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

On Tue, Jul 17, 2018 at 4:46 PM, Peter Thatcher <
pthatcher=40google.com@dmarc.ietf.org> wrote:

> Where is the right place to comment on draft-mdns-ice-candidates?
>

> I looked at it from an ICE WG perspective, and it seems to be that since
> (in RFC 5245), the candidate address can be a FQDN (section 15.1) you don't
> need the special steps you have in section 3.2, because a .local address is
> a FQDN (isn't it?).
>

The use of a .local signals that this is a special use name within the
context of multicast DNS (RFC 6762).  One key difference there is that the
uniqueness of a standard DNS name is derived from the hierarchical
delegation of the DNS.  Uniqueness in MDNS is achieved using a local probe
and announce method.  As Harald pointed out in the room, there are some
latency consequences to that; those might be avoided by generating probable
uniqueness in names via the UUID mechanism, but that still need to be
worked out.  That, I think means the work in 3.1 is definitely needed.

> I think the only novel thing would be to perhaps make it clear that mDNS
> should be used for the name resolution.
>
>
You might treat the special steps as redundant (since .local should signal
mDNS), but I personally think it is helpful, because it discourages
coalescing with standard DNS responses (which is permitted by 6762).

Just my personal opinion.

Ted

> On Fri, Jun 29, 2018 at 6:07 PM youenn fablet <youennf@gmail.com> wrote:
>
>> A draft describing the Safari/WebKit approach is available at
>> https://www.ietf.org/id/draft-mdns-ice-candidates-00.txt
>>
>> Eric, can you precise the kind of information you would like to have?
>> Some testing has been done to validate the approach but I do not think
>> this is representative of the actual state of the affair. Safari/WebKit is
>> not gathering any related statistic..
>>
>>    Y
>>
>> Le ven. 29 juin 2018 à 11:10, Justin Uberti <juberti=40google.com@dmarc.
>> ietf.org> a écrit :
>>
>>> I believe such data will be forthcoming from the Safari team. We are
>>> also working on this.
>>>
>>> On Fri, Jun 29, 2018 at 7:03 AM Eric Rescorla <ekr@rtfm..com
>>> <ekr@rtfm.com>> wrote:
>>>
>>>> It seems like this is something one could A/B test and measure
>>>> connection rates. Has someone done so?
>>>>
>>>> -Ekr
>>>>
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>
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