IPv6 Routes in L3
Darton Williams
dartonw at gmail.com
Thu Feb 21 04:05:57 UTC 2013
Sorry for the noise, I just looked at Level3 LG again (it returned unknown
error messages the last time I tried this). Approximating the same route,
their trace reaches fed2 and actually leaves the inter-VLAN whereas mine
stops at hop 13 here. I'm guessing the !filtered at the destination is just
ICMP.
Traceroute results from Salt Lake City, UT
to 2001:4178:2:1269::fed2
1 vl-11.car2.SaltLakeCity1.Level3.net (2001:1900:4:1::13E) 0 msec 0
msec 0 msec
2 vl-4043.edge3.Denver1.Level3.net (2001:1900:4:1::142) 56 msec 32 msec 8 msec
3 vl-4080.edge6.Denver1.Level3.net (2001:1900:4:1::2E) 8 msec 12 msec
vl-4081.edge6.Denver1.Level3.net (2001:1900:4:1::32) 12 msec
4 vl-4042.edge1.Chicago2.Level3.net (2001:1900:4:1::36) 36 msec 36
msec 36 msec
5 vl-4067.car1.Chicago1.Level3.net (2001:1900:4:1::1D) 36 msec 36 msec 40 msec
6 vl-4061.car2.NewYork2.Level3.net (2001:1900:4:1::22) 88 msec 180
msec 204 msec
7 vl-4081.car1.NewYork2.Level3.net (2001:1900:4:1::F5) 60 msec 56 msec 56 msec
8 vl-4061.edge2.Washington1.Level3.net (2001:1900:4:1::105) 64 msec
60 msec 64 msec
9 vl-4080.edge1.Washington1.Level3.net (2001:1900:4:1::D1) 60 msec
60 msec 64 msec
10 vl-4086.edge3.Paris1.Level3.net (2001:1900:6:1::15) 160 msec 144
msec 144 msec
11 vl-4081.edge4.Paris1.Level3.net (2001:1900:5:1::12E) 140 msec
vl-4080.edge4.Paris1.Level3.net (2001:1900:5:1::12A) 144 msec
vl-4081.edge4.Paris1.Level3.net (2001:1900:5:1::12E) 140 msec
12 vl-4060.edge3.Frankfurt1.Level3.net (2001:1900:5:1::215) 152 msec
176 msec 148 msec
13 vl-4043.car1.Munich1.Level3.net (2001:1900:5:1::25E) 172 msec 184
msec 220 msec
14 2001:1900:5:2:2::302 156 msec 156 msec 156 msec
15 te9-1-c1.net.muc2.internetx.de (2001:4178:1::6) 160 msec 160 msec 160 msec
16 2001:4178:2:1269::FED2 !filtered !filtered !filtered
On Wed, Feb 20, 2013 at 10:39 PM, Darton Williams <dartonw at gmail.com> wrote:
> Anyone have visibility on Level 3 IPv6 routing? I'm unable to reach
> http://fedoraproject.org by their primary and ended up having to spoof a
> secondary in local DNS. Note that this is on HughesNet; multiple levels of
> support have been clueless or stumped.
>
> For the curious:
>
> [darton at dkw-vostro ~]$ dig -6 @google-public-dns-a.google.com -t aaaa
> www.fedoraproject.org
>
> ; <<>> DiG 9.9.2-P1-RedHat-9.9.2-3.P1.fc17 <<>> -6 @
> google-public-dns-a.google.com -t aaaa www.fedoraproject.org
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21521
> ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;www.fedoraproject.org. IN AAAA
>
> ;; ANSWER SECTION:
> www.fedoraproject.org. 1200 IN CNAME wildcard.fedoraproject.org.
> wildcard.fedoraproject.org. 1200 IN AAAA 2607:f188::dead:beef:cafe:fed1
> wildcard.fedoraproject.org. 1200 IN AAAA 2001:4178:2:1269::fed2
> wildcard.fedoraproject.org. 1200 IN AAAA
> 2610:28:3090:3001:dead:beef:cafe:fed4
>
> ;; Query time: 10 msec
> ;; SERVER: 2001:4860:4860::8888#53(2001:4860:4860::8888)
> ;; WHEN: Wed Feb 20 22:13:26 2013
> ;; MSG SIZE rcvd: 163
>
> Love the beefy theme there...
