Home page logo
/

nanog logo nanog mailing list archives

Re: www.att.net ipv6 traceroute
From: Matthew Petach <mpetach () netflight com>
Date: Mon, 1 Jul 2013 12:42:51 -0700

On Mon, Jul 1, 2013 at 7:34 AM, David Hill <dhill () mindcry org> wrote:

Anyone else noticing odd ipv6 traceroutes to www.att.net
(2001:1890:1c01:2::40)?

For example, the first traceroute originating in Chicago, and if the
hostnames are anything to go by:

Chicago -> Dallas -> Atlanta -> Miama -> NYC -> Amsterdam ->
Frankfurt -> France -> D.C. -> Atlanta...

The first 2 traceroutes are on SixXs tunnels and the third is native.

From 2604:8800::/32 (Chicago, Sixxs)

 2  gw-122.chi-03.us.sixxs.net  25.925 ms  14.816 ms  13.645 ms
 3  uschi03.sixxs.net  18.651 ms  15.544 ms  34.06 ms
 4  2620:0:6b0:a::1  27.401 ms  15.677 ms  14.83 ms
 5  tge6-3.fr3.ord4.ipv6.llnw.net  14.482 ms  18.875 ms  21.112 ms
 6  ve8.fr3.ord.ipv6.llnw.net  28.965 ms  24.031 ms  15.947 ms
 7  tge2-1.fr3.dal.ipv6.llnw.net  39.672 ms  41.431 ms  49.888 ms
 8  tge4-1.fr3.atl1.ipv6.llnw.net  59.908 ms  62.198 ms  72.244 ms
 9  tge2-1.fr3.mia1.ipv6.llnw.net  78.641 ms  75.351 ms  74.425 ms
10  2600:804:11f::11  91.243 ms  90.002 ms  87.802 ms
11  2600:802::23  119.804 ms  100.727 ms  100.737 ms
12  ge-0-3-0.IL1.NYC12.ALTER.NET  147.803 ms  145.406 ms  147.878 ms
13  ae1.XT2.AMS2.ALTER.NET  148.699 ms ae1.XT1.AMS2.ALTER.NET  146.322 ms
 152.503 ms
14  GigabitEthernet6-0-0.GW5.AMS6.ALTER.NET  145.967 ms  148.903 ms
 165.926 ms
15  FastEthernet0-0.6B1.AMS6.ALTER.NET  183.716 ms  156.131 ms  194.141 ms
16  tu3.6B1.FFT4.ALTER.NET  184.867 ms  184.005 ms  170.47 ms
17  ffm-s1-rou-1006.DE.eurorings.net  159.565 ms *  173.012 ms
18  ffm-s1-rou-1102.DE.eurorings.net  200.82 ms  225.979 ms  207.712 ms
19  kehl-s2-rou-1103.DE.eurorings.net  228.884 ms  208.576 ms  203.722 ms
20  nntr-s1-rou-1101.FR.eurorings.net  192.901 ms  210.818 ms  210.279 ms
21  * 2001:680:0:134:222:226:160:1  189.452 ms  171.714 ms
22  2001:1890:c00:c001::1171:ecca  192.306 ms  164.33 ms  192.835 ms
23  2001:1890:c00:c001::ee71:ecca  222.488 ms  218.21 ms  194.537 ms
24  2001:1890:ff:ffff:12:122:105:90  214.309 ms  216.21 ms  216.51 ms
25  wswdc22crs.ipv6.att.net  206.215 ms  220.884 ms  202.472 ms
26  attga21crs.ipv6.att.net  213.776 ms  220.918 ms  205.205 ms
27  attga409me3.ipv6.att.net  190.66 ms  228.532 ms  200.606 ms
28  2001:1890:c00:8802::11cc:6c6d  217.65 ms  222.145 ms  210.213 ms

From 2a02:2528::/32 (Switzerland, Sixxs)

