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Re: [dnssd] WGLC for draft-ietf-dnssd-srp

Nathan Dyck <nathan@nanoleaf.me> Thu, 12 August 2021 15:19 UTC

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From: Nathan Dyck <nathan@nanoleaf.me>
To: Simon Lin <simonlin=40google.com@dmarc.ietf.org>, "dnssd@ietf.org" <dnssd@ietf.org>
Thread-Topic: [dnssd] WGLC for draft-ietf-dnssd-srp
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Archived-At: <https://mailarchive.ietf.org/arch/msg/dnssd/lrRk2wmMR1hMAVea5brfFyOWxME>
Subject: Re: [dnssd] WGLC for draft-ietf-dnssd-srp
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Hi All,

I have now properly read the draft-ietf-dnssd-srp in addition to the draft-sctl-advertising-proxy document, which my previous comments were aimed. I support it being published.

I have two smaller recommendations on draft-ietf-dnssd-srp:

  1.  The document specifies that clients must retain their key pairs in stable storage, although the equivalent requirement is not explicitly required for servers (KEY + lease time especially) as far as I could read. I believe it should be, likely somewhere in 2.3. It is not clear to me whether the records themselves are critical or just the KEY + lease. In current Thread implementations, I do not believe records are stored in stable storage.
  2.  The order of delete vs. add is specified in 2.3.1 and seems important. Is it worth also recommending a “should” case for clients in section 2.2.5.5.2.?
     *   “…in the old service being replaced by the new service.”
     *   Append: “The sequence of these instructions in the SRP update should include the delete before the add.”

Thanks,

Nathan

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Nathan Dyck
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From: dnssd <dnssd-bounces@ietf.org> on behalf of Simon Lin <simonlin=40google.com@dmarc.ietf.org>
Date: Thursday, August 12, 2021 at 8:42 AM
To: dnssd@ietf.org <dnssd@ietf.org>
Subject: Re: [dnssd] WGLC for draft-ietf-dnssd-srp
Hi,

I'd like to add my support for publishing the draft-ietf-dnssd-srp.

We have been using the OpenThread SRP implementation for Thread Border Routers for a period of time and found that this technique is vital for bridging the gap between Thread networks and the Infrastructure network.

We can also see the potential of utilizing SRP within the WiFi networks to reduce inefficient multicast traffic.

Regards,
Simon

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