[ipv6hackers] Some stats on IPv6 fragments and EH filtering on the Internet
fgont at si6networks.com
Tue Nov 5 02:39:59 CET 2013
On 11/04/2013 04:55 PM, Marc Blanchet wrote:
> Le 2013-11-04 à 16:50, Fernando Gont <fernando at gont.com.ar> a écrit
>> On 11/04/2013 04:10 PM, Marc Blanchet wrote:
>>> Fernando, clarification question (since I was not at IEPG):
>>> define "failure" in your slides?
>> Probe packets do not get to the intended destination.
> ok. your presentation says that you used a single vantage point. Do
> you know where the filtering happened?
> Is it possible that it could
> be "not far from you", i.e. maybe your upstream provider was
> filtering on some routers to some destination, and not filtering for
> some other routers for some other destinations (i.e. different
> peers). That might not be the case, I'm just trying to get a better
> understanding of your results.
Certainly more testing (such as identifying who's dropping the packets)
would be useful.
My guess is that' the filtering is not really happening close to the
>>> It might look a dumb question, but I just want to make sure. Is
>>> failure that you don't get back a reply packet? or you get/don't
>>> get ICMP parameter problem or ?
>> I didn't check whether an ICMPv6 error comes back -- but I'll do.
> That would be very helpful to me. Because I consider differently the
> failures depending on that data.
mm... different in what respect?
Certainly, receiving some sort of error message is useful (e.g. see RFC
5461)... but.. other than that, a packet drop is a packet drop.
e-mail: fgont at si6networks.com
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