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

[Brandon Applegate]

On Wed, 17 Aug 2011, Daniel Roesen wrote:

> Hi,
>
> anybody responsible for IPv6 on www.citrix.com listening, or able to put
> me in touch with the right persons?
>
> It seems to run off AT&T IPv6 address space, but no proper assignment in
> ARIN whoisdb.
>
> Looks like www.citrix.com has MTU problems... I fail to browse the page
> from my dualstacked home site here. Anybody else able to replicate
> problem?

I am not able to replicate.  I tried it from:

- Google Chrome - using socks5 proxy box in the datacenter which has 
native v6.

- Firefox - no proxy - dualstacked on my Mac (10.7).  Since 10.7 does 
happy eyeballs, I put the v6 IP for www.citrix.com in to make sure. 
Loaded fine, I navigated around to some product links etc.

FWIW - The second test above (home) is fed via a v6inv4 linux tunnel which 
runs over a v4 openvpn tunnel.  I'm running ip6tables on my firewall and 
am allowing icmp6.

I will dig around with some more diag tools later to see if I can manually 
see an MTU issue from home.

--
Brandon Applegate - CCIE 10273
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