Expected Behaviour:
Reference Guide: Post-Install - Pi-hole documentation
Running Unbound on Pihole server
$ sudo systemctl status unbound
* unbound.service - Unbound DNS server
Loaded: loaded (/lib/systemd/system/unbound.service; enabled; preset: enab>
Active: active (running) since Wed 2025-04-09 14:10:49 CDT; 3 days ago
Having DNS issues:
First client request for a specific FQDN always fails
Subsequent attempts generally work
Refreshing this page boots me out of the page (happens after a few minutes)
Something wrong with my DNS settings on the Pihole server. Please HELP.
$ pihole -v
Core version is v6.0.3 (Latest: N/A)
Web version is v6.0.1 (Latest: v6.1)
FTL version is v6.0.1 (Latest: v6.1)
- Operating System (Family and Version) Debian GNU/Linux 12 (bookworm) aarch64
- Hardware Raspberry Pi 3 Model B Plus Rev 1.3
- Docker compose file or Docker run command n/a
- Docker engine version n/a
Custom DNS:
127.0.0.1#5335
8.8.8.8
208.67.220.220
| CPU: | 21.8% (load: 0.87 1.07 1.16) on 4 cores running 218 processes (48.9% used by FTL) |
|---|---|
| RAM: | 46.3% of 0.9 GB is used (30.7% used by FTL) |
| Swap: | 99.9% of 0.2 GB is used |
| Kernel: | Linux raspbari25 6.1.69-v8+ #1711 SMP PREEMPT Thu Dec 21 14:27:49 GMT 2023 aarch64 |
| Uptime: | 4 days (running since Wednesday, April 9th 2025, 14:09:20) |
| FTL: | PID 683, last restart was on Saturday, April 12th 2025, 15:09:30 |
unbound.service - Unbound DNS server
Loaded: loaded (/lib/systemd/system/unbound.service; enabled; preset: enabled)
Active: active (running) since Wed 2025-04-09 14:10:49 CDT; 3 days ago
Docs: man:unbound(8)
Process: 1429 ExecStartPre=/usr/libexec/unbound-helper chroot_setup (code=exited, status=0/SUCCESS)
Process: 1432 ExecStartPre=/usr/libexec/unbound-helper root_trust_anchor_update (code=exited, status=0/SUCCESS)
Main PID: 1434 (unbound)
Tasks: 1 (limit: 777)
CPU: 3min 24.989s
CGroup: /system.slice/unbound.service
`-1434 /usr/sbin/unbound -d -p
Apr 09 14:10:49 raspbari25 systemd[1]: Starting unbound.service - Unbound DNS server...
Apr 09 14:10:49 raspbari25 unbound[1434]: [1434:0] **warning: subnetcache: prefetch is set but not working for data originating from the subnet module cache.**
Apr 09 14:10:49 raspbari25 unbound[1434]: [1434:0] info: start of service (unbound 1.17.1).
Apr 09 14:10:49 raspbari25 systemd[1]: Started unbound.service - Unbound DNS server.
Actual Behaviour:
$ sudo pihole -up
[✓] Supported OS detected
[✓] Update local cache of available packages
[✓] Building dependency package pihole-meta.deb
[✓] Installing Pi-hole dependency package
[i] Checking for updates...
fatal: unable to access 'https://github.com/pi-hole/pi-hole.git/': Could not resolve host: github.com
Error: **Unable to update local repository.** Contact Pi-hole Support.
$ ping github.com
PING github.com (140.82.114.4) 56(84) bytes of data.
64 bytes from lb-140-82-114-4-iad.github.com (140.82.114.4): icmp_seq=1 ttl=241 time=36.6 ms
64 bytes from lb-140-82-114-4-iad.github.com (140.82.114.4): icmp_seq=2 ttl=241 time=36.2 ms
^C
--- github.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 36.166/36.391/36.616/0.225 ms
## Debug Token:
[✗] **There was an error uploading your debug log.**
* Please try again or contact the Pi-hole team for assistance.
* A local copy of the debug log can be found at: /var/log/pihole/pihole_debug.log