NANOG Digest, Vol 54, Issue 3 (Comcast's IPv6 Information Site Unreachable)

Brzozowski, John John_Brzozowski at Cable.Comcast.com
Mon Jul 2 11:06:42 UTC 2012


Folks,

We will report back shortly with some updates.

Thanks for the mail.

John
=========================================
John Jason Brzozowski
Comcast Cable
m) +1-609-377-6594
e) mailto:john_brzozowski at cable.comcast.com
o) +1-484-962-0060
w) http://www.comcast6.net
=========================================

On Jul 1, 2012, at 10:46 PM, <nanog-request at nanog.org>
 <nanog-request at nanog.org> wrote:

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> Today's Topics:
> 
>   1. Re: Comcast's IPv6 Information Site Unreachable (Sadiq Saif)
>   2. RE: Comcast's IPv6 Information Site Unreachable (Frank Bulk)
>   3. Re: Comcast's IPv6 Information Site Unreachable (Derek Ivey)
>   4. Re: [c-nsp] NTP Servers (Jimmy Hess)
>   5. Re: Comcast's IPv6 Information Site Unreachable (Jimmy Hess)
>   6. Re: FYI Netflix is down (steve pirk [egrep])
>   7. Re: Comcast's IPv6 Information Site Unreachable (Derek Ivey)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Sun, 1 Jul 2012 19:37:54 -0400
> From: Sadiq Saif <sadiq at asininetech.com>
> To: Derek Ivey <derek at derekivey.com>
> Cc: nanog at nanog.org
> Subject: Re: Comcast's IPv6 Information Site Unreachable
> Message-ID:
> 	<CABSLv--jqtdX3eyORRRaWgXtV_UAjFY7jzGEcVRyDo_WmQ60KA at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
> 
> Website is reachable here via my HE tunnel. Pings are not going
> through though as you showed.
> 
> On Sun, Jul 1, 2012 at 7:28 PM, Derek Ivey <derek at derekivey.com> wrote:
>> 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
>> 
> 
> 
> 
> -- 
> Sadiq S
> O< ascii ribbon campaign - stop html mail - www.asciiribbon.org
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Sun, 1 Jul 2012 20:35:24 -0500
> From: "Frank Bulk" <frnkblk at iname.com>
> To: "'Derek Ivey'" <derek at derekivey.com>,	<nanog at nanog.org>
> Subject: RE: Comcast's IPv6 Information Site Unreachable
> Message-ID: <[email protected]>
> Content-Type: text/plain;	charset="us-ascii"
> 
> 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
> 
> 
> 
> 
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Sun, 01 Jul 2012 21:44:40 -0400
> From: Derek Ivey <derek at derekivey.com>
> To: Frank Bulk <frnkblk at iname.com>
> Cc: nanog at nanog.org
> Subject: Re: Comcast's IPv6 Information Site Unreachable
> Message-ID: <4FF0FD08.8050706 at derekivey.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> 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
>> 
>> 
>> 
> 
> 
> 
> 
> 
> ------------------------------
> 
> Message: 4
> Date: Sun, 1 Jul 2012 20:59:42 -0500
> From: Jimmy Hess <mysidia at gmail.com>
> To: PC <paul4004 at gmail.com>
> Cc: "nanog at nanog.org" <nanog at nanog.org>
> Subject: Re: [c-nsp] NTP Servers
> Message-ID:
> 	<CAAAwwbX-fEzaLRPrbrhM4MowFY=FJ2aGe=T4xFN+TprqKmG_GQ at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> On 7/1/12, PC <paul4004 at gmail.com> wrote:
>> If your application requires sub-5 second accuracy, (such as end of a
>> banking day), then Windows NTP is unsuitable for the purpose.
> Looks like CYA on Microsoft's part.
> 
> That i've seen,   Windows NTP in physical environments with a hardware
> system clock not having issues consistently provides  accuracy  better
> than  +/-  0.5 against the time source it's synced with,  but  in
> virtual environments,  which have incompatibilities with high
> sub-second RTC accuracy in the first place, neither Windows nor Unix
> NTP services are able to provide that consistently  without much
> tinkering.
> 
> If it's absolutely critical that you have   sub-5  second accuracy,
> even Unix NTP is not to be considered good enough,     you need highly
> accurate hardware time source,  something more accurate than the usual
> system clock you find in a PC or server.  Unix NTP can only do so much
> to correct  for a broken system clock;  although it does do a very
> good job disciplining PC real-time clocks that consistently run a bit
> too fast or too slow,  ultimately the
> personal computer clocks can at times be unreliable....
> 
> If they were perfect, you wouldn't need time sync in the first place;
> just set them once,
> and correct the  annual  0.01 seconds worth of error  once a year....
> 
> --
> -JH
> 
> 
> 
> ------------------------------
> 
> Message: 5
> Date: Sun, 1 Jul 2012 21:20:11 -0500
> From: Jimmy Hess <mysidia at gmail.com>
> To: Derek Ivey <derek at derekivey.com>
> Cc: nanog at nanog.org
> Subject: Re: Comcast's IPv6 Information Site Unreachable
> Message-ID:
> 	<CAAAwwbVQmcmeGMG44FgSUS6+c9GRTAXBh6DF5P6BEp0rQJVJpA at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> On 7/1/12, Derek Ivey <derek at derekivey.com> wrote:
>> Anyone else having trouble getting to Comcast's IPv6 Information site?
>> It appears to be unreachable over IPv6.
> 
> Looks like just ICMP that's broken.
> 
> ~# telnet comcast6.net 80
> Trying 2001:558:fe23:2:69:252:208:135...
> Connected to comcast6.net (2001:558:fe23:2:69:252:208:135).
> Escape character is '^]'.
> HEAD / HTTP/1.1
> Host: comcast6.net
