They are probably referring to this: http://support.microsoft.com/kb/2533454/ "The following Fix it solution will resolve the issue by configuring your computer to prefer IPv4, instead of IPv6. By default, Windows prefers IPv6 over IPv4. This Fix it solution is temporary, to resolve issues on World IPv6 Day for affected Internet users. On June 10, 2011 at 12:00AM, your computer will be configured to prefer IPv6 again after your next reboot." --h -----Original Message----- From: Joly MacFie [mailto:joly@punkcast.com] Sent: Thursday, June 09, 2011 3:03 PM To: Wes Hardaker Cc: nanog Subject: Re: IPv6 day non-participants Someone has told me that Microsoft "switched off IPv6" for the day. Is that true? To what extent? j -- --------------------------------------------------------------- Joly MacFie 218 565 9365 Skype:punkcast WWWhatsup NYC - http://wwwhatsup.com http://pinstand.com - http://punkcast.com VP (Admin) - ISOC-NY - http://isoc-ny.org -------------------------------------------------------------- -