Hello, all, PS print a line as below: 318 ? S 0:00 /sbin/dhclient-2.2.x -q eth0 I've referred to man page of dhclient, see no argument of 'q', however. What does it affect after all? Second, where or how to check if the lease of DHCP expires? I know "ipconfig /all" can do this under Windows. Thanks! Kevin Wang