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Traceroute6 bug? on Ubuntu Lucid Server x86_64

Started by LuckyMan, September 10, 2010, 10:05:21 PM

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LuckyMan

Hi, I just tried to do some tracing and received such an unusual error..

$ traceroute6 2001:6f8:608:7:230:48ff:fe73:13fe
traceroute to 2001:6f8:608:7:230:48ff:fe73:13fe (2001:6f8:608:7:230:48ff:fe73:13fe) from 2001:470:9364:505:feed:dead:beef:cafe, port 33434, from port 54109, 30 hops max, 60 byte packets
1  * * *         
2  * * *         
3  * * *         
4  * * *         
5  * * 2001:6f8:700:1::2:1 (2001:6f8:700:1::2:1)  20.049 ms
6  * 2001:6f8:700:1::2:1 (2001:6f8:700:1::2:1)  20.604 ms  59.757 ms
7  * * 2001:6f8:700:1::2:1 (2001:6f8:700:1::2:1)  19.279 ms
8  * * *         
Receive error: Permission denied
Receive error: Permission denied
Receive error: Permission denied
9  * * 2001:6f8:700:1::1:2 (2001:6f8:700:1::1:2)  43.369 ms !A
$


Could anybody explain it to me? It seems that somebody didn't let me to receive some packets..
Any ideas?

broquea

Sounds like filtering out UDP based traceroutes or similar.

ping6 ICMP works:
ping6 -c 5 2001:6f8:608:7:230:48ff:fe73:13fe
PING 2001:6f8:608:7:230:48ff:fe73:13fe(2001:6f8:608:7:230:48ff:fe73:13fe) 56 data bytes
64 bytes from 2001:6f8:608:7:230:48ff:fe73:13fe: icmp_seq=1 ttl=56 time=153 ms
64 bytes from 2001:6f8:608:7:230:48ff:fe73:13fe: icmp_seq=2 ttl=56 time=161 ms
64 bytes from 2001:6f8:608:7:230:48ff:fe73:13fe: icmp_seq=3 ttl=56 time=166 ms
64 bytes from 2001:6f8:608:7:230:48ff:fe73:13fe: icmp_seq=4 ttl=56 time=167 ms
64 bytes from 2001:6f8:608:7:230:48ff:fe73:13fe: icmp_seq=5 ttl=56 time=168 ms

--- 2001:6f8:608:7:230:48ff:fe73:13fe ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4002ms
rtt min/avg/max/mdev = 153.710/163.410/168.142/5.399 ms


mtr works:
mtr 2001:6f8:608:7:230:48ff:fe73:13fe -c5 -r
www.deus-exmachina.net            Snt: 5     Loss%  Last   Avg  Best  Wrst StDev
master.deus-exmachina.net                     0.0%   0.1   0.0   0.0   0.1   0.0
10gigabitethernet6-4.core1.lax1.he.net        0.0%   8.3   9.0   8.3  11.6   1.4
10gigabitethernet4-3.core1.nyc4.he.net        0.0%  19.2  63.5  19.2  79.4  25.2
10gigabitethernet1-2.core1.lon1.ipv6.he.net   0.0% 137.6 146.8 137.6 173.7  15.3
ge0-1-0-0.er0.thlon.uk.easynet.net            0.0% 138.5 138.6 138.5 138.8   0.1
2001:6f8:1::12:1                              0.0% 137.5 137.5 137.4 137.5   0.0
2001:6f8:700:1::1:2                           0.0% 176.3 169.4 142.8 193.0  20.9
2001:6f8:700:1::1:2                           0.0% 178.5 171.1 154.8 179.3  10.6
www.ipv6.dataline.co.uk                      20.0% 152.5 184.2 143.6 262.6  54.3


plain old traceroute6 doesn't:
traceroute6 2001:6f8:608:7:230:48ff:fe73:13fe
traceroute to 2001:6f8:608:7:230:48ff:fe73:13fe (2001:6f8:608:7:230:48ff:fe73:13fe), 30 hops max, 80 byte packets
1  master.deus-exmachina.net (2001:470:1:9::a)  0.033 ms  0.012 ms  0.012 ms
2  10gigabitethernet6-4.core1.lax1.he.net (2001:470:0:18d::2)  18.811 ms  18.795 ms  18.782 ms
3  10gigabitethernet4-3.core1.nyc4.he.net (2001:470:0:10e::2)  73.923 ms  73.941 ms  73.985 ms
4  10gigabitethernet1-2.core1.lon1.ipv6.he.net (2001:470:0:3e::2)  137.691 ms  137.779 ms  137.700 ms
5  ge0-1-0-0.er0.thlon.uk.easynet.net (2001:7f8:4::11ed:1)  139.615 ms  139.471 ms  139.456 ms
6  2001:6f8:1::12:1 (2001:6f8:1::12:1)  137.585 ms * *
7  2001:6f8:700:1::1:2 (2001:6f8:700:1::1:2)  167.502 ms  163.655 ms  167.200 ms
8  2001:6f8:700:1::1:2 (2001:6f8:700:1::1:2)  167.013 ms  158.465 ms  158.671 ms
9  2001:6f8:700:1::1:2 (2001:6f8:700:1::1:2)  158.497 ms !X  165.170 ms !X  165.242 ms !X


traceroute6 with TCP probes works:
traceroute6 -T 2001:6f8:608:7:230:48ff:fe73:13fe
traceroute to 2001:6f8:608:7:230:48ff:fe73:13fe (2001:6f8:608:7:230:48ff:fe73:13fe), 30 hops max, 80 byte packets
1  master.deus-exmachina.net (2001:470:1:9::a)  0.032 ms  0.016 ms  0.014 ms
2  10gigabitethernet6-4.core1.lax1.he.net (2001:470:0:18d::2)  11.474 ms  11.520 ms  11.569 ms
3  10gigabitethernet4-3.core1.nyc4.he.net (2001:470:0:10e::2)  69.843 ms  69.642 ms  69.890 ms
4  10gigabitethernet1-2.core1.lon1.ipv6.he.net (2001:470:0:3e::2)  137.709 ms  137.580 ms  137.756 ms
5  ge0-1-0-0.er0.thlon.uk.easynet.net (2001:7f8:4::11ed:1)  139.320 ms  138.802 ms  139.334 ms
6  2001:6f8:1::12:1 (2001:6f8:1::12:1)  137.748 ms * *
7  2001:6f8:700:1::1:2 (2001:6f8:700:1::1:2)  152.991 ms  154.635 ms  154.461 ms
8  2001:6f8:700:1::1:2 (2001:6f8:700:1::1:2)  154.654 ms  147.434 ms  146.778 ms
9  www.ipv6.dataline.co.uk (2001:6f8:608:7:230:48ff:fe73:13fe)  146.416 ms  151.511 ms  151.001 ms

LuckyMan

There is always something new to learn.. thanks for your rerply :)