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DNS loop with AdGuard LXC #2090

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opened 2025-11-20 05:23:12 -05:00 by saavagebueno · 3 comments
saavagebueno commented 2025-11-20 05:23:12 -05:00
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Originally created by @rollodroid on GitHub (Oct 15, 2025).

✅ Have you read and understood the above guidelines?

yes

📜 What is the name of the script you are using?

AdGuard Home LXC

📂 What was the exact command used to execute the script?

bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/ct/adguard.sh)"

⚙️ What settings are you using?

  • Default Settings
  • Advanced Settings

🖥️ Which Linux distribution are you using?

Debian 12

📈 Which Proxmox version are you on?

pve-manager/8.3.3/f157a38b211595d6 (running kernel: 6.8.12-15-pve)

📝 Provide a clear and concise description of the issue.

The DNS settings are "use host settings" It is necessesary to use no DNS at all because adguard uses whatever is set as upstream, even when not set in the webinterface. This can create DNS loops for some percentage of the requests and response times of several seconds instead of ms for that requests.

🔄 Steps to reproduce the issue.

Set the adguard server as DNS server in the router, set the router as DNS for clients via dhcp (typically), set some upstream servers on the internet as upstream in adguard. Set the container to use the dhcp setting (the conttainer itself or inherited from the host)
After some time of usage, some requests are upsreamed to the router ip.

❌ Paste the full error output (if available).

Image

🖼️ Additional context (optional).

No response

Originally created by @rollodroid on GitHub (Oct 15, 2025). ### ✅ Have you read and understood the above guidelines? yes ### 📜 What is the name of the script you are using? AdGuard Home LXC ### 📂 What was the exact command used to execute the script? bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/ct/adguard.sh)" ### ⚙️ What settings are you using? - [x] Default Settings - [ ] Advanced Settings ### 🖥️ Which Linux distribution are you using? Debian 12 ### 📈 Which Proxmox version are you on? pve-manager/8.3.3/f157a38b211595d6 (running kernel: 6.8.12-15-pve) ### 📝 Provide a clear and concise description of the issue. The DNS settings are "use host settings" It is necessesary to use no DNS at all because adguard uses whatever is set as upstream, even when not set in the webinterface. This can create DNS loops for some percentage of the requests and response times of several seconds instead of ms for that requests. ### 🔄 Steps to reproduce the issue. Set the adguard server as DNS server in the router, set the router as DNS for clients via dhcp (typically), set some upstream servers on the internet as upstream in adguard. Set the container to use the dhcp setting (the conttainer itself or inherited from the host) After some time of usage, some requests are upsreamed to the router ip. ### ❌ Paste the full error output (if available). <img width="606" height="227" alt="Image" src="https://github.com/user-attachments/assets/6a68f700-3bf8-4cca-9c5c-6a7fe2f55509" /> ### 🖼️ Additional context (optional). _No response_
saavagebueno added the bug label 2025-11-20 05:23:12 -05:00
saavagebueno commented 2025-11-20 05:23:12 -05:00
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@MickLesk commented on GitHub (Oct 15, 2025):

Ive exact the Same config running since over 2 years. Never get Problems. Issue should Not exist Here. Script Work as expected. If you think, something is wrong -> adguard Home Repo.

@MickLesk commented on GitHub (Oct 15, 2025): Ive exact the Same config running since over 2 years. Never get Problems. Issue should Not exist Here. Script Work as expected. If you think, something is wrong -> adguard Home Repo.
saavagebueno commented 2025-11-20 05:23:12 -05:00
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@rollodroid commented on GitHub (Oct 15, 2025):

The issue exists, I even provided a screenshot that tells the upstream 192.168.188.1 is used, which is not configured:

Image

The issue might not appear for you because it depends on other settings, which in your case may not inject the addidtional upstream. But the issue is still real!

@rollodroid commented on GitHub (Oct 15, 2025): The issue exists, I even provided a screenshot that tells the upstream 192.168.188.1 is used, which is not configured: <img width="520" height="269" alt="Image" src="https://github.com/user-attachments/assets/0cbe2c14-cc3f-4bae-8808-daf582c98b4e" /> The issue might not appear for you because it depends on other settings, which in your case may not inject the addidtional upstream. But the issue is still real!
saavagebueno commented 2025-11-20 05:23:13 -05:00
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@MickLesk commented on GitHub (Oct 15, 2025):

Then Report it to adguard. We only deploy there deb File. We dont Change any Things at this

@MickLesk commented on GitHub (Oct 15, 2025): Then Report it to adguard. We only deploy there deb File. We dont Change any Things at this
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Reference: SVI/ProxmoxVE#2090
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