Traceroute6 bug? on Ubuntu Lucid Server x86_64

[LuckyMan]

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

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$ 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:

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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:

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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:

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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:

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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 :)