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Re: [rtcweb] IP handling: Using mDNS names for host candidates

Ted Hardie <ted.ietf@gmail.com> Tue, 12 June 2018 18:56 UTC

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From: Ted Hardie <ted.ietf@gmail.com>
Date: Tue, 12 Jun 2018 20:55:59 +0200
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To: Justin Uberti <juberti=40google.com@dmarc.ietf.org>
Cc: RTCWeb IETF <rtcweb@ietf.org>, yfablet@apple.com, Sean Turner <sean@sn3rd.com>
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Subject: Re: [rtcweb] IP handling: Using mDNS names for host candidates
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On Tue, Jun 12, 2018 at 2:40 AM, Justin Uberti <
juberti=40google.com@dmarc.ietf.org> wrote:

>
> This is a significant improvement and I think we will want to incorporate
> this suggestion. Is this something we could do as part of this WGLC, or
> should we look for another option?
>
>
Without having cleared this with Cullen or Sean, my personal chair-hat
opinion is that we can do this in WGLC.  If a new technical solution is
found during WG last call, I see no reason not to incorporate it.

That said, I see two no-hats issues that will want pretty strong text.  The
first is that these are really UUIDs, not traditional mDNS names.  We'll
need text to strongly discourage the re-use of an existing mDNS name, since
those can leak other information.  Second, we'll need text on what to do if
this name can't be registered or resolved in a particular environment (not
every network supports mDNS, after all).  Does it go back to the previous
Mode 2 behavior, or skip private addresses entirely?  I think the right
idea is "go back to the previous Mode 2 behavior" personally, but text on
it one way or the other is required.

regards,

Ted




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