AT&T. Layer 6-8 needed.

David Temkin davet1 at gmail.com
Sun Jul 26 22:45:40 CDT 2009


Someone just pointed out that I dumbassedly tracerouted to img.4chan.com,
which is a linkfarm.

img.4chan.org is also reachable from AT&T in NY:

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 207.126.64.182, timeout is 2 seconds:
.!..!
Success rate is 40 percent (2/5), round-trip min/avg/max = 164/196/228 ms
ny01-rtr#



Type escape sequence to abort.
Tracing the route to img.4chan.org (207.126.64.182)

  1 12.94.163.57 8 msec 4 msec 4 msec
  2 cr1.n54ny.ip.att.net (12.122.131.238) [MPLS: Label 16377 Exp 0] 8 msec 8
msec 8 msec
  3 ggr7.n54ny.ip.att.net (12.122.131.97) 8 msec 4 msec 8 msec
  4 192.205.35.10 8 msec 4 msec 4 msec
  5 cr1-tengig-0-8-3-0.NewYork.savvis.net (204.70.198.13) 4 msec 8 msec 4
msec
  6 cr1-pos-0-3-2-3.dallas.savvis.net (204.70.192.82) 48 msec 44 msec 44
msec
  7  *  *  *
  8 er1-te-3-1.dallasequinix.savvis.net (204.70.204.149) 48 msec 44 msec 44
msec
  9 208.175.175.22 164 msec 172 msec 120 msec
 10 unknown.xeex.net (216.152.253.26) 48 msec 48 msec 48 msec


However, it's equally as unhealthy from Comcast:

--- img.4chan.org ping statistics ---
110 packets transmitted, 77 packets received, 30% packet loss
round-trip min/avg/max/stddev = 62.635/233.576/639.919/96.254 ms


So, enough with the conspiracy theories already.

On Sun, Jul 26, 2009 at 8:03 PM, David Temkin <davet1 at gmail.com> wrote:

> Perfectly reachable from AT&T in NY:
>
> ny01-rtr#traceroute img.4chan.com
>
> Type escape sequence to abort.
> Tracing the route to img.4chan.com (208.73.210.27)
>
>   1 12.94.163.57 8 msec 4 msec 4 msec
>   2 cr1.n54ny.ip.att.net (12.122.131.238) [MPLS: Label 16370 Exp 0] 8 msec
> 8 msec 8 msec
>   3 ggr4.n54ny.ip.att.net (12.122.131.25) 8 msec 8 msec 4 msec
>   4 192.205.34.50 16 msec 4 msec 4 msec
>   5 0.xe-5-0-3.XL4.NYC4.ALTER.NET (152.63.18.10) 36 msec 4 msec 8 msec
>   6 0.so-6-0-0.XL2.LAX1.ALTER.NET (152.63.57.81) 76 msec 76 msec 76 msec
>   7 POS7-0.GW4.LAX1.ALTER.NET (152.63.53.61) 76 msec 76 msec 76 msec
>   8 oversee-gw.customer.alter.net (65.223.29.34) 76 msec 80 msec 80 msec
>   9 208.73.208.10 80 msec 80 msec 76 msec
>  10 img.4chan.com (208.73.210.27) 76 msec 76 msec 76 msec
>
> Are you sure this isn't just a technical/routing issue versus a blocking
> issue?  Seems like everyone's out to make a sensationalist story out of this
> when it's unlikely that anyone's awake at AT&T on a Sunday afternoon who
> could/would make such a change.
>
> -Dave
>
>
> On Sun, Jul 26, 2009 at 7:47 PM, jamie <j at arpa.com> wrote:
>
>> img.4chan.org is the biggest site - I've already received six replies on
>> top
>> of the list-replies confirming (b/c they saw this problem mentioned on
>> sites/blogs) filtering.
>>
>> technical information, traces, bgp views (esp. from singly-homed T
>> customers), etc, encouraged
>>
>> -jamie
>>
>>
>> >>
>> > I don't see a below below.
>> >
>>
>
>



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