Configure Windows 2008 L4 DSR 

How to configure Loopback Adapter

Weak Host Model

http://technet.microsoft.com/en-us/magazine/2007.09.cableguy.aspx
http://technet.microsoft.com/ko-kr/library/bb878108(en-us).aspx

Name of Interface : service
Loopback Interface :  loopback

netsh interface ipv4 set interface "service" weakhostreceive=enabled
netsh interface ipv4 set interface "loopback" weakhostreceive=enabled
netsh interface ipv4 set interface "loopback" weakhostsend=enabled

loopback :  set metric with 254, in order to not respond ARP.

netsh interface ipv4 set interface "loopback" metric=254