Re: [siprec] Stephen Farrell's Discuss on draft-ietf-siprec-metadata-20: (with DISCUSS and COMMENT)

[Paul Kyzivat <[e-mail]>]

On 3/2/16 6:08 AM, Stephen Farrell wrote:

> (2) 6.10: Don't you need to say to use UUID version 4 with
> random numbers and to not use MAC addresses?  IOW, refer to
> RFC4122, Section 4.4 for how to generate UUIDs.

I don't think we want to restrict to the section 4.4 algorithm. SRCs may 
need quite a lot of UUIDs. There is no reason to be using a random 
number generator for each one. And there could be cases where two SRCs 
that are cooperating on recording might want to algorithmically 
synchronize their uuid generation. For both of these cases the 
name-based algorithm can work well. For that to be safe it is only 
necessary that the namespace be unique.

So I would rather not be so proscriptive about *how* the UUIDs are 
generated, as long as they avoid accidental collisions and collisions 
due to malice.

	Thanks,
	Paul