Sprint IPv6

[Jens Rosenboom]

On Thu, Oct 02, 2008 at 11:12:34PM +0200, Gert Doering wrote:
> Hi,
> 
> On Thu, Oct 02, 2008 at 02:16:58PM -0400, Truman Boyes wrote:
> > This issue that you describe is not specific to IPv6, but rather is an  
> > issue with any networks that use MPLS VPNs, and do not propagate TTL.  
> 
> Except that with IPv6 over MPLS, you can't even do TTL-propagation - how
> is an IPv4+MPLS router to respond to an IPv6 traceroute?

It should place the time-exceeded message into the tunnel just as
it would do for v4 VPNs and let the egress router take care of deciding
on the proper path back to the source. Which has the "nice" side effect
of all hops of the tunnel seeming to be as far away as the egress
in terms of RTT measurements.

Or are you talking about core routers that do not implement IPv6 at all?
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