 2  gw-91.gva-01.ch.sixxs.net  28.932 ms  28.415 ms  29.091 ms
 3  2a02:2528:ff:1::4  28.082 ms  28.873 ms  41.525 ms
 4  ge0-1.gv1.ip-max.sixxs.net  29.546 ms  37.835 ms  29.366 ms
 5  ge3-14.ar01.gva253.ip-max.net  30.502 ms  32.925 ms  29.370 ms
 6  ae1.cr01.gva253.ip-max.net  45.019 ms  41.335 ms  47.675 ms
 7  xe0-0-1.cr01.gva252.ip-max.net  28.903 ms  33.530 ms  41.954 ms
 8  po1.br01.gva252.ip-max.net  39.794 ms  34.197 ms  28.843 ms
 9  r1gva1.core.init7.net  28.849 ms  32.812 ms  31.988 ms
10  r1zug1.core.init7.net  47.583 ms  42.633 ms  37.785 ms
11  r1glb1.core.init7.net  36.323 ms  56.574 ms  34.909 ms
12  r1zrh1.core.init7.net  50.896 ms  56.617 ms  42.967 ms
13  ae0-12.zur11.ip6.tinet.net  42.462 ms  41.909 ms  41.557 ms
14  xe-0-1-1.nyc20.ip6.tinet.net  128.395 ms
    xe-0-1-2.nyc20.ip6.tinet.net  127.736 ms
    xe-0-1-1.nyc20.ip6.tinet.net  120.968 ms
15  nyiix.iij.net  121.285 ms  121.758 ms  120.904 ms
16  nyc002bb10.iij.net  121.436 ms  122.211 ms  120.475 ms
17  abn001bb10.iij.net  121.829 ms  123.181 ms  121.787 ms
18  2600:803:92f::1  143.860 ms  125.196 ms  179.323 ms
19  2600:802::23  139.937 ms  132.728 ms  140.416 ms
20  ge-1-2-0.il1.nyc12.alter.net  130.477 ms
    ge-0-3-0.il1.nyc12.alter.net  130.349 ms  140.231 ms
21  * * *
22  gigabitethernet6-0-0.gw5.ams6.alter.net  349.594 ms  129.648 ms
    gigabitethernet7-0-0.gw5.ams6.alter.net  130.583 ms
23  fastethernet0-0.6b1.ams6.alter.net  138.677 ms  169.896 ms  402.511 ms
24  tu3.6b1.fft4.alter.net  379.628 ms  156.939 ms  138.227 ms
25  * * *
26  ffm-s1-rou-1102.de.eurorings.net  219.035 ms  227.354 ms  236.133 ms
27  kehl-s2-rou-1103.de.eurorings.net  228.896 ms  221.190 ms  239.280 ms
28  nntr-s1-rou-1101.fr.eurorings.net  219.410 ms  226.779 ms  230.940 ms
29  2001:680::134:222:226:160:1  247.598 ms  243.938 ms  218.783 ms
30  2001:1890:c00:c001::1171:ecca  217.493 ms  242.119 ms  217.778 ms
31  2001:1890:c00:c001::ee71:ecca  238.297 ms  219.211 ms  218.524 ms
32  2001:1890:ff:ffff:12:122:105:90  257.048 ms  250.699 ms  252.160 ms
33  wswdc22crs.ipv6.att.net  248.764 ms  268.970 ms  416.443 ms
34  *
    attga21crs.ipv6.att.net  239.030 ms  241.492 ms
35  attga409me3.ipv6.att.net  249.902 ms  268.800 ms  253.631 ms
36  2001:1890:c00:8802::11cc:6c6d  260.203 ms  236.484 ms  245.413 ms

From 2001:1b60::/32 (Germany, Native)