> User-Agent: Telnet
> 
> HTTP/1.1 200 OK
> Date: Mon, 02 Jul 2012 02:21:33 GMT
> Server: Apache/2.2.15 (Red Hat)
> X-Powered-By: PHP/5.3.3
> Set-Cookie: 1a3c31c9847a772452af472ce0afd5f3=5hcm2m506se424huah4eo5lvo7; path=/
> P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"
> Cache-Control: no-cache
> Pragma: no-cache
> Connection: close
> Content-Type: text/html; charset=utf-8
> 
> Connection closed by foreign host.
> 
> 
> 
> ~# 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
>> From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=5
> Destination unreachable: Administratively prohibited
>> From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=6
> Destination unreachable: Administratively prohibited
>> From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=7
> Destination unreachable: Administratively prohibited
> 
> --- comcast6.net ping statistics ---
> 8 packets transmitted, 0 received, +8 errors, 100% packet loss, time 6999ms
> 
> 
> 
> ------------------------------
> 
> Message: 6
> Date: Sun, 1 Jul 2012 19:38:16 -0700
> From: "steve pirk [egrep]" <steve at pirk.com>
> To: Jay Ashworth <jra at baylink.com>
> Cc: NANOG <nanog at nanog.org>
> Subject: Re: FYI Netflix is down
> Message-ID:
> 	<CAK4no06996brnEm=9117ANePGqrj6_6FDc999KD+ae_kWyWAbA at mail.gmail.com>
> Content-Type: text/plain; charset=windows-1252
> 
> On Sun, Jul 1, 2012 at 11:38 AM, Jay Ashworth <jra at baylink.com> wrote:
> 
>> Not entirely.  Datacenters do go down, our best efforts to the contrary
>> notwithstanding.  Amazon doesn't guarantee you redundancy on EC2, only
>> the tools to provide it yourself.  25% Amazon; 75% service provider
>> clients;
>> that's my appraisal of the blame.
>> 
> 
>> From a Wired article:
> 
>> That?s what was supposed to happen at Netflix Friday night. But it didn?t
>> work out that way. According to Twitter messages from Netflix Director of
>> Cloud Architecture Adrian Cockcroft and Instagram Engineer Rick Branson, it
>> looks like an Amazon Elastic Load Balancing service, designed to spread
>> Netflix?s processing loads across data centers, failed during the outage.
>> Without that ELB service working properly, the Netflix and Pintrest
>> services hosted by Amazon crashed.
> 
> http://www.wired.com/wiredenterprise/2012/06/real-clouds-crush-amazon/
> 
> The GSLB fail-over that was supposed to take place for the affected
> services (that had configured their applications to fail-over) failed.
> 
> I heard about this the day after Google announced the Compute Engine
> addition to the App Engine product lines they have. The demo was awesome.
> I imagine Google has GSLB down pat by now, so some companies might start
> looking... ;-]
> 
> --steve
> 
> 
> ------------------------------
> 
> Message: 7
> Date: Sun, 01 Jul 2012 22:45:51 -0400
> From: Derek Ivey <derek at derekivey.com>
> To: Jimmy Hess <mysidia at gmail.com>
> Cc: nanog at nanog.org
> Subject: Re: Comcast's IPv6 Information Site Unreachable
> Message-ID: <4FF10B5F.2090205 at derekivey.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> Someone replied to my DSL Reports thread: 
> http://www.dslreports.com/forum/r27289866-
> 
> Apparently there is an ACL issue with their load balancer that is 
> blocking ICMP and causing PMTU issues for people who use tunnels.
> 
> http://www.dslreports.com/forum/r27226136- 
> <http://www.gossamer-threads.com/lists/nsp/ipv6/34197>
> 
> It looks like it's been going on since June 11. It's strange that 
> Comcast hasn't resolved the issue by now.
> 
> Thanks,
> Derek
> 
> On 7/1/2012 10:20 PM, Jimmy Hess wrote:
>> On 7/1/12, Derek Ivey <derek at derekivey.com> wrote:
>>> Anyone else having trouble getting to Comcast's IPv6 Information site?
>>> It appears to be unreachable over IPv6.
>> Looks like just ICMP that's broken.
>> 
>>  ~# telnet comcast6.net 80
>> Trying 2001:558:fe23:2:69:252:208:135...
>> Connected to comcast6.net (2001:558:fe23:2:69:252:208:135).
>> Escape character is '^]'.
>> HEAD / HTTP/1.1
>> Host: comcast6.net
>> User-Agent: Telnet
>> 
>> HTTP/1.1 200 OK
>> Date: Mon, 02 Jul 2012 02:21:33 GMT
>> Server: Apache/2.2.15 (Red Hat)
>> X-Powered-By: PHP/5.3.3
>> Set-Cookie: 1a3c31c9847a772452af472ce0afd5f3=5hcm2m506se424huah4eo5lvo7; path=/
>> P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"
>> Cache-Control: no-cache
>> Pragma: no-cache
>> Connection: close
>> Content-Type: text/html; charset=utf-8
>> 
>> Connection closed by foreign host.
>> 
>> 
>> 
>>  ~# 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
>> From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=5
>> Destination unreachable: Administratively prohibited
>> From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=6
>> Destination unreachable: Administratively prohibited
>> From te-4-1-ur01.newcastlerdc.de.panjde.comcast.net icmp_seq=7
>> Destination unreachable: Administratively prohibited
>> 
>> --- comcast6.net ping statistics ---
>> 8 packets transmitted, 0 received, +8 errors, 100% packet loss, time 6999ms
> 
> 
> 
> 
> End of NANOG Digest, Vol 54, Issue 3
> ************************************





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