Specifies the dynamic tunnel endpoints (DTEs) of the IPsec tunnels that enable DirectAccess. It is through these tunnels that the DCA attempts to access the resources that are specified in the CorporateResources setting. By default, the DCA uses the same DirectAccess server that the DirectAccess client computer connection is using. In default configurations of DirectAccess, there are typically two DTEs, one for the infrastructure tunnel, and one for the user tunnel. You should configure one DTE for each tunnel.
Each entry consists of the text PING: followed by the IPv6 address, for example: PING:2001:3039::0001.