phil at philkern.de
Fri Aug 3 14:48:28 CEST 2012
On Fri, Aug 03, 2012 at 12:39:16PM +0000, Benedikt Stockebrand wrote:
> > Specifically the ones that I actually see when debugging, such as
> > echo (ping) and destination unreachable (traceroute)?
> Ping is a matter of personal preferences, or more specifically if you
> rather want to explain an external security auditor why you leave your
> network open to scanning (assuming he has the average sub-limited
> knowledge of IPv6) or if you rather have the necessary infrastructure
> at hand to diagnose and fix a network problem.
And you trade that with being unable to communicate with Teredo hosts.
Depending on what you do there's potentially a lot of Teredo traffic.
That's why echo request/reply is in the "must not filter" list in
But then I guess that Windows would actually prefer IPv4 communication
to IPv6 Teredo communication, so the legacy IP fallback might save you
in some cases.
 With Bittorrent running behind IPv4 NAT and native IPv6 it's likely
that you receive most of the data from Teredo endpoints. At
surprisingly good speeds.
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