Re: Short-circuited traceroutes on FIOS

[Javier J <javier () advancedmachines us>]

> what do you do with a traceroute that looks like this

Tell you to not change IP addresses so that I can do a proper analysis on
it?
Recommend you use something other than windows?
Give you a stock tip?
The possibilities are endless.

(I'm being sarcastic)

It is shitty and I have no clue why ISPs play these games.

Rumor is that with FiOS, that so many gamers or game software was sending
out ICMP requests that it was enough traffic for them to say screw this and
block it. I don't buy that but whatever.
Just annoying.

Oh yeah, and why do I still to this day have to use a HE ipv6 tunnel?


On Thu, Dec 12, 2019 at 8:55 AM Aaron Gould <aaron1 () gvtc com> wrote:

> Yeah, and what do you do with a traceroute that looks like this….  (ip
> address intentionally changed)
>
>
>
> C:\>tracert -d -w 1 1.2.3.4
>
>
>
> Tracing route to 1.2.3.4 over a maximum of 30 hops
>
>
>
>   1     8 ms     5 ms     5 ms  96.8.191.129
>
>   2     *        *        *     Request timed out.
>
>   3     *        *        *     Request timed out.
>
>   4     *        *        *     Request timed out.
>
>   5     *        *        *     Request timed out.
>
>   6     *        *        *     Request timed out.
>
>   7     *        *        *     Request timed out.
>
>   8     *        *        *     Request timed out.
>
>  9     *        *        *     Request timed out.
>
> 10     *        *        *     Request timed out.
>
> 11     *        *        *     Request timed out.
>
> 12     *        *        *     Request timed out.
>
> 13     *        *        *     Request timed out.
>
> 14     *        *        *     Request timed out.
>
> 15     *        *        *     Request timed out.
>
> 16     *        *        *     Request timed out.
>
> 17   267 ms   202 ms     *     1.2.3.4
>
> 18   205 ms   175 ms     *     1.2.3.4
>
> 19   160 ms   233 ms     *     1.2.3.4
>
> 20   199 ms   201 ms     *     1.2.3.4
>
> 21   213 ms   206 ms     *     1.2.3.4
>
> 22   165 ms   158 ms     *     1.2.3.4
>
> 23   237 ms   158 ms     *     1.2.3.4
>
> 24   158 ms   290 ms     *     1.2.3.4
>
> 25   158 ms   160 ms   158 ms  1.2.3.4
>
>
>
> Trace complete.
>
>
>
> C:\>
>
>
>
>
>
>
>
> *From:* NANOG [mailto:nanog-bounces () nanog org] *On Behalf Of *Etienne-Victor
> Depasquale
> *Sent:* Thursday, December 12, 2019 1:18 AM
> *To:* Valdis Klētnieks
> *Cc:* nanog () nanog org
> *Subject:* Re: Short-circuited traceroutes on FIOS
>
>
>
> Traceroute is becoming more and more an expert's tool because
> interpretation of its results isn't straightforward.
>
>
>
> I had written a paper last year and mentioned its misuse in academia in
> the context of estimating the number of energy-consuming devices between a
> source and a destination.
>
> Traceroute was being used to count the number of physical router devices
> from the hop count, notwithstanding the use of MPLS in domain cores.
>
> To an external observer, this results in significant underestimation of
> the energy consumption in the path from source to destination.
>
>
>
> On Thu, Dec 12, 2019 at 12:51 AM Valdis Klētnieks <valdis.kletnieks () vt edu>
> wrote:
>
> On Wed, 11 Dec 2019 19:26:09 +0200, Saku Ytti said:
> > On Wed, 11 Dec 2019 at 19:14, Rob Foehl <rwf () loonybin net> wrote:
> >
> > > Support claims that it was a mistake, but it's also been 15+ months and
> > > it's pretty deliberate behavior.  Draw your own conclusions...
> >
> > TTL decrement issues are fairly common across multiple vendors and hw,
> > can be sw can be hw limit
>
> Yes, but you need to screw up gloriously on the decrement if you think that
> "I decremented and it's zero now" means "therefor it must have been
> addressed
> to me, so I'll send an ECHO REPLY instead of TTL EXCEEDED".
>
>
>
>
> --
>
> Ing. Etienne-Victor Depasquale
> Assistant Lecturer
> Department of Communications & Computer Engineering
> Faculty of Information & Communication Technology
> University of Malta
>
> Web. https://www.um.edu.mt/profile/etiennedepasquale