IPv6 contact for www.citrix.com - MTU problem?

[Daniel Roesen]

Hi,

the issue still persists a full two years later. Wow.

Best regards,
Daniel

On Fri, Aug 19, 2011 at 09:00:44PM -0500, Frank Bulk wrote:
> I found a NOC email account for Citrix and emailed it, and had a response
> from someone at Citrix in 15 minutes who promised to forward it on.
> 
> Frank
> 
> -----Original Message-----
> From: ipv6-ops-bounces+frnkblk=iname.com at lists.cluenet.de
> [mailto:ipv6-ops-bounces+frnkblk=iname.com at lists.cluenet.de] On Behalf Of
> Daniel Roesen
> Sent: Friday, August 19, 2011 3:08 PM
> To: ipv6-ops at lists.cluenet.de
> Subject: Re: IPv6 contact for www.citrix.com - MTU problem?
> 
> Hi,
> 
> On Fri, Aug 19, 2011 at 02:41:38PM -0500, Frank Bulk wrote:
> > Matthew Luckie (who developed the scamper tool) passed this on to me,
> which
> > confirms the www.citrix.com MTU issue:
> > 
> > $ sudo ./scamper -F ipfw -I "tbit -u 
> > 'http://www.citrix.com/lang/English/home.asp' 2001:1890:111e:201::15"
> > tbit from 2001:48d0:101:501::89 to 2001:1890:111e:201::15
> >   server-mss 1360, result: pmtud-fail
> >   app: http, url: http://www.citrix.com/lang/English/home.asp
> >   [  0.050] TX SYN             64  seq = 0:0
> >   [  0.184] RX SYN/ACK         64  seq = 0:1
> >   [  0.184] TX                 60  seq = 1:1
> >   [  0.184] TX                254  seq = 1:1(194)
> >   [  0.328] RX               1420  seq = 1:195(1360)
> >   [  0.328] TX PTB           1280  mtu = 1280
> >   [  0.328] RX               1420  seq = 1361:195(1360)
> >   [  0.328] RX               1420  seq = 2721:195(1360)
> >   [  0.329] RX               1420  seq = 4081:195(1360)
> >   [  1.190] RX               1420  seq = 1:195(1360)
> >   [  1.190] TX PTB           1280  mtu = 1280
> >   [  2.901] RX               1420  seq = 1:195(1360)
> >   [  2.901] TX PTB           1280  mtu = 1280
> >   [  6.521] RX               1420  seq = 1:195(1360)
> >   [  6.521] TX PTB           1280  mtu = 1280
> >   [ 13.764] RX               1420  seq = 1:195(1360)
> > 
> > You can see that Matthew's server issue a PTB to the citrix server, but it
> > continued to send back 1420 byte packets.
> 
> Nice. And of course no reaction to my notice via the web form yet
> (I haven't found an email address to mail to).
> 
> So, anybody got IPv6 contacts at AT&T? After all, www.citrix.com is
> using (unassigned) AT&T address space...
> 
> Best regards,
> Daniel
> 
> -- 
> CLUE-RIPE -- Jabber: dr at cluenet.de -- dr at IRCnet -- PGP: 0xA85C8AA0

-- 
CLUE-RIPE -- Jabber: dr at cluenet.de -- dr at IRCnet -- PGP: 0xA85C8AA0