I’m pulling my hair out over this. I’ve got a proxmox homelab, an LXC running technitium installed from TTeck’s script.

The DNS server is also doing DHCP for my network. I have an authoritative zone for ‘.lan’

I can get NS, SOA, TXT records from the DNS server, but no A records! The DNS query logs show that it gives an answer, and if I am on the DNS server itself I get an answer, but no other machines on the network hear the reply.

I think this means the DNS server is working properly. There are no FWs in the way as I can resolve other types.

Where else can I look, or how can I diagnose this? I am completely at a loss.

  • truthfultemporarily@feddit.orgEnglish
    7·
    12 hours ago

    Here is how I would diagnose (I’m assuming you have Linux / WSL on a client)

    1. Check the DNS record is actually set (yes do it again)
    2. Do these steps on the client:
    3. dig $domain check which server answered
    4. dig a $domain should give a record
    5. dig a $domain @server to make sure you’re querying the right server

    If none work, probably network issue (DNS boind to wrong IP, firewall, etc)

    If 3 and 5 work but 4 doesn’t, your DNS isn’t authorative.

    If only 5 works DNS settings on the client is wrong.

    • Bluesheep@lemmy.worldOPEnglish
      2·
      11 hours ago

      Thanks for giving it some thought!

      I have been testing using dig @192.168.0.249 study.lan

      3, 4, and 5 work for TXT, NS and SOA but doesn’t work for A records. I think this rules out a simple network issue?

      • truthfultemporarily@feddit.orgEnglish
        1·
        6 hours ago

        Just to be sure you do dig A @server $domain (with the “A”) and can confirm the following

        SERVER is your server

        ;; ANSWER SECTION is empty (or doesn’t exist)

        ;; AUTHORITY SECTION mentions your local DNS server

        Also check

        dig NS @server $domain

        Is your server in the answer section?