Comcast's IPv6 Information Site Unreachable

Mon Jul 2 01:44:40 UTC 2012

Thanks for the input guys! Sounds like it might be an issue with my 
tunnel then. I had problems getting to a few sites last week 
(http://www.dslreports.com/forum/r27265527-IPV6-Issues-Facebook-and-Engadget) 
and HE resolved the issue pretty quickly. I will ask them if they are 
aware of it.

Thanks,
Derek

On 7/1/2012 9:35 PM, Frank Bulk wrote:
> ICMP to www.comcast6.net has been blocked since 3:16 pm Central on 6/7/2012.
> But their site loads fine over port 80.
>
> Frank
>
> -----Original Message-----
> From: Derek Ivey [mailto:derek at derekivey.com]
> Sent: Sunday, July 01, 2012 6:28 PM
> To: nanog at nanog.org
> Subject: Comcast's IPv6 Information Site Unreachable
>
> Anyone else having trouble getting to Comcast's IPv6 Information site?
> It appears to be unreachable over IPv6.
>
> [root at server ~]# ping6 comcast6.net
> PING comcast6.net(speedlab-app05.newcastlerdc.de.panjde.comcast.net) 56
> data bytes
>   From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=0
> Destination unreachable: Administratively prohibited
>   From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=1
> Destination unreachable: Administratively prohibited
>   From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=2
> Destination unreachable: Administratively prohibited
>   From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=3
> Destination unreachable: Administratively prohibited
>   From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=4
> Destination unreachable: Administratively prohibited
> ^C
> --- comcast6.net ping statistics ---
> 5 packets transmitted, 0 received, +5 errors, 100% packet loss, time 4008ms
>
> [root at server ~]# traceroute6 comcast6.net
> traceroute to comcast6.net (2001:558:fe16:7:69:252:216:215), 30 hops
> max, 40 byte packets
>    1  pfsense.d3r3k.net (2001:470:8:d15::1)  0.278 ms  0.282 ms  0.317 ms
>    2  2001:470:7:d15::1 (2001:470:7:d15::1)  20.794 ms  24.746 ms 28.569 ms
>    3  gige-g4-12.core1.ash1.he.net (2001:470:0:90::1)  28.946 ms 29.124
> ms  29.144 ms
>    4  as6453.gige-g3-16.core1.ash1.he.net (2001:470:0:191::2)  28.917 ms
> 28.936 ms  28.097 ms
>    5  if-ae2.2.tcore2.AEQ-Ashburn.ipv6.as6453.net (2001:5a0:600:500::1)
> 28.059 ms  31.771 ms  57.135 ms
>    6  2001:5a0:600:500::72 (2001:5a0:600:500::72)  28.959 ms
> 2001:559::31d (2001:559::31d)  29.041 ms  29.060 ms
>    7  pos-3-11-0-0-cr01.ashburn.va.ibone.comcast.net
> (2001:558:0:f5a4::1)  32.553 ms  19.810 ms  16.526 ms
>    8  2001:558:0:f669::2 (2001:558:0:f669::2)  39.019 ms  37.954 ms 36.368 ms
>    9  2001:558:0:f57f::1 (2001:558:0:f57f::1)  67.134 ms  67.151 ms 67.166 ms
> 10  pos-2-7-0-0-cr01.denver.co.ibone.comcast.net (2001:558:0:f54d::1)
> 81.571 ms  81.507 ms  81.569 ms
> 11  2001:558:0:f744::2 (2001:558:0:f744::2)  80.633 ms  80.760 ms 79.825 ms
> 12  2001:558:d0:33::1 (2001:558:d0:33::1)  104.686 ms  105.060 ms 105.040 ms
> 13  te-3-1-ur03.cmc.co.ndcwest.comcast.net (2001:558:d0:5::1) 104.335
> ms  103.962 ms  104.068 ms
> 14  te-3-1-ur03.cmc.co.ndcwest.comcast.net (2001:558:d0:5::1) 104.492 ms
> !X  104.597 ms !X  104.999 ms !X
>
> Thanks,
> Derek
>
>
>