IPv6 Routes in L3

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.
>