[6bone] non-global address space for IXs

[Jeroen Massar]

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Bill Manning wrote:

> % >  *EVERY* link in the chain has to be able to
> % > participate for PMTU-D to properly function.
> % 
> % You only need to send ICMP mit *source* address in the IXP mesh and
> % this is easily possible.
> % 
> % Pity to see that the FUD that IXP addresses have to be routed is still
> % around.
> % 
> % Robert
> 
> 
> 	This snippet may be useful.  Some of us -REALLY- tried to
> 	not have non-aggregatable "holes" in the IPv6 space by 
> 	making use of IPv6 features. Unfortunately, others were unwilling
> 	to make the changes in mindset.  Link-local use at/over
> 	exchanges would have been so much nicer.  Reduced need for
> 	"special" space and all that.  Oh well.
> 
>        http://mailman.isi.edu/pipermail/6bone/2002-June/005605.html

Indeed quite interresting to see that more people seem to realize
that this approach is workable even though one person with apparently
quite a lot of knowledge doesn't seem to see my point :)
The fact that some people can't configure (read: forget the next-hop-self)
is easily bypassed ofcourse. The link-locals should be on your filter
list anyways, which is the case even when using the relaxed filtering
which is still the recommended thing for the time being.

Greets,
 Jeroen

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