 2  2001:1b60:0:1:0:1:0:1  0.275 ms  0.247 ms  0.237 ms
 3  Pironet.FRA-12-eth012-615.v6.lambdanet.net  3.199 ms  3.198 ms  4.578
ms
 4  ae5.irt1.fra44.de.v6.as13237.net  6.518 ms  6.499 ms  6.507 ms
 5  xe-0-3-0-0.fra21.ip6.tinet.net  6.570 ms  6.563 ms  6.543 ms
 6  xe-0-1-2.nyc20.ip6.tinet.net  86.740 ms
    xe-0-0-2.nyc20.ip6.tinet.net  86.833 ms
    xe-0-2-1.nyc20.ip6.tinet.net  86.715 ms
 7  NYIIX.IIJ.Net  88.196 ms  88.046 ms  88.016 ms
 8  nyc002bb10.iij.net  85.712 ms  85.844 ms  85.978 ms
 9  abn001bb10.iij.net  92.920 ms  93.113 ms  92.785 ms
10  2600:803:92f::1  93.331 ms  92.965 ms  92.713 ms
11  2600:802::23  94.009 ms  94.048 ms  100.621 ms
12  ge-0-3-0.IL1.NYC12.ALTER.NET  99.927 ms  99.896 ms
    ge-1-2-0.IL1.NYC12.ALTER.NET  99.866 ms
13  ae1.XT2.AMS2.ALTER.NET  97.016 ms
    ae1.XT1.AMS2.ALTER.NET  96.994 ms  96.919 ms
14  GigabitEthernet7-0-0.GW5.AMS6.ALTER.NET  97.120 ms  98.054 ms
    GigabitEthernet6-0-0.GW5.AMS6.ALTER.NET  97.111 ms
15  FastEthernet0-0.6B1.AMS6.ALTER.NET  104.272 ms  106.899 ms  106.249 ms
16  tu3.6B1.FFT4.ALTER.NET  107.443 ms  100.970 ms  98.980 ms
17  * *
    ffm-s1-rou-1006.DE.eurorings.net  99.641 ms
18  ffm-s1-rou-1102.DE.eurorings.net  190.998 ms  183.395 ms  190.432 ms
19  kehl-s2-rou-1103.DE.eurorings.net  190.216 ms  203.128 ms  192.594 ms
20  nntr-s1-rou-1101.FR.eurorings.net  183.713 ms  193.837 ms  202.330 ms
21  2001:680:0:134:222:226:164:1  209.937 ms  182.641 ms  182.782 ms
22  2001:1890:c00:c001::1171:ecca  188.257 ms  183.682 ms  216.084 ms
23  2001:1890:c00:c001::ee71:ecca  205.741 ms  183.258 ms  204.891 ms
24  2001:1890:ff:ffff:12:122:105:90  247.476 ms  242.229 ms  251.679 ms
25  wswdc22crs.ipv6.att.net  237.167 ms  216.849 ms  228.173 ms
26  attga21crs.ipv6.att.net  208.246 ms  230.028 ms  232.396 ms
27  attga409me3.ipv6.att.net  255.300 ms  251.860 ms  249.848 ms
28  2001:1890:c00:8802::11cc:6c6d  233.211 ms  215.398 ms  206.866 ms



Looks fine to me:

mpetach () tftp1:~> traceroute6 www.att.net
traceroute6 to www.att.net (2001:1890:1c01:2::40) from
2001:4998:f002:1fe::100, 64 hops max, 12 byte packets
 1  ge-0-3-1-d2.pat1.pao.yahoo.com  0.369 ms  0.352 ms  0.367 ms
 2  ae-8.pat1.dnx.yahoo.com  25.348 ms  25.363 ms  123.170 ms
 3  2605:6c00:303:303::69  35.219 ms  25.622 ms  25.956 ms
 4  10gigabitethernet4-3.core1.chi1.he.net  52.456 ms  59.001 ms  53.043 ms
 5  att-internet4-as7018.10gigabitethernet5.switch2.chi1.he.net  75.188 ms
77.365 ms  75.445 ms
 6  cgcil21crs.ipv6.att.net  102.561 ms  104.090 ms  103.922 ms
 7  cl2oh21crs.ipv6.att.net  105.803 ms  106.685 ms  103.180 ms
 8  * * *
 9  nsvtn21crs.ipv6.att.net  97.371 ms  119.415 ms  92.557 ms
10  * * *
11  attga409me3.ipv6.att.net  113.108 ms  119.130 ms  118.172 ms
12  2001:1890:c00:8802::11cc:6c6d  126.793 ms  117.539 ms  128.418 ms

Palo Alto->Denver->Chicago->Cleveland->Nashville->Atlanta

mpetach () tftp1:~> traceroute6 www.att.net
traceroute6 to www.att.net (2001:1890:1c01:2::40) from
2a00:1288:f00e:1fd::100, 64 hops max, 12 byte packets
 1  ge-0-1-0-d2.pat1.ams.yahoo.com  0.594 ms  0.745 ms  0.449 ms
 2  30gigabitethernet1-3.core1.ams1.he.net  7.836 ms  11.186 ms  0.621 ms
 3  10gigabitethernet1-4.core1.lon1.he.net  7.235 ms  7.693 ms  7.537 ms
 4  10gigabitethernet10-4.core1.nyc4.he.net  85.336 ms  75.730 ms  74.506 ms
 5  as7018-att.10gigabitethernet2-3.core1.nyc4.he.net  84.458 ms  84.046
ms  84.470 ms
 6  n54ny22crs.ipv6.att.net  108.346 ms  109.709 ms  106.708 ms
 7  wswdc22crs.ipv6.att.net  109.593 ms  109.116 ms  109.738 ms
 8  attga21crs.ipv6.att.net  107.695 ms  104.384 ms  108.077 ms
 9  attga409me3.ipv6.att.net  104.221 ms  109.647 ms  104.790 ms
10  2001:1890:c00:8802::11cc:6c6d  105.524 ms  105.763 ms  105.345 ms

Amsterdam->London->NY->DC->Atlanta

Possibly just a transient issue?

Matt


  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]