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Re: www.att.net ipv6 traceroute
From: Robert Glover <robertg () garlic com>
Date: Mon, 01 Jul 2013 13:04:59 -0700

On 07/01/2013 07:34 AM, David Hill 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...


Looks OK from here:

(From 2607:4B00::/32 - SF Bay Area, Native):

mushroom#traceroute www.att.net                         
Translating "www.att.net"...domain server (216.139.32.37) [OK]

Type escape sequence to abort.
Tracing the route to www.att.net (2001:1890:1C01:2::40)

  1 2001:550:2:C::2:1 0 msec 4 msec 4 msec
  2 2001:550::142 40 msec
    2001:550::113 52 msec
    2001:550::142 48 msec
  3 2001:550::1040 40 msec
    2001:550::1041 48 msec
    2001:550::1040 48 msec
  4 2001:550:4::4C 44 msec 36 msec 44 msec
  5 2001:550:3::7A 40 msec 40 msec 44 msec
  6 sffca22crs.ipv6.att.net (2001:1890:FF:FFFF:12:122:86:122) 112 msec
108 msec 112 msec
  7 la2ca22crs.ipv6.att.net (2001:1890:FF:FFFF:12:122:31:133) 104 msec
112 msec 108 msec
  8 dlstx22crs.ipv6.att.net (2001:1890:FF:FFFF:12:122:28:177) 108 msec
104 msec 112 msec
  9 attga21crs.ipv6.att.net (2001:1890:FF:FFFF:12:122:28:173) 108 msec
100 msec 108 msec
 10 attga409me3.ipv6.att.net (2001:1890:FF:FFFF:12:122:120:244) 112 msec
124 msec 100 msec
 11  *
    2001:1890:C00:8802::11CC:6C6D 108 msec 104 msec
 12  *  *  *
 13  *  *  *
 14  *  *  *


-Robert


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