrypi CRON[30682]: pam_unix(cron:session): session closed for user root
Oct 03 06:20:01 raspberrypi CRON[30683]: (root) CMD (   PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local)
Oct 03 06:20:01 raspberrypi CRON[30682]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 06:17:02 raspberrypi CRON[30660]: pam_unix(cron:session): session closed for user root
Oct 03 06:17:01 raspberrypi CRON[30661]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Oct 03 06:17:01 raspberrypi CRON[30660]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 06:10:01 raspberrypi CRON[30603]: pam_unix(cron:session): session closed for user root
Oct 03 06:10:01 raspberrypi CRON[30604]: (root) CMD (   PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local)
Oct 03 06:10:01 raspberrypi CRON[30603]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 06:09:16 raspberrypi systemd[1]: Started Clean php session files.
Oct 03 06:09:16 raspberrypi systemd[1]: phpsessionclean.service: Succeeded.
Oct 03 06:09:15 raspberrypi systemd[1]: Starting Clean php session files...
Oct 03 06:09:01 raspberrypi CRON[30555]: pam_unix(cron:session): session closed for user root
Oct 03 06:09:01 raspberrypi CRON[30556]: (root) CMD (  [ -x /usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then /usr/lib/php/sessioncle$Oct 03 06:09:01 raspberrypi CRON[30555]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 06:00:02 raspberrypi CRON[30489]: pam_unix(cron:session): session closed for user root
Oct 03 06:00:01 raspberrypi CRON[30490]: (root) CMD (   PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local)
Oct 03 06:00:01 raspberrypi CRON[30489]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 05:56:45 raspberrypi systemd-timesyncd[204]: Synchronized to time server for the first time 162.159.200.1:123 (0.debian.pool.ntp.org).
Oct 03 05:50:02 raspberrypi CRON[30405]: pam_unix(cron:session): session closed for user root
Oct 03 05:50:01 raspberrypi CRON[30406]: (root) CMD (   PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local)
Oct 03 05:50:01 raspberrypi CRON[30405]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 05:41:36 raspberrypi dhcpcd[306]: eth0: fe80::e228:6dff:fe3e:6b8e is reachable again
Oct 03 05:41:36 raspberrypi dhcpcd[306]: eth0: fe80::e228:6dff:fe3e:6b8e is reachable again
Oct 03 05:41:28 raspberrypi dhcpcd[306]: eth0: adding default route via fe80::e228:6dff:fe3e:6b8e
Oct 03 05:41:28 raspberrypi dhcpcd[306]: eth0: fe80::e228:6dff:fe3e:6b8e is reachable again
Oct 03 05:41:28 raspberrypi dhcpcd[306]: eth0: requesting DHCPv6 information
Oct 03 05:41:28 raspberrypi dhcpcd[306]: eth0: adding route to fd00::/64
Oct 03 05:41:28 raspberrypi avahi-daemon[285]: Registering new address record for fd00::470:e6d2:2974:2e2b on eth0.*.
Oct 03 05:41:28 raspberrypi dhcpcd[306]: eth0: adding route to 2a0a:a540:6745::/64
Oct 03 05:41:28 raspberrypi dhcpcd[306]: eth0: adding address fd00::470:e6d2:2974:2e2b/64
Oct 03 05:41:28 raspberrypi avahi-daemon[285]: Withdrawing address record for fe80::e5ca:4094:e69a:c2a2 on eth0.
Oct 03 05:41:28 raspberrypi avahi-daemon[285]: Registering new address record for 2a0a:a540:6745:0:cf1e:3656:910c:5003 on eth0.*.
Oct 03 05:41:28 raspberrypi avahi-daemon[285]: Joining mDNS multicast group on interface eth0.IPv6 with address 2a0a:a540:6745:0:cf1e:3656:910c:5003.
Oct 03 05:41:28 raspberrypi avahi-daemon[285]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::e5ca:4094:e69a:c2a2.
Oct 03 05:41:28 raspberrypi dhcpcd[306]: eth0: adding address 2a0a:a540:6745:0:cf1e:3656:910c:5003/64
Oct 03 05:41:28 raspberrypi dhcpcd[306]: eth0: Router Advertisement from fe80::e228:6dff:fe3e:6b8e
Oct 03 05:41:23 raspberrypi avahi-daemon[285]: Registering new address record for 192.168.178.3 on eth0.IPv4.
