Re: [AVTCORE] Errata on RFC 5764 : Errata ID: 3913

[Magnus Westerlund <[e-mail]>]

On 2014-05-02 19:10, Martin Thomson wrote:
> On 2 May 2014 01:26, Magnus Westerlund <[e-mail]> wrote:
>> 1. To any in the WG: Do you really think there is an issue of
>> restricting STUN to 128 methods per class per existing RFC?
> 
> This is an alternative to what I proposed, which would leave 5764
> alone.  You need to make some allowance for this though:
> http://www.iana.org/assignments/stun-parameters/stun-parameters.xhtml#stun-parameters-2
>  (Note the range 0x800-0xFFF, which is currently unused)


Yes, and from my personal position, I think it is fine to leave RFC 5764
alone here. The 128 methods per class should be sufficient.

But I do agree that we should work to ensure that these limitations are
reflected in STUN's IANA section.

> 
>> 2. To Martin: What made you think there was an error in RFC 5764?
> 
> This:
> 
>> Formally this is a value overlap between what STUN could potentially use
>> (0-63) and what DTLS can potentially use 20-63.
> 
> I don't think that it's quite fair to say that it's a fault of STUN.
> STUN was there first, so arguably the fault lies with RFC 5764.

Agreed, but it was a decision that was discussed in the community when
it happened.

> 
> As I said, it's a minor issue.  There doesn't seem to be any need for
> the overlap, so it's probably safe to retroactively change the rules
> for STUN method registrations.
> 

I also think so. And, I think the minimal work needed here is to address
STUN's IANA rules within the TRAM WG, not also change values in RFC
5764. Therefore I would like to reject this Errata.

I will give everyone two weeks to think this over and object against my
proposal to reject the errata.

Cheers

Magnus Westerlund

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