DNS Probe Possible, dig cannot find servers, problem happens intermittently

Zephyrus

3/21/24, 12:41 PM

Ubuntu 22.04

I first discovered this problem when my Brave browser would occasionally report DNS_PROBE_POSSIBLE. However, it isn't just a browser issue. It happens at unpredictable times and there is no way to know how long it will last. When it happens, I can't use the Brave Browser or dig, but my Signal messaging app still works.

$ dig google.com

; <<>> DiG 9.18.1-1ubuntu1.3-Ubuntu <<>> google.com
;; global options: +cmd
;; connection timed out; no servers could be reached

I had been using Stubby, so I thought maybe that might be intermittently causing the problem. So I shut down Stubby and switched back to systemd-resolved. That did not work.

Another computer on my local network (which is running Debian) still has working DNS, so my ISP's DNS server is still working.

I also run tor on this system. I shut down tor, but that did not work either.

But here is the weird thing. I can access the Internet with the Tor Browser which is how I am posting this question. I assume the Tor Browser uses its own DNS servers or something. But I need a working DNS system and I still have not figured out what is causing this.

I am not using a VPN or iptables at this time.

Does anyone know what the problem could be, how to fix it or how I might figure out what is causing it?

155

0 + 0

dns

tor

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: DNS Probe Possible, dig cannot find servers, problem happens intermittently

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.