Oct 03 05:41:23 raspberrypi avahi-daemon[285]: New relevant interface eth0.IPv4 for mDNS.
Oct 03 05:41:23 raspberrypi avahi-daemon[285]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.178.3.
Oct 03 05:41:23 raspberrypi dhcpcd[306]: eth0: adding default route via 192.168.178.1
Oct 03 05:41:23 raspberrypi dhcpcd[306]: eth0: adding route to 192.168.178.0/24
Oct 03 05:41:23 raspberrypi dhcpcd[306]: eth0: using static address 192.168.178.3/24
Oct 03 05:41:19 raspberrypi dhcpcd[306]: eth0: soliciting an IPv6 router
Oct 03 05:41:18 raspberrypi dhcpcd[306]: eth0: probing address 192.168.178.3/24
Oct 03 05:41:18 raspberrypi avahi-daemon[285]: Registering new address record for fe80::e5ca:4094:e69a:c2a2 on eth0.*.
Oct 03 05:41:18 raspberrypi avahi-daemon[285]: New relevant interface eth0.IPv6 for mDNS.
Oct 03 05:41:18 raspberrypi avahi-daemon[285]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::e5ca:4094:e69a:c2a2.
Oct 03 05:41:18 raspberrypi dhcpcd[306]: eth0: adding address fe80::e5ca:4094:e69a:c2a2
Oct 03 05:41:18 raspberrypi dhcpcd[306]: eth0: IAID eb:cd:17:d0
Oct 03 05:41:18 raspberrypi kernel: smsc95xx 1-1.1:1.0 eth0: Link is Up - 100Mbps/Full - flow control off
Oct 03 05:41:18 raspberrypi dhcpcd[306]: eth0: carrier acquired
Oct 03 05:40:02 raspberrypi CRON[30210]: pam_unix(cron:session): session closed for user root
Oct 03 05:40:02 raspberrypi CRON[30211]: (root) CMD (   PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local)
Oct 03 05:40:02 raspberrypi CRON[30210]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 05:39:16 raspberrypi systemd[1]: Started Clean php session files.
Oct 03 05:39:16 raspberrypi systemd[1]: phpsessionclean.service: Succeeded.
Oct 03 05:39:15 raspberrypi systemd[1]: Starting Clean php session files...
Oct 03 05:39:01 raspberrypi CRON[30161]: pam_unix(cron:session): session closed for user root
Oct 03 05:39:01 raspberrypi CRON[30162]: (root) CMD (  [ -x /usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then /usr/lib/php/sessioncle$Oct 03 05:39:01 raspberrypi CRON[30161]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 05:30:02 raspberrypi CRON[30105]: pam_unix(cron:session): session closed for user root
Oct 03 05:30:02 raspberrypi CRON[30106]: (root) CMD (   PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local)
Oct 03 05:30:02 raspberrypi CRON[30105]: pam_unix(cron:session): session opened for user root by (uid=0)
Oct 03 05:25:04 raspberrypi rngd[286]: stats: Time spent starving for entropy: (min=0; avg=0.000; max=0)us
Oct 03 05:25:04 raspberrypi rngd[286]: stats: Entropy starvations: 0

DL6ER commented 3 years ago

Your Pi-hole had no network connectivity for almost two hours. It cannot see any queries on this time as it is physically disconnected from the rest of your network. As soon as network connectivity is restored, it continues to process DNS queries.

What is the bug here?

yubiuser commented 3 years ago

I clearly see an network connectivity issue here. Maybe your router has a defect? Did you try connecting your Pi device to another port?

ghost commented 2 years ago

I've got the same problem with the AVM FRITZ!Box 6490 Cable Router from Vodafone. The problem was traced back to the router. After an upgrade to AVM FRITZ!Box 6590 Cable my problem was solved.

stphn17 commented 2 years ago

So, I tried various things now and what seems to have worked is assigning the static IP trough my router instead of assigning it in dhcpcd.conf. Maybe my config was wrong or something with IPv6 wasn’t right, because I followed the example config given in the file…

Anyhow, thank you all for the help!

pi-hole / FTL

DNS resolving stops every night at 4 o’clock #1194