>
> fed2 is the only one I can't reach, and though the AAAA records are
> round-robin, fed2 appears to be the one to which HTTP requests get routed
> and tracing that takes me from Salt Lake to Munich by way of Paris before
> timing out:
>
> [darton at dkw-vostro ~]$ traceroute6 -N 64 fedoraproject.org
> traceroute to fedoraproject.org (2001:4178:2:1269::fed2), 30 hops max, 80
> byte packets
> 1 2001:5b0:216e:9590:280:aeff:fe3f:4965
> (2001:5b0:216e:9590:280:aeff:fe3f:4965) 24.672 ms 24.504 ms 24.506 ms
> 2 * * *
> 3 2001:5b0:21ff:fffa::100 (2001:5b0:21ff:fffa::100) 1079.945 ms
> 1237.825 ms 1290.435 ms
> 4 vlan122.car1.SaltLakeCity1.Level3.net (2001:1900:2100::d9d) 1341.274
> ms 1409.308 ms 1411.624 ms
> 5 vl-11.car2.SaltLakeCity1.Level3.net (2001:1900:4:1::13e) 1489.445 ms
> 1508.739 ms 1733.181 ms
> 6 vl-4043.edge3.Denver1.Level3.net (2001:1900:4:1::142) 1578.809 ms
> 1639.417 ms 1641.692 ms
> 7 vl-4081.edge6.Denver1.Level3.net (2001:1900:4:1::32) 1641.783 ms
> vl-4080.edge6.Denver1.Level3.net (2001:1900:4:1::2e) 1691.372 ms
> vl-4081.edge6.Denver1.Level3.net (2001:1900:4:1::32) 1698.425 ms
> 8 vl-4042.edge1.Chicago2.Level3.net (2001:1900:4:1::36) 1745.349 ms
> 1745.056 ms 1744.322 ms
> 9 vl-4067.car1.Chicago1.Level3.net (2001:1900:4:1::1d) 1744.410 ms
> 1744.489 ms 1737.454 ms
> 10 vl-4061.car2.NewYork2.Level3.net (2001:1900:4:1::22) 1873.919 ms
> 1873.887 ms 1870.193 ms
> 11 vl-4080.car1.NewYork2.Level3.net (2001:1900:4:1::f1) 1766.868 ms
> 1766.506 ms 1765.284 ms
> 12 vl-4061.edge2.Washington1.Level3.net (2001:1900:4:1::105) 1767.345
> ms 1767.463 ms 1767.493 ms
> 13 vl-4081.edge1.Washington1.Level3.net (2001:1900:4:1::d5) 1767.633 ms
> vl-4083.edge1.Washington1.Level3.net (2001:1900:4:1::dd) 1801.766 ms
> vl-4081.edge1.Washington1.Level3.net (2001:1900:4:1::d5) 1801.754 ms
> 14 vl-4086.edge3.Paris1.Level3.net (2001:1900:6:1::15) 1844.308 ms
> 1844.440 ms 1844.908 ms
> 15 vl-4081.edge4.Paris1.Level3.net (2001:1900:5:1::12e) 1844.358 ms
> 1844.415 ms vl-4080.edge4.Paris1.Level3.net (2001:1900:5:1::12a)
> 1843.473 ms
> 16 vl-4060.edge3.Frankfurt1.Level3.net (2001:1900:5:1::215) 1845.091 ms
> 1845.065 ms 1845.030 ms
> 17 vl-4043.car1.Munich1.Level3.net (2001:1900:5:1::25e) 1845.052 ms
> 1845.033 ms 1897.648 ms
> 18 * * *
> 19 * * *
> 20 * * *
> 21 * * *
> 22 * * *
> 23 * * *
> 24 * * *
> 25 * * *
> 26 * * *
> 27 * * *
> 28 * * *
> 29 * * *
> 30 * * *
>
> fed4 is a different route:
>
> [darton at dkw-vostro ~]$ traceroute6 2610:28:3090:3001:dead:beef:cafe:fed4
> traceroute to 2610:28:3090:3001:dead:beef:cafe:fed4
> (2610:28:3090:3001:dead:beef:cafe:fed4), 30 hops max, 80 byte packets
> 1 2001:5b0:216e:9590:280:aeff:fe3f:4965
> (2001:5b0:216e:9590:280:aeff:fe3f:4965) 15.410 ms 15.337 ms 15.269 ms
> 2 * * *
> 3 2001:5b0:21ff:fffa::100 (2001:5b0:21ff:fffa::100) 897.468 ms 915.494
> ms 975.368 ms
> 4 vlan122.car1.SaltLakeCity1.Level3.net (2001:1900:2100::d9d) 1026.481
> ms 1044.762 ms 1164.987 ms
> 5 vl-4046.edge5.LosAngeles1.Level3.net (2001:1900:4:1::279) 1198.366
> ms 1406.782 ms 1504.377 ms
> 6 vl-60.edge1.LosAngeles9.Level3.net (2001:1900:12:1::d) 1602.064 ms
> 789.763 ms 646.960 ms
> 7 gblx-level3-10G.LosAngeles9.Level3.net (2001:1900:4:3::276) 702.353
> ms 733.689 ms 902.689 ms
> 8 snvang.abilene.ucaid.edu (2001:504:d::bd) 966.739 ms 1006.089 ms
> 1090.304 ms
> 9 * * *
> 10 xe-1-0-2.60.rtr.atla.net.internet2.edu (2001:468:1:60::1) 1260.105
> ms 1342.136 ms 1386.991 ms
> 11 chlt7600-gw-to-chltcrs-gw.ncren.net (2610:28:10c:5::2) 1439.616 ms
> 1550.497 ms 1630.215 ms
> 12 manningkid-to-chlt7600-gw.ncren.net (2610:28:10c:7::2) 1034.366 ms
> 1034.401 ms 1172.668 ms
> 13 2610:28:3090:23::2 (2610:28:3090:23::2) 1003.700 ms 1017.225 ms *
> 14 2610:28:3090:3001:dead:beef:cafe:fed4
> (2610:28:3090:3001:dead:beef:cafe:fed4) 921.136 ms !X 832.055 ms !X
> 789.599 ms !X
>
> Any ideas/comparisons/insights appreciated. This is so far the only native
> IPv6 connection I have, despite having access to two datacenters and FiOS,
> so not much to compare it with. Shameful.
>
>
>
> Regards,
>
> Darton Williams
>
>
> ...Yeah, that guy.
>
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