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[Add] Testing DDR with macOS and iOS

Tommy Pauly <tpauly@apple.com> Fri, 10 June 2022 22:57 UTC

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From: Tommy Pauly <tpauly@apple.com>
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Date: Fri, 10 Jun 2022 15:56:58 -0700
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Subject: [Add] Testing DDR with macOS and iOS
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Hi ADD,

With the betas of iOS 16 and macOS Ventura, DDR is supported by default (no need to manually enable!). Please feel free to download these and give them a try.

This is also covered in this WWDC video: https://developer.apple.com/videos/play/wwdc2022/10079/ <https://developer.apple.com/videos/play/wwdc2022/10079/>

Best,
Tommy

> On Feb 23, 2022, at 9:52 AM, Tommy Pauly <tpauly=40apple.com@dmarc.ietf.org> wrote:
> 
> Hello ADD,
> 
> I wanted to share with the group, for anyone who’s trying to bring up Discovery of Designated Resolvers (DDR, https://datatracker.ietf.org/doc/draft-ietf-add-ddr/ <https://datatracker.ietf.org/doc/draft-ietf-add-ddr/>) on their resolvers, that there is now a way to test this functionality with the current beta of macOS 12.3 <https://developer.apple.com/news/releases/?id=02152022e>. This is not enabled by default, but is a developer option.
> 
> In Terminal, you can run the following commands:
> 
> sudo defaults write /Library/Preferences/com.apple.networkd enable_ddr -int 1
> sudo killall -9 mDNSResponder
> 
> The client will then start issuing SVCB queries for _dns.resolver.arpa, and using the results to verify resolvers and upgrade to encrypted DNS, either DoT or DoH.
> 
> Hopefully this can be a useful tool to you!
> 
> Best,
> Tommy
> 
> -- 
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> Add@ietf.org
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