[outages] CloudFlare - ipv6 issues ?

[Graham Beneke]

Curl works for me too but trying to actually load the page in firefox on
ubuntu just gets stuck endlessly loading.

Just had a colleague complaing of similar problems with opening another
cloudflare hosted site: http://www.mikogo.com/

It kinda feels like an MTU issue though.

1400 byte packets make it:

 8  xe-2-3-0.cr1.ams2.nl.nlayer.net (2001:590::4516:8e0e)  201.968 ms
189.039 ms  200.609 ms
 9  ae1-20g.ar1.ams3.nl.nlayer.net (2001:590::4516:8b3d)  191.834 ms
191.97 ms  189.011 ms
10  as13335.xe-3-0-2.ar1.ams3.nl.nlayer.net (2001:590::3f8d:df1e)
220.754 ms  220.786 ms  220.778 ms
11  2400:cb00:2048:1::8d65:7fda (2400:cb00:2048:1::8d65:7fda)  212.063
ms  210.701 ms  210.638 ms

while 1500 byte packets don't:

 8  xe-2-3-0.cr1.ams2.nl.nlayer.net (2001:590::4516:8e0e)  188.975 ms
205.167 ms  190.259 ms
 9  ae1-20g.ar1.ams3.nl.nlayer.net (2001:590::4516:8b3d)  200.561 ms
190.452 ms  194.873 ms
10  as13335.xe-3-0-2.ar1.ams3.nl.nlayer.net (2001:590::3f8d:df1e)
232.169 ms  222.212 ms  222.093 ms
11  * * *



On 11/06/2013 15:23, Frank Bulk (iname.com) wrote:
> Works for me:
> 
> nagios:/home/fbulk# curl -I -6 http://en.bitcoin.it/
> HTTP/1.1 302 Found
> Server: cloudflare-nginx
> Date: Tue, 11 Jun 2013 13:22:18 GMT
> Content-Type: text/html
> Connection: keep-alive
> X-Powered-By: PHP/5.3.13
> Location: /wiki/
> Set-Cookie: __cfduid=d5570c9c80966d1ed7ba8772d6c9e76ba1370956938;
> expires=Mon, 23-Dec-2019 23:50:00 GMT; path=/; domain=.bitcoin.it
> CF-RAY: 7ce9c01572901ee
> 
> nagios:/home/fbulk#
> 
> Frank
> 
> -----Original Message-----
> From: Outages [mailto:outages-bounces at outages.org] On Behalf Of Brandon
> Applegate
> Sent: Tuesday, June 11, 2013 7:50 AM
> To: outages at outages.org
> Subject: [outages] CloudFlare - ipv6 issues ?
> 
> Affected sites seem to have been fine ~ 12 hours ago.  Noticed page 
> loading issues this AM (I'm in EST).  I notice these issues more because 
> my version of squid seems to not fallback to ipv4 if ipv6 is unreachable.
> 
> bapplegate at phosphor:~$ host en.bitcoin.it
> en.bitcoin.it is an alias for cf-ssl27811-protected-en.bitcoin.it.
> cf-ssl27811-protected-en.bitcoin.it has address 141.101.127.218
> cf-ssl27811-protected-en.bitcoin.it has address 108.162.200.219
> cf-ssl27811-protected-en.bitcoin.it has IPv6 address
> 2400:cb00:2048:1::8d65:7fda
> cf-ssl27811-protected-en.bitcoin.it has IPv6 address
> 2400:cb00:2048:1::6ca2:c8db
> 
> bapplegate at phosphor:~$ curl -I -4 http://en.bitcoin.it/
> HTTP/1.1 302 Found
> Server: cloudflare-nginx
> Date: Tue, 11 Jun 2013 12:41:46 GMT
> Content-Type: text/html
> Connection: keep-alive
> X-Powered-By: PHP/5.3.13
> Location: /wiki/
> Set-Cookie: __cfduid=d53afc7455f2f3b1730d9e695b4aba0921370954505; 
> expires=Mon, 23-Dec-2019 23:50:00 GMT; path=/; domain=.bitcoin.it
> CF-RAY: 7ce609e639f0436
> 
> bapplegate at phosphor:~$ curl -I -6 http://en.bitcoin.it/
> curl: (7) couldn't connect to host
> 
> Other v6 seems to be working fine from my network:
> 
> bapplegate at phosphor:~$ curl -I -6 http://www.google.com
> HTTP/1.1 200 OK
> Date: Tue, 11 Jun 2013 12:44:48 GMT
> Expires: -1
> Cache-Control: private, max-age=0
> Content-Type: text/html; charset=ISO-8859-1
> Set-Cookie: 
> PREF=ID=962ff74f01950819:FF=0:TM=1370954688:LM=1370954688:S=1kW4WbpuUSXf9sqv
> ; 
> expires=Thu, 11-Jun-2015 12:44:48 GMT; path=/; domain=.google.com
> Set-Cookie: 
> NID=67=tQ-Lk7-QdXd4jPhTqGw5vSEuwknGV-I-IbEcn8tm_8TM9sZA530i3kCy4rfZVbB-birw-
> ajlM8LE2A8nA3IBnceC4FfdlSuxuu6T3bDauYFktTamAn4cKnmxmtPbt8vM; 
> expires=Wed, 11-Dec-2013 12:44:48 GMT; path=/; domain=.google.com; 
> HttpOnly
> P3P: CP="This is not a P3P policy! See 
> http://www.google.com/support/accounts/bin/answer.py?hl=en&answer=151657 
> for more info."
> Server: gws
> X-XSS-Protection: 1; mode=block
> X-Frame-Options: SAMEORIGIN
> Transfer-Encoding: chunked
> 
> --
> Brandon Applegate - CCIE 10273
> PGP Key fingerprint:
> 8779 B023 7637 CEC8 C5C6 4052 664D 7E08 3CBB 1739
> "SH1-0151.  This is the serial number, of our orbital gun."
> 
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-- 
Graham Beneke
Network Engineer      | Neology (PTY) Ltd.
graham at neology.co.za  | http://www.neology.co.za/
Dir: +27-10-500-5906  | Suite 301, Block C, Eva Park
Tel: +27-11-476-1933  | Cresta, Johannesburg
Skype: grbeneke       | Jabber: graham at neology.co.za