[outages] ipv6 packet loss in DEN for comcast?

[Hugo Slabbert]

There is no loss that persists through to the endpoint in that trace. This
is standard control plane rate limiting at intermediate hops.

https://archive.nanog.org/meetings/nanog47/presentations/Sunday/RAS_Traceroute_N47_Sun.pdf


On Tue, Apr 18, 2023, 12:56 Paul Ebersman via Outages <outages at outages.org>
wrote:

> I'm seeing heavy packet loss within DEN metro for comcast on ipv6 (but
> not ipv4).
>
> mtr to my mail host follows. packet loss the same hop for any site on
> the internet i try to reach via ipv6.
>
> anyone else seeing issues?
>
> HOST: localhost.                                       Loss%   Snt
> Last   Avg  Best  Wrst StDev
>   1.|-- xxxxxxxxxxxxxxxxx                                 0.0%    10 4.1
>  4.8   2.5  12.9   2.9
>   2.|-- xxxxxxxxxxxxxxxxx                                 0.0%    10 14.2
> 15.4  13.1  20.2   2.2
>   3.|-- ae-251-1203-rur01.monument.co.denver.comcast.net  0.0%    10
> 15.9  20.7  13.2  36.0   8.2
>   4.|-- ae-12-ar01.denver.co.denver.comcast.net           0.0%    10
> 23.5  20.6  14.9  32.9   5.4
>   5.|-- 2001:558:1c0:1058::1                             40.0%    10 15.4
> 18.1  14.8  27.3   4.8
>   6.|-- be-36031-cs03.1601milehigh.co.ibone.comcast.net  90.0%    10
> 15.8  15.8  15.8  15.8   0.0
>   7.|-- be-1314-cr14.1601milehigh.co.ibone.comcast.net   40.0%    10
> 17.8  17.2  16.1  17.8   0.6
>   8.|-- be-303-cr14.champa.co.ibone.comcast.net          70.0%    10
> 18.9  21.1  18.4  26.0   4.2
>   9.|-- be-1214-cs02.champa.co.ibone.comcast.net         60.0%    10
> 16.8  17.3  16.7  17.8   0.6
>  10.|-- be-1212-cr12.champa.co.ibone.comcast.net         30.0%    10
> 17.2  19.4  15.7  25.5   3.3
>  11.|-- be-301-cr11.sunnyvale.ca.ibone.comcast.net        0.0%    10
> 42.2  42.1  39.6  43.8   1.3
>  12.|-- ???                                              100.0    10 0.0
>  0.0   0.0   0.0   0.0
>  13.|-- be-3202-pe02.529bryant.ca.ibone.comcast.net       0.0%    10
> 42.6  43.4  40.7  48.3   2.3
>  14.|-- 2001:559::14e                                     0.0%    10 42.7
> 43.5  41.3  48.8   2.1
>  15.|-- mail.dragon.net                                   0.0%    10
> 42.1  42.7  40.7  47.5   1.9
>
>
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