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dnsdist - Feature request: DNS-over-TLS dual certificate (RSA+EC) support. #6450

Eihrister opened this issue Apr 5, 2018 · 0 comments


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@Eihrister Eihrister commented Apr 5, 2018

  • Program: dnsdist
  • Issue type:Feature request

Short description

dnsdist should allow alternative certificates for different algorithms (think RSA) simultaneously.


Clients should be able to choose what they support (EC if supported, or RSA otherwise, for example). As it currently is, we can only either use RSA, or EC, but not both.


Many other pieces of software (nginx/Apache/Postfix/sendmail/Dovecot/Courier) have the ability to offer multiple certificates for different algorithms simultaneously. The client can then take its pick. I believe that dnsdist should follow suit.


I am not sure how greatly EC is supported in DNS-over-TLS clients, but considering it's a fairly new thing, I'm pretty sure that all clients support EC. Which, I admit, might make this less of a priority.

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