[tex-live] www.tug.org unreachable

[Denis Bitouzé]

Le 18/12/17 à 23h53, Zdenek Wagner a écrit :

> Hi all,

Hi Zdenek,

> it seems to me that the problem is at the router at position 7 in the
> traceroute output sent by Denis. Yo can see that if responds only
> once, the next two attmpts fail, and when TTL is set to 11 hops, two
> different paths are attempted. I tried to access this router just now
> and it is inaccessible. Or probably the problem is even on router
> 6 that should have never tried the next one and use another path. It
> is definitely not a problem of DNS because my computer finds the same
> IP address. So DNS spoofing is not the problem. This is my trace:
>
> $ traceroute www.tug.org
> traceroute to www.tug.org (91.121.174.77), 30 hops max, 60 byte packets
>  1  gate.czw57 (192.168.1.1)  9.945 ms  9.936 ms  9.931 ms
>  2  62-141-11-99.tmcz.cz (62.141.11.99)  10.023 ms  10.235 ms  16.212 ms
>  3  62-141-13-18.tmcz.cz (62.141.13.18)  16.271 ms  19.412 ms  23.496 ms
>  4  62.168.52.65 (62.168.52.65)  22.326 ms  24.754 ms  28.199 ms
>  5  ae-2.fra2027-ex1.gtsce.net (193.85.195.94)  35.877 ms  39.003 ms
> 41.273 ms
>  6  * * *
>  7  be103.rbx-g1-nc5.fr.eu (178.33.100.158)  60.547 ms  58.720 ms  62.512 ms
>  8  * * *
>  9  vl10.rbx-g3-a72.fr.eu (94.23.122.73)  55.899 ms  54.242 ms  56.437 ms
> 10  * * *
> 11  tug.org (91.121.174.77)  37.863 ms !X  37.069 ms !X  39.435 ms !X
>
> Now, comparing again my route with that found by Denis, I see that
> vl10.rbx-g3-a72.fr.eu is on the right path but Denis is sometimes sent
> by router #7 to a wrong direction. Both http, https, and ftp are TCP
> services and establishing a connection requires sending several
> packets. If they do not go correctly to the server, connection will
> never be established.

Many thanks for this insightful analysis!
-- 
Denis