On xp, ifDisableDHCPMediaSenseis set to1 (true), I unplug the NIC cable, the routing table would remain the same before and after.On vista (and server 2008), I do the same thing but the entries for this networking adapter interface would disappear from the routing table.It seems to me that windows still could detect the disconnection and update the routing table.What else could I do to keep the routing table the same even the cable is unplugged on vista or server 2008?BTW 10.4.0.6 is the static IP ofthe NIC interface.C:\Users\xxx>netsh interface ipv4 showQuerying active state... General Global Parameters---------------------------------------------Default Hop Limit : 128 hopsNeighbor Cache Limit : 256 entrRoute Cache Limit : 128 entrReassembly Limit : 16489536ICMP Redirects : enabledSource Routing Behavior : forwardTask Offload : enabledDhcp Media Sense : disabled <-------------------Media Sense Logging : enabledMLD Level : allMLD Version : version3Multicast Forwarding : disabledGroup Forwarded Fragments : disabledRandomize Identifiers : enabledAddress Mask Reply : disabled Current Global Statistics---------------------------------------------Number of Compartments : 1Number of NL clients : 5Number of FL providers : 4before:C:\Users\xxx>route print===========================================================================Interface List11 ...00 10 18 3a 8b ec ...... Broadcom NetXtreme Gigabit Ethernet10 ...00 23 ae 6a 03 90 ...... Intel(R) 82566DM-2 Gigabit Network Connectio 1 ........................... Software Loopback Interface 1=========================================================================== IPv4 Route Table===========================================================================Active Routes:Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 155.177.16.1 155.177.16.85 20 10.4.0.0 255.254.0.0 On-link 10.4.0.6 276 <---- will disappear 10.4.0.6 255.255.255.255 On-link 10.4.0.6 276 <---- will disappear 10.5.255.255 255.255.255.255 On-link 10.4.0.6 276 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 155.177.16.0 255.255.255.0 On-link 155.177.16.85 276 155.177.16.85 255.255.255.255 On-link 155.177.16.85 276 155.177.16.255 255.255.255.255 On-link 155.177.16.85 276 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 10.4.0.6 276 224.0.0.0 240.0.0.0 On-link 155.177.16.85 276 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 10.4.0.6 276 255.255.255.255 255.255.255.255 On-link 155.177.16.85 276===========================================================================Persistent Routes: None IPv6 Route Table===========================================================================Active Routes:If Metric Network Destination Gateway 1 306 ::1/128 On-link 1 306 ff00::/8 On-link===========================================================================Persistent Routes: NoneAfter:C:\Users\xxx>route print===========================================================================Interface List11 ...00 10 18 3a 8b ec ...... Broadcom NetXtreme Gigabit Ethernet10 ...00 23 ae 6a 03 90 ...... Intel(R) 82566DM-2 Gigabit Network Connectio 1 ........................... Software Loopback Interface 1=========================================================================== IPv4 Route Table===========================================================================Active Routes:Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 155.177.16.1 155.177.16.85 20 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 155.177.16.0 255.255.255.0 On-link 155.177.16.85 276 155.177.16.85 255.255.255.255 On-link 155.177.16.85 276 155.177.16.255 255.255.255.255 On-link 155.177.16.85 276 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 155.177.16.85 276 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 155.177.16.85 276===========================================================================Persistent Routes: None IPv6 Route Table===========================================================================Active Routes:If Metric Network Destination Gateway 1 306 ::1/128 On-link 1 306 ff00::/8 On-link===========================================================================Persistent Routes: NoneThanks.