For those who are watching the happenings in Microsoft's DirectAccess solution the most interesting news as of late is from the Forefront Unified Access Gateway product group. They announced at the end of last month the availability of a UAG DirectAccess solution.
I participated in one of the Microsoft MVP LiveMeeting session on it and I think the most compelling part of using UAG for DirectAccess is the easy of provisioning the solution. They have a nice wizard driven deployment set up which I think will make getting DirectAccess up and going much easier. The nice part is that they handle setting up the NAT-PT (NAT64) and other transition tunneling needed to get the solution up and working.
I downloaded the beta and will be trying it out next week at our office. We just finished rolling out native IPv6, IPv6 routing and even got IPv6 working over Cisco DMVPN. We have Windows Server 2008, Windows 7, Ubuntu 8.10 and 9.04 all working on IPv6 and we even have our Cisco Communication Manager and IP handsets working on IPv6 now.
With the addition of the UAG DirectAccess we will have a complete solution that also integrates Microsoft OCS and MOC with our Cisco Unified Communications infrastructure. Pretty cool stuff.