Re: (sipp) SST overview paper

[William Allen Simpson <[e-mail]>]

> From: [e-mail] (Bob Gilligan)
> As promised, I have written up an overview paper explaining the Simple
> SIPP Transition (SST) proposal.  I'll send this in to the internet
> drafts editor today so that it can be entered into the archives before
> the Toronto meeting.  Send comments, questions or suggestions to me or
> the list.  We can discuss SST more at the SIPP working group meeting
> in Toronto.
>
As I have already indicated a number of suggestions to Bob that were not
incorporated, I will write up something of my own in the next couple of
days.  I tried explaning what I was looking for, but sometimes it's just
faster to write the whole thing yourself.

I was especially unhappy with the 2 "flag days":

 1) when IP addresses run out, new SIPP/IPv4 nodes can't continue to
    talk with old IPv4 nodes in the same commonwealth.  This was a
    cornerstone of IPAE that I am unhappy to see disappear.  But, I can
    live with that, as it provides an incentive for upgrading, I guess.

 2) when SIPP-only hosts show up in an area, you have to TURN OFF IPv4
    routing.  This is totally unacceptable to me.

Of course, there are other problems, such as:

 - SIPP/IPv4 routing should be a combination, with interoperation, but
   instead means IPv4 routing with SIPP encapsulation.

 - translators have to be specially deployed at SIPP boundaries, and
   need lots of configuration.  Blech.

 - SIPP-only says it "does not understand IPv4", but in reality will
   continue to support A DNS records, a special checksum calculation,
   FTP PORT commands, and who knows what else IPv4 stuff.  I think
   SIPP/IPv4 should support both, and SIPP-only just don't talk IPv4,
   even through translators.

 - I don't expect to see SIPP-only for 20 years, and so much of this
   draft is irrelevant, particularly the ::1 prefix.  Several others
   have stated this, too.

 - I think the topology is wrong.  We won't see islands of SIPP-only,
   we'll see islands of IPv4-only.  That requires a thought experiment.
   I'll just write it out in my draft.

Oh well, enough wasted time explaining, time to write.

[e-mail]
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