Strange IPv6 reachability problem
Mark Elkins
mje at posix.co.za
Mon Jun 20 09:34:05 CEST 2011
Looks good to me (from Africa)
ilinux mje # traceroute6 2001:500:61:28::70
traceroute to 2001:500:61:28::70 (2001:500:61:28::70) from
2001:42a0:1000:ff02:21b:63ff:fec0:ebd7, 30 hops max, 24 byte packets
1 cispos2-fe0-0.posix.co.za (2001:42a0:1000:ff02::1) 3.305 ms 12.45
ms 2.802 ms
2 cisrb1-cispta2.posix.co.za (2001:42a0:0:ff01::1) 156.674 ms 66.934
ms 31.277 ms
3 cisldn1-cisrbc1.posix.co.za (2001:42a0:0:ff04::2) 330.389 ms
320.796 ms 262.975 ms
4 xe-11-2-0-112.lon10.ip6.tinet.net (2001:668:0:3::4000:51) 249.284
ms 244.168 ms 245.771 ms
5 xe-4-1-0.lon11.ip6.tinet.net (2001:668:0:2::1:1621) 286.087 ms
246.995 ms 262.1 ms
6 xe-1-0-0.lon80.ip6.tinet.net (2001:668:0:2::152) 272.294 ms
348.771 ms 248.937 ms
7 xe-1-1-0.nyc20.ip6.tinet.net (2001:668:0:2::1:832) 436.734 ms
453.758 ms 363.583 ms
8 2001:504:1::a500:1280:1 (2001:504:1::a500:1280:1) 390.877 ms
391.019 ms 443.15 ms
9 int-0-5-0-0.r1.pao1.isc.org (2001:4f8:0:1::4b:1) 494.135 ms
434.337 ms 467.165 ms
10 int-0-1.r1.atl1.isc.org (2001:4f8:0:1::49:2) 594.24 ms 516.87 ms
554.559 ms
11 mirror.mycre.ws (2001:500:61:28::70) 455.684 ms 455.437 ms
481.774 ms
ilinux mje #
Any reason why your trace shows no reverse DNS?
On the other hand - I can't trace to your folks house (though I am
impressed they almost seem to have IPv6 connectivity!)
ilinux mje # traceroute 2607:fe70:1002:0:202:b3ff:fe30:f633
traceroute to 2607:fe70:1002:0:202:b3ff:fe30:f633
(2607:fe70:1002:0:202:b3ff:fe30:f633), 30 hops max, 80 byte packets
1 cispos2-fe0-0.posix.co.za (2001:42a0:1000:ff02::1) 26.890 ms
29.662 ms 29.659 ms
2 cisrb1-cispta2.posix.co.za (2001:42a0:0:ff01::1) 55.028 ms 62.556
ms 62.557 ms
3 cisldn1-cisrbc1.posix.co.za (2001:42a0:0:ff04::2) 454.318 ms
455.068 ms 455.068 ms
4 xe-11-2-0-112.lon10.ip6.tinet.net (2001:668:0:3::4000:51) 461.118
ms 461.117 ms 461.109 ms
5 xe-1-0-0.lon14.ip6.tinet.net (2001:668:0:2::1:1cd2) 463.133 ms
469.350 ms 469.347 ms
6 as3549.ip6.tinet.net (2001:668:0:3::4000:2b2) 469.267 ms 447.280
ms 446.037 ms
7 2001:450:2002:11f::2 (2001:450:2002:11f::2) 711.690 ms 688.340 ms
682.899 ms
8 core0-eth2.rollernet.net (2607:fe70::1:1) 685.050 ms 443.968 ms
443.558 ms
9 2607:fe70::5:2 (2607:fe70::5:2) 445.888 ms 442.923 ms 443.637 ms
10 2607:fe70::14:2 (2607:fe70::14:2) 446.092 ms 690.199 ms 432.083
ms
11 2607:fe70:1001::2 (2607:fe70:1001::2) 467.278 ms 470.694 ms
476.571 ms
12 * * *
13 * * *
14 * * *
15 * * *
On Sun, 2011-06-19 at 16:08 -0700, Seth Mattinen wrote:
> On 6/19/2011 3:59 PM, Jeroen Massar wrote:
>
> > Nevertheless, the point stands, do you have a traceroute from
> > source->dest, as that might at least from that POV show where the path
> > is broken, a simple ping does not show that.
> >
>
> traceroute to 2001:500:61:28::70 (2001:500:61:28::70), 30 hops max, 40
> byte packets
> 1 2607:fe70:1002::1 2.385 ms 2.341 ms 2.308 ms
> 2 2607:fe70:1001::1 10.189 ms 10.176 ms 10.178 ms
> 3 2607:fe70::14:1 10.536 ms 10.526 ms 11.711 ms
> 4 2607:fe70::5:2 14.571 ms 14.612 ms 14.616 ms
> 5 2607:fe70::a:1 11.650 ms 11.631 ms 11.618 ms
> 6 2607:fe70::4:1 11.582 ms 15.339 ms 16.466 ms
> 7 2600:6:300::6 20.470 ms * *
> 8 2600:0:2:1239:144:232:6:61 16.270 ms 16.079 ms 16.100 ms
> 9 2600:0:2:1239:144:232:9:224 16.996 ms 2600:0:2:1239:144:232:24:34
> 20.877 ms 2600:0:2:1239:144:232:9:224 20.790 ms
> 10 2600:0:2:1239:144:232:18:31 25.681 ms 25.753 ms 23.043 ms
> 11 2001:504:0:1::6939:1 23.044 ms 23.801 ms 20.814 ms
> 12 2001:470:0:32::2 29.885 ms 25.846 ms 25.799 ms
> 13 * * *
> 14 * * *
> 15 * * *
> ~Seth
--
. . ___. .__ Posix Systems - Sth Africa
/| /| / /__ mje at posix.co.za - Mark J Elkins, Cisco CCIE
/ |/ |ARK \_/ /__ LKINS Tel: +27 12 807 0590 Cell: +27 82 601 0496
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