Random URLs not resolving

[Ackis]

Just noticed this today - I'm getting issues with some random URLs not resolving. URLs like gnu.org, github.com, pipy.org aren't getting resolved. They're not being blocked by my pihole (that is, being resolved to 0.0.0.0) - they just aren't getting resolved to anything.

At one point I wasn't even able to upload the tricorder data because it wasn't being resolved.

The only thing I've done was disable IPv6 (after getting it working).

https://tricorder.pi-hole.net/57avej6t6e

dig gnu.org

; <<>> DiG 9.10.3-P4-Raspbian <<>> gnu.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 16609
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1452
;; QUESTION SECTION:
;gnu.org. IN A

;; Query time: 242 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Sep 20 12:34:19 MDT 2019
;; MSG SIZE rcvd: 36

nslookup gnu.org
Server:         127.0.0.1
Address:        127.0.0.1#53

** server can't find gnu.org: SERVFAIL


nslookup google.com
Server:         127.0.0.1
Address:        127.0.0.1#53

Non-authoritative answer:
Name:   google.com
Address: 172.217.14.238

[Ackis]

I solved the problem.

It was a DNS Sec issue which is why I was only getting some domains and not others. My system clock was about 5 minutes out which causes issues with that due to NTP issues. Fixed the NTP stuff (kinda), which fixed the system clock, and that fixed the DNS issues.

Unrelated, is it possible to get access to my tricorder log before it self-nukes?

I ended up rebuilding the Pi box, but neglected to save all my config files for the Pi Hole. It was an unintentional rebuild.

[DanSchaper]

Sent PM with log.