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Author Topic: A few v6 capable sites suddenly unreachable.  (Read 5554 times)

mindlesstux

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A few v6 capable sites suddenly unreachable.
« on: June 23, 2012, 08:30:03 AM »

Has something happened to the ash1 tunnel server or further upstream somewhere?

Yesterday about 4:30~pm EDT both my office and home connections fail to load facebook and various other sites with ipv6 support.  Chrome reports "Error 7 (net::ERR_TIMED_OUT): The operation timed out." Google ipv6 sites still load.  If I disable the ipv6 address on the inside interface on the router ipv4 takes over and all is fine.


With ipv6 enabled internally you can see the trace makes it past the he.net network yet the trace does not complete.
bdavenport@CAG:~$ traceroute6 2a03:2880:10:8f01:face:b00c:0:25
traceroute to 2a03:2880:10:8f01:face:b00c:0:25 (2a03:2880:10:8f01:face:b00c:0:25) from 2001:470:8:303:213:2ff:fe5b:6fe2, 30 hops max, 16 byte packets
 1  2001:470:8:303::1 (2001:470:8:303::1)  0.872 ms  0.643 ms  0.578 ms
 2  mindlesstux-1.tunnel.tserv13.ash1.ipv6.he.net (2001:470:7:303::1)  43.391 ms  44.233 ms  44.851 ms
 3  gige-g4-12.core1.ash1.he.net (2001:470:0:90::1)  43.744 ms  43.985 ms  48.98 ms
 4  facebook-as32934.10gigabitethernet6.switch3.ash1.he.net (2001:470:0:1bf::2)  43.505 ms  42.891 ms  43.788 ms
 5  ae2.bb01.iad1.tfbnw.net (2620:0:1cff:dead:beef::79)  41.694 ms  42.845 ms  41.963 ms
 6  ae7.bb03.prn1.tfbnw.net (2620:0:1cff:dead:beef::11e)  130.356 ms  131.884 ms  137.51 ms
 7  2620:0:1cff:dead:beef::13 (2620:0:1cff:dead:beef::13)  132.455 ms  133.015 ms  131.215 ms
 8  2620:0:1cff:dead:beee::13f (2620:0:1cff:dead:beee::13f)  134.872 ms  135.752 ms  135.211 ms
 9  * * *
10  * * *
11  * * *
12  * * *


Ping reaches though.
bdavenport@CAG:~$ ping6 -c 4 2a03:2880:10:8f01:face:b00c:0:25
PING 2a03:2880:10:8f01:face:b00c:0:25(2a03:2880:10:8f01:face:b00c:0:25) 56 data bytes
64 bytes from 2a03:2880:10:8f01:face:b00c:0:25: icmp_seq=1 ttl=50 time=134 ms
64 bytes from 2a03:2880:10:8f01:face:b00c:0:25: icmp_seq=2 ttl=50 time=135 ms
64 bytes from 2a03:2880:10:8f01:face:b00c:0:25: icmp_seq=3 ttl=50 time=134 ms
64 bytes from 2a03:2880:10:8f01:face:b00c:0:25: icmp_seq=4 ttl=50 time=134 ms

--- 2a03:2880:10:8f01:face:b00c:0:25 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 134.703/134.909/135.341/0.450 ms


Attached is a image from my routers gui on the trace to the same IP, as you can see it completes.  But the issue from what I can tell is beyond the he.net network.  Any ideas as to what the issue is and possible fix?
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MikkelBohn

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Re: A few v6 capable sites suddenly unreachable.
« Reply #1 on: June 23, 2012, 11:57:22 AM »

I'm seeing the same issue with the same symptoms through ash1.
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jtcloe

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Re: A few v6 capable sites suddenly unreachable.
« Reply #2 on: June 23, 2012, 01:02:54 PM »

bdavenport@CAG:~$ traceroute6 2a03:2880:10:8f01:face:b00c:0:25

 8  2620:0:1cff:dead:beee::13f (2620:0:1cff:dead:beee::13f)  134.872 ms  135.752 ms  135.211 ms
 9  * * *


etwork.  Any ideas as to what the issue is and possible fix?
That IP is a FB IP, right?

It appears that is the final hop right after 2620:0:1cff:dead:beee::13f.  So this to me appears to be a firewall issue or something along those lines at the far end (FB).

