Re: UDLR Experiment I-D and IPv6 issue

Hi Hitoshi,

On Wed, 2003-06-18 at 12:33, Hitoshi Asaeda wrote:
> > 2. IPv6 compliant
> >    Our document does not clearly define the IPv6 issues, 
> >    such as the DTCP IPv6 address. We think that we need to update the 
> >    document to comply with IPv6, at least for the DTCP v6 address. 
> >    Is there any other necessary issue for the IPv6 compliant?
> 
> For IPv6, I at this moment remember we should consider and mention
> following items:
> 1. DTCP (as you said)
> 2. GRE (rfc2784) supports only IPv4 as the delivery header.
> 3. MLD is used instead of IGMP.
> 4. RA (incl. DAD)
> 3 and 4 would be tribial (?). 

I am just wondering why you are considering IGMP here since this
protocol is not mentioned as part of the spec of RFC3077 ?

>
> but for 1 and 2, we would need to define
> something new spec.

For 1, the main issue would be to use an IPv6 delivery header for DTCP
instead of IPv4 as defined in the rfc. The current DTCP payload format
allows to advertise IPv6 FBIP. 

For 2, my undertanding of rfc2784 is that we could use IPv6 as delivery
header for GRE, although at the date rfc2784 was published, only IPv4
was used. From appendix 9:

   o IPv6 as Delivery and/or Payload Protocol

     This specification describes the intersection of GRE currently
     deployed by multiple vendors. IPv6 as delivery and/or payload
     protocol is not included in the currently deployed versions of GRE.

Does this prevent us from using IPv6 ?

> 
> Good catch.:)
> --
> Hitoshi Asaeda

Emmanuel
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