Re: [dnssd] Iotdir last call review of draft-ietf-dnssd-prireq-04

100% agree with your first point.

Regarding your second point, one of the classic use cases for dns-sd privacy is a pacemaker.  This is a battery-operated device, but the user should not have to broadcast the fact that they have a pacemaker installed whenever they are walking around out in the world.

So if you think that the requirements really do not address the power consumption issue, that is something that should be added to the document as a requirement, rather than saying that in such cases privacy can be optional.

> On Feb 13, 2020, at 9:31 AM, Samita Chakrabarti via Datatracker <noreply@ietf.org> wrote:
> 
> Reviewer: Samita Chakrabarti
> Review result: Ready with Nits
> 
> I have reviewed draft-ietf-dnssd-prireq-04.
> 
> The document is informative and clear with a few editorial nits on section 4.1
> through 4.3.
> 
> I have reviewed from the IoT devices perspective  and most likely for the
> consumer devices that might be present in the public network and are using
> shared network technologies (wireless or wired). The threat model are
> applicable to them. Section 3.1 describes implications for wearable and  server
> related privacy issue.  Perhaps a small paragraph might be added in this
> section or in the introduction calling out possible privacy and security
> threats on personal IoT devices in the public places ( that might act as a
> dns-sd client).
> 
> At the same time, considering limited processing capabilities, battery saving
> concern considerations, privacy related extra processing of messages from the
> dns-sd server should not be mandated for the IoT devices. Depending on the
> device capabilities, the feature can be configurable and the user can turn
> on/off  at their need; additionally some iot devices may not care about the
> privacy at all.
> 
> So, a few additional lines on IoT implications for the threat model and yet
> flexibility of implementation of the dns-sd IOT client may be mentioned in the
> document to clarify the IoT devices in the shared wireless/wired medium.
> 
> 
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