This week I noticed some issues with DirectAccess on my Windows 7 client. For some strange reason both Infrastructure and Intranet tunnels are not established. When walking through the Advanced Firewall configuration I noticed that Internet Protocol security (IPsec) tunnel mode security associations (SAs) were not initiated. After some searching if found a post on Forefront forum which describes more or less the same behavior.
Thanks to Jason Jones if found my issue. By verifying the Name Resolution Policy Table (NRPT) configuration using netsh dnsclient show state and noticed that Direct Access Settings is misconfigured. The NRPT is configured using the DirectAccess Setup wizard. You can configure the rules also directly by yourself but take into account these settings are overridden when running the DirectAccess wizard!