For those who missed the latest news on UAG, Microsoft released UAG SP2 early this month. For what is new in Microsoft UAG SP2 please check the following link:

http://technet.microsoft.com/library/jj590875

http://support.microsoft.com/kb/2710791

To Download Microsoft UAG SP2, please follow this link:

http://www.microsoft.com/en-us/download/details.aspx?id=30459

Everything went fine while downloading and updating UAG server with the latest SP2, After reboot i noticed that the DNS64 shows Not healthy under the DirectAccess Monitor/Current Status. This is the same behavior that i faced while installing update 1 Rollup 1 early this year and the workaround to fix it was to disable/enable Direct Access from the UAG 2010 console. For detailed steps please check my earlier link:

http://itcalls.blogspot.com/2012/01/dns64-unhealthy-after-applying-uag-sp1.html