Re: Multi-homing (was RE: Moving backward [Re: Fourth alternative [wasRe: Moving forward ....]])

[Brian E Carpenter <brc@xxxxxxxxxxxxxx>]

I share Tony's frustration with long hiatus in multi6, but it seems
to be unstuck at the moment. I also agree that it's hard to separate
the topics, but I see no practical advantage in repatriating the
multihoming issue into this WG, which already has a diverse agenda.

  Brian

Alain Durand wrote:
> 
> Tony Hain wrote:
> 
> >This whole discussion is about multihoming, which points out the failure of
> >the approach to move the multihoming discussion into a separate WG. Multi6
> >should be closed NOW, and that work should be folded back into the IPv6 WG
> >so there can be a comprehensive approach to the issues (this is independent
> >of the fact that the thread in an Ops WG is really about rearchitecting the
> >Internet). As we stand now, all discussions about multihoming are assumed to
> >be taking place over there, so we don't recognize the address selection
> >discussion as being the same thing.
> >
> I agree that the issue discussed here is somehow related to multi-homing.
> However, there is a fundamental difference.
> 
> You are proposing to encode local reachability information into
> the address format and use address selection to prefer those addresses
> in order to enforce local traffic to stay local.
> 
> The problem is that addresses are leaking and the fact that a node
> is configured with a "local" address and it has a "local" address in its
> list
> of destination addresses does not mean that both nodes are in the
> same local "realm", i.e. there is a logical path to connect them.
> 
> So what we have here is a case where you are multihomed with
> one side that is permanently unreachable from a large portion
> of the universe.
> 
>     - Alain.
> 
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-- 
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Brian E Carpenter 
Distinguished Engineer, Internet Standards & Technology, IBM 

NEW ADDRESS <brc@zurich.ibm.com> PLEASE UPDATE ADDRESS BOOK


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