Sprint IPv6

[Gert Doering]

Hi,

On Mon, Oct 06, 2008 at 03:39:59PM +0200, Jens Rosenboom wrote:
> On Thu, Oct 02, 2008 at 11:12:34PM +0200, Gert Doering wrote:
> > 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.

Which isn't overly useful in figuring out *where* a given path breaks...

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

As well :)

Gert Doering
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