smartdns/en/docs/config/block-ipv6.md

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Disable IPV6

Currently, IPV6 has entered thousands of households. However, in some cases, IPV6 addresses need to be disabled. Smartdns supports the following ways to disable IPV6 addresses.

1. Method 1: Completely Disable IPV6

   force-AAAA-SOA yes
   

2. Method 2: Disable IPV6 of Specific Domain Name

   address /example.com/#6
   

3. Method 3: If you need to disable IPV6 queries for a specific query port (such as the second DNS), you can configure it as follows:

   bind :53 -force-aaaa-soa
   

Disable Other Query Requests

1. Smartdns supports disabling other query requests, and the corresponding parameter is force-qtype-SOA.

   force-qtype-SOA 28
   

   After force-qtype-SOA parameter is the type of DNS. The specific types can be queried from the IANA Explanation.

Additional Notes

Smartdns has the ability to automatically detect IPV6 environment. If the network environment does not support IPV6, the IPV6-related optimization functions will be automatically disabled.