Hi I have setup an IPv6 environment using 2 servers as routers 1 DNS server and 2 XP clients. Router 1 has ISATAP enabled and when I reboot router 1 the ISATAP address does not advertise accross a reboot. If I do a route print comand I still can see the route and by using NETSH I can get it to advertise. Not sure why this is hapening, it should advertise accross reboots. Here is my setup at the following link: http://technet.microsoft.com/en-us/library/cc775579.aspx I have done this numerous times and can't figure it out, any help would be greatly appreciated. Thanks Antman1

Hi Antman, Please understand that we mainly discuss Exchange issues in this forum, in order to get a prompt and exact answer, I suggest writing a post on the Windows Server forums: http://social.technet.microsoft.com/forums/en-US/winservergen/threads/ Thanks, Elvis