SDNS stamps as Bootstrap servers

[ammnt]

Prerequisites

• I have checked the Wiki and Discussions and found no answer

• I have searched other issues and found no duplicates

• I want to request a feature or enhancement and not ask a question

Description

Hello,

I want to use SDNS stamps as bootstrap servers with the AdGuard DoH encrypted endpoints and their IP. It is not working for me and I can not pass check (I use DoH3 there):

Please take a look and let's consider it this function🎅🏼

Thank you.
Best regards!

[gregtwallace]

I think it would be more prudent to disable bootstrapping servers if they're not needed. That is, if the upstream servers all contain an IP, there is no need for a bootstrapping server.

I assume you're using the same servers as your main upstream resolvers. In that case, AdGuard should be able to connect and validate the SDNS stamps without a bootstrap server. Simply query the IP and verify the returned cert is valid and matches the specified domain name.