I can MTR to it just fine:

mtr -r -c 5 -n 2a03:2880:10:8f01:face:b00c:0:25
HOST: lnxjerry                    Loss%   Snt   Last   Avg  Best  Wrst StDev
  1.|-- 2001:470:xxxx:xxxx::1       0.0%     5    0.4   0.5   0.4   0.6   0.1
  2.|-- 2001:470:xxxx:xxxx::1       0.0%     5   32.3  32.0  31.1  32.7   0.7
  3.|-- 2001:470:0:6e::1           0.0%     5   28.6  29.4  27.9  30.6   1.1
  4.|-- 2001:504:0:4:0:3:2934:1    0.0%     5   61.5  54.5  51.7  61.5   4.0
  5.|-- 2620:0:1cff:dead:beef::23  0.0%     5   77.4  72.0  64.7  86.6   9.8
  6.|-- 2620:0:1cff:dead:beee::10  0.0%     5   87.6  85.7  83.6  87.6   1.5
  7.|-- 2620:0:1cff:dead:beef::e6  0.0%     5   99.2 102.1  99.2 105.0   2.1
  8.|-- 2620:0:1cff:dead:beef::b   0.0%     5  104.1 104.6 103.4 106.1   1.3
  9.|-- 2620:0:1cff:dead:beee::13  0.0%     5  109.0 104.2 102.3 109.0   2.8
 10.|-- 2a03:2880:10:8f01:face:b0 20.0%     5  100.6 102.1 100.6 103.9   1.6
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MikkelBohn

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Re: A few v6 capable sites suddenly unreachable.
« Reply #3 on: June 23, 2012, 01:37:21 PM »

I'm also seeing this issue on Netflix.
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mindlesstux

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Re: A few v6 capable sites suddenly unreachable.
« Reply #4 on: June 23, 2012, 05:14:12 PM »

Also seeing it on att "home page".  In the office a few users reported their bank sites not working.
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gawamakito

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Re: A few v6 capable sites suddenly unreachable.
« Reply #5 on: June 23, 2012, 09:29:18 PM »

Since Unix-based platforms use UDP as default protocol for traceroute, so some destinations that did not allow UDP port range 33434-33534 will appear to be unreachable within the traceroute.

This is my result from Windows XP, which uses ICMP for traceroute:


C:\>tracert www.facebook.com

Tracing route to www.facebook.com [2a03:2880:10:8f01:face:b00c:0:25]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  gw-r01-pp.kh.v6.tnc92.net [2001:470:19:885:10::1
]
  2    50 ms    50 ms    51 ms  gawamakito-1.tunnel.tserv20.hkg1.ipv6.he.net [20
01:470:18:885::1]
  3    47 ms    47 ms    47 ms  gige-g3-13.core1.hkg1.he.net [2001:470:0:ba::1]

  4   199 ms   196 ms   199 ms  facebook-10G.hkix.net [2001:7fa:0:1::ca28:a16e]

  5   196 ms   196 ms   198 ms  ae23.bb01.sjc1.tfbnw.net [2620:0:1cff:dead:beef:
:479]
  6   218 ms   220 ms   217 ms  ae16.bb01.prn1.tfbnw.net [2620:0:1cff:dead:beef:
:fa]
  7   218 ms   216 ms   217 ms  ae0.dr05.prn1.tfbnw.net [2620:0:1cff:dead:beef::
33]
  8   218 ms   221 ms   218 ms  2620:0:1cff:dead:beee::149
  9   218 ms   216 ms   217 ms  www6-10-08-prn1.facebook.com [2a03:2880:10:8f01:
face:b00c:0:25]

Trace complete.
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broquea

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Re: A few v6 capable sites suddenly unreachable.
« Reply #6 on: June 23, 2012, 09:58:43 PM »

You guys opened up trouble tickets right?
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lcameron

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Re: A few v6 capable sites suddenly unreachable.
« Reply #7 on: June 25, 2012, 11:03:43 AM »

I'm seeing a similar issue as well, Facebook, YouTube, etc...
How do I go about opening a support ticket? (can't find the link for the life of me)
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cholzhauer

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Re: A few v6 capable sites suddenly unreachable.
« Reply #8 on: June 25, 2012, 11:06:41 AM »

email ipv6@he.net
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mindlesstux

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Re: A few v6 capable sites suddenly unreachable.
« Reply #9 on: June 25, 2012, 05:12:39 PM »

My issue cleared late yesterday by the time I checked the thread and saw broquea's question.  It was bit late for me to make a reply the would have made any sense.
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