Youtube CDN unreachable over IPv6

Thu Jan 14 15:04:54 UTC 2016

Op 6-11-2015 om 19:17 schreef Christopher Schmidt via NANOG:
> Hi all,
> 
> Thanks for the reports.
> 
> To the best of our knowledge, this issue has been resolved at this
> time. If you are still having problems connecting to YouTube CDN
> nodes, please feel free to let me know, and I will investigate
> further.

It's here again since this tuesday.

lsintra:~# host r2---sn-8xgn5uxa-i5he.googlevideo.com
r2---sn-8xgn5uxa-i5he.googlevideo.com is an alias for
r2.sn-8xgn5uxa-i5he.googlevideo.com.
r2.sn-8xgn5uxa-i5he.googlevideo.com has address 62.214.62.205
r2.sn-8xgn5uxa-i5he.googlevideo.com has IPv6 address 2001:1438:1:2::d
lsintra:~# telnet 62.214.62.205 443
Trying 62.214.62.205...
Connected to cache.google.com (62.214.62.205).
Escape character is '^]'.
^]
telnet> quit
Connection closed.
lsintra:~# telnet 2001:1438:1:2::d 443
Trying 2001:1438:1:2::d...
^]quit
^]^[^]^C
lsintra:~#

Is it possible for Google to realize some form of internal monitoring to
catch these defunct dual stack nodes?

Kind regards,

Seth

> On Fri, Nov 6, 2015 at 12:48 PM, Blair Trosper <blair.trosper at gmail.com> wrote:
>> This was happening two weeks ago in the Bay Area as well.  It happens quite
>> a lot, actually...search for my old threads.  I gave up trying to get it
>> noticed.
> 
> Blair,
> 
> I'm not aware of a similar issue with IPv6 being unavailable while
> IPv4 is available recently.
> 
> I did not see any threads with information in them with the name
> "Blair" attached in either the October archive
> (http://mailman.nanog.org/pipermail/nanog/2015-October/thread.html) or
> the September archive
> (http://mailman.nanog.org/pipermail/nanog/2015-September/thread.html)
> .
> 
> If this issue is ongoing, I would be happy to look into this;
> otherwise, I don't believe there is any action I can take to assist at
> this time.
> 
> All the best.
> 
> 
>>> * seth.mos at dds.nl (Seth Mos) [Fri 06 Nov 2015, 09:00 CET]:
>>>> Dear Google,
>>>>
>>>> It appears that one of the Youtube CDN's (in Europe, NL) is not
>>>> reachable over IPv6 from AS 20844. Can someone get back to us on this,
>>>> the company can't access any of the videos currently, although the
>>>> mainpage loads fine (over IPv6).
>>>>
>>>> Kind regards,
>>>>
>>>> Seth
>>>>
>>>> telnet r6---sn-5hne6n76.googlevideo.com 443
>>>> Trying 2a00:1450:401c:4::b...
>>>> telnet: connect to address 2a00:1450:401c:4::b: Connection timed out
>>>> Trying 74.125.100.203...
>>>> Connected to r6.sn-5hne6n76.googlevideo.com (74.125.100.203).
>>>> Escape character is '^]'.
>>>> Connection closed by foreign host.
>>>>
>>>> telnet www.youtube.com 443
>>>> Trying 2a00:1450:4013:c01::5d...
>>>> Connected to youtube-ui.l.google.com (2a00:1450:4013:c01::5d).
>>>> Escape character is '^]'.
>>>> Connection closed by foreign host.
>>>
> 