Re: [manet] Encoding an IPv6 Mobile Network Prefix with PacketBB

[Alexandru Petrescu <alexandru.petrescu at gmail.com>]

Thomas Clausen wrote:
> On Jun 19, 2007, at 5:49 PM, Alexandru Petrescu wrote:
>
> > Dearlove, Christopher (UK) wrote:
> > > > I came up with the datagram I present first.
> > > I'm afraid I don't have time to comment on this.
> >
> > Thanks, I request MANET community to comment on that PAcketBB
> > encoding of the IPv6 Mobile Network PRefix - thank you.
>
> I still do not think that it is clear what it is you are trying to 
> encode, and your figure doesn't help. What is it that you are trying
> to do? In your figure, it seems that you are trying to have part of
> an address block header and then a TLV block followed by an IPv6 
> address.....then another TLV block and some padding.
>
> Doesn't look to me as this encoding would be compatible with
> packetbb, but if I understood what it was you were trying to do, then
> I am sure that it could be encoded.
>
> Have you looked at draft-ietf-manet-packetbb (here's an URL: 
> http://www.ietf.org/internet-drafts/draft-ietf-manet-packetbb-05.txt)
>  section 5 for the description of the format, and  appendix A for 
> illustrations? It should provide you with inspiration as to how you
> can encode things, once they're specified, and examples of how the
> actual layout would be in the familiar IETF-pictures.

YEs I've looked at these sections.  I have plenty of remarks on them.  I
refrain from writing remarks about the way that section is written, for
fearing of risking be not well understood.

All I need is a consensus-based PacketBB message that contains an IPv6
address with an IPv6 prefix length on it.  Just one, not two.  No
head-mid-tail and no index-start nor index-stop.

I've tried to propose one as I understand it.  Would you please remark
whether you agree with that message or not and why - thank you.

> If all you want is a single IPv6 prefix, then you'd benefit little
> from any aggregation, and a message TLV with explicit content might
> simply do the trick. But, I am not sure I understand if that is what
> you are looking for.

YEs, that is what I am looking for: a PacketBB message TLV with explicit
content, containing an IPv6 Mobile Network Prefix (an IPv6 address and
the prefix length).

Alex

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