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Ticket ID: SIXXS #7635746 Ticket Status: Remote Problem PoP: deham02 - Easynet (Hamburg)
routing problem?
![[de]](/s/countries/de.gif) Carmen Sandiego on Friday, 17 August 2012 17:36:03
Hi,
I'm trying to resolve a communication problem between my server (2001:6f8:1ccd::1) / tunnel T25507 and a remote host (2607:f238:2::13).
The remote host is reacheable just fine from another tunnel provided by another POP. Other hosts (like google.com or heise.de) are reacheable without a problem from my host/tunnel.
A ping6 to the problematic host gets a timeout and a traceroute6 shows the following:
# traceroute6 -n 2607:f238:2::13
traceroute to 2607:f238:2::13 (2607:f238:2::13), 30 hops max, 80 byte packets
1 2001:6f8:1c00:18a::1 29.060 ms 29.421 ms 29.408 ms
2 2001:6f8:891:1::c2e9:c721 29.393 ms 29.378 ms 29.363 ms
3 2001:6f8:891:1::c2e9:c725 29.905 ms 30.175 ms 30.164 ms
4 2001:6f8:1:0:87:86:69:214 29.845 ms * *
5 2001:6f8:1:0:87:86:77:83 29.800 ms * *
6 * * *
7 * * *
8 * * *
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 2001:6f8:1:0:87:86:77:71 43.251 ms !N 43.225 ms !N 43.210 ms !N
This leads me to think that there's a routing problem at deham02/Easynet.
Kind regards and TIA,
Juri
State change: remoteproblem
The state of this ticket has been changed to remoteproblem
routing problem?
I am unable to reach 2607:f238:2::13 from a variety of hosts, as such, please contact that ISP and ask them to set up better peering.
routing problem?
Carmen Sandiego on Thursday, 23 August 2012 21:27:28
Did those hosts your were doing your tests on were connected through Easynet by any chance?
Using different Looking Glass sites around the net I found only one which had a problem doing a traceroute to this host in question - and this failing traceroute was on an Easynet LG site - and the PoP for my host is from Easynet as well, so in my understanding it is not a remote problem, but a problem at Easynet!
Try http://lg.easynet.net/lg.php and choose "traceroute" and "ixfra.de: DECIX, PNI DE" and 2607:f238:2::13 as address - traceroute ends at 2001:6f8:1:0:87:86:77:248, which is Easynet.
routing problem?
Please see the PoP list, there are a large amount of different ISPs involved from which we can do traceroutes.
But as you ask for examples, here you go:
{{{
$ traceroute6 2607:f238:2::13
[..]
12 10gigabitethernet5-3.core1.lax1.he.net 191.928 ms 179.381 ms 183.856 ms
13 10gigabitethernet1-3.core1.lax2.he.net 183.114 ms 183.696 ms 191.740 ms
14 2001:504:13::11 196.359 ms 192.320 ms 180.735 ms
15 * * *
16 * * *
}}}
No Easynet involved at all on that path.
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![[ch]](/s/countries/ch.gif)
on Friday, 17 August 2012 17:48:48
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