NSLOOKUP.EXE, delivered in WR08620, may get deleted by TCPSTART.CMD. Some versions of TCP/IP may delete NSLOOKUP.EXE located in the \mptn\bin directory after TCPSTART.CMD is run, usually at reboot. The following workaround may be used to avoid the problem. REM out the call to TCPCOEX in the TCPSTART.CMD before rebooting the system after installation of WRx8620 for example: REM X:\TCPIP\BIN\TCPCOEX.EXE