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Is it possible to return only the ipv6 address when having both ipv4 and ipv6 addresses #3612

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opened 2026-03-04 03:57:53 -05:00 by deekerman · 1 comment

deekerman commented

2026-03-04 03:57:53 -05:00

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Originally created by @keeker233 on GitHub (Apr 9, 2022).

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I checked the documentation and found no answer
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Problem Description

In the campus network environment, I hope to use ipv6 and use ipv6 as much as possible, but most software and equipment are still given priority to ipv4 in use. Can I set in adguardhome to only return ipv6 addresses for dual-stack URLs which have both ipv4 address and ipv6 address, so that the device can access it as a pure ipv6 website

Proposed Solution

Add an option to adguardhome to return only ipv4 or ipv6 addresses if the url has both ipv4 and ipv6 addresses

Alternatives Considered

Additional Information

At present, I manually set the ipv6 address in dns rewrite, but I cannot easily find the parsed ipv6 address in the query record. Its response is only represented by NOERROR. Is there any convenient way to find the parsed ipv6 address? ipv6 address?

Originally created by @keeker233 on GitHub (Apr 9, 2022). Have a question or an idea? Please search it [on our forum](https://github.com/AdguardTeam/AdGuardHome/discussions) to make sure it was not yet asked. If you cannot find what you had in mind, please [submit it here](https://github.com/AdguardTeam/AdGuardHome/discussions/new). ### Prerequisites Please answer the following questions for yourself before submitting an issue. **YOU MAY DELETE THE PREREQUISITES SECTION.** - [x] I am running the latest version - [x] I checked the documentation and found no answer - [ ] I checked to make sure that this issue has not already been filed ### Problem Description  In the campus network environment, I hope to use ipv6 and use ipv6 as much as possible, but most software and equipment are still given priority to ipv4 in use. Can I set in adguardhome to only return ipv6 addresses for dual-stack URLs which have both ipv4 address and ipv6 address, so that the device can access it as a pure ipv6 website ### Proposed Solution  Add an option to adguardhome to return only ipv4 or ipv6 addresses if the url has both ipv4 and ipv6 addresses ### Alternatives Considered  ### Additional Information  At present, I manually set the ipv6 address in dns rewrite, but I cannot easily find the parsed ipv6 address in the query record. Its response is only represented by NOERROR. Is there any convenient way to find the parsed ipv6 address? ipv6 address?

deekerman closed this issue

2026-03-04 03:58:01 -05:00

deekerman commented

2026-03-04 03:58:10 -05:00

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@fernvenue commented on GitHub (Apr 9, 2022):

AdGuardHome can't and shouldn't do that.

As we know, DNS Server's response is based on the client's request type:

Send a request for type A, AdGuardHome will and should response with IPv4 address.
Send a request for type AAAA, AdGuardHome will and should response with IPv6 address.

So this is clearly a client behavior, you should set Prefer IPv6 on your device or application. And what AdGuardHome can do is drop all request for a specific type, just like aaaa_disabled in AdGuardHome.yaml now:

aaaa_disabled — Respond with an empty answer to all AAAA requests. --AdGuardHome Wiki

By the way, it might make sense to change this feature to a specific type that can be set.

@fernvenue commented on GitHub (Apr 9, 2022): **AdGuardHome can't and shouldn't do that.** As we know, DNS Server's response is based on the client's request type: - Send a request for type `A`, AdGuardHome will and should response with IPv4 address. - Send a request for type `AAAA`, AdGuardHome will and should response with IPv6 address. So this is clearly a client behavior, you should set Prefer IPv6 on your device or application. And what AdGuardHome can do is drop all request for a specific type, just like `aaaa_disabled` in `AdGuardHome.yaml` now: > `aaaa_disabled` — Respond with an empty answer to all AAAA requests. --[AdGuardHome Wiki](https://github.com/AdguardTeam/AdGuardHome/wiki/Configuration#configuration-file) By the way, it might make sense to change this feature to a specific type that can be set.

deekerman referenced this issue

2026-03-04 05:05:40 -05:00

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