In the simple trace formula of Deligne Kazhdan one assumes that the test function is supported at the elliptic regular elements at one place and is a supercusp form at another place.  Why can't one just assume that it is supported on elliptic elements (not necessarily regular)?

More specifically, I don't see how the regularity assumption is used in the proofs of the simple trace formula.  I understand that one can get around it using Arthur's work.  


Question: Adding static route through group policy
Answer: According to some documentation I found,


  Routes added by using the -p option are stored in the registry under the following key: 
  
  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip \Parameters\PersistentRoutes


Perhaps you could just use Group Policy Preferences to set the appropriate entries directly